mirror of
https://github.com/angristan/openvpn-install.git
synced 2025-07-04 05:24:21 +02:00
merged from master
This commit is contained in:
xiagw
parent
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769
edit-in-master.sh
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edit-in-master.sh
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#!/bin/bash
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# Secure OpenVPN server installer for Debian, Ubuntu, CentOS and Arch Linux
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# https://github.com/Angristan/OpenVPN-install
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if [[ "$EUID" -ne 0 ]]; then
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echo "Sorry, you need to run this as root"
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exit 1
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fi
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if [[ ! -e /dev/net/tun ]]; then
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echo "TUN is not available"
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exit 2
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fi
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if grep -qs "CentOS release 5" "/etc/redhat-release"; then
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echo "CentOS 5 is too old and not supported"
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exit 3
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fi
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## Global variables
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dir_openvpn='/etc/openvpn'
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dir_easy="${dir_openvpn}/easy-rsa"
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dir_pki="${dir_easy}/pki"
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bin_easy="${dir_easy}/easyrsa"
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conf_client_tpl="${dir_openvpn}/client-template.txt"
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conf_server="${dir_openvpn}/server.conf"
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conf_iptables='/etc/sysconfig/iptables.rules'
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## function: config the firewall
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set_firewall(){
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# Create the sysctl configuration file if needed (mainly for Arch Linux)
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if [[ ! -e $SYSCTL ]]; then
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touch $SYSCTL
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fi
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# Enable net.ipv4.ip_forward for the system
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sed -i '/\<net.ipv4.ip_forward\>/c\net.ipv4.ip_forward=1' $SYSCTL
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if ! grep -q "\<net.ipv4.ip_forward\>" $SYSCTL; then
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echo 'net.ipv4.ip_forward=1' >> $SYSCTL
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fi
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# Avoid an unneeded reboot
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echo 1 > /proc/sys/net/ipv4/ip_forward
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# Set NAT for the VPN subnet
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iptables -t nat -A POSTROUTING -o $NIC -s 10.8.0.0/24 -j MASQUERADE
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# Save persitent iptables rules
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iptables-save > $conf_iptables
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if pgrep firewalld; then
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# We don't use --add-service=openvpn because that would only work with
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# the default port. Using both permanent and not permanent rules to
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# avoid a firewalld reload.
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firewall-cmd --zone=public --add-port=$PORT/${PROTOCOL}
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firewall-cmd --permanent --zone=public --add-port=$PORT/${PROTOCOL}
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firewall-cmd --zone=trusted --add-source=10.8.0.0/24
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firewall-cmd --permanent --zone=trusted --add-source=10.8.0.0/24
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fi
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if iptables -L -n | grep -qE 'REJECT|DROP'; then
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# If iptables has at least one REJECT rule, we asume this is needed.
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# Not the best approach but I can't think of other and this shouldn't
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# cause problems.
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iptables -I INPUT -p ${PROTOCOL} --dport $PORT -j ACCEPT
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iptables -I FORWARD -s 10.8.0.0/24 -j ACCEPT
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iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
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# Save persitent OpenVPN rules
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iptables-save > $conf_iptables
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fi
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# If SELinux is enabled and a custom port was selected, we need this
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if hash sestatus 2>/dev/null; then
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if sestatus | grep "Current mode" | grep -qs "enforcing"; then
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if [[ "$PORT" != '1194' ]]; then
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# semanage isn't available in CentOS 6 by default
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if ! hash semanage 2>/dev/null; then
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yum install policycoreutils-python -y
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fi
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semanage port -a -t openvpn_port_t -p ${PROTOCOL} $PORT
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fi
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fi
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fi
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}
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## function: generate the new client??.ovpn
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generate_newclient() {
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echo ""
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echo "Tell me a name for the client cert"
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echo "Please, use one word only, no special characters"
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echo "Here are the files that already exist,do not repeat that"
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tail -n +2 ${file_index} | grep "^V" | cut -d '=' -f 2 | nl -s ') '
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read -p "Client name: " -e -i client CLIENT
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cd ${dir_easy}
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${bin_easy} build-client-full $CLIENT nopass
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# Generates the custom client.ovpn
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# Where to write the custom client.ovpn?
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if [ -e /home/$CLIENT ]; then # if $CLIENT is a user name
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homeDir="/home/$CLIENT"
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elif [ ${SUDO_USER} ]; then # if not, use SUDO_USER
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homeDir="/home/${SUDO_USER}"
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else # if not SUDO_USER, use /root
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homeDir="${dir_openvpn}"
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fi
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# Generates the custom client.ovpn
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file_client="$homeDir/$CLIENT.ovpn"
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cp ${conf_client_tpl} ${file_client}
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echo "<ca>" >> ${file_client}
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cat ${dir_pki}/ca.crt >> ${file_client}
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echo "</ca>" >> ${file_client}
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echo "<cert>" >> ${file_client}
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cat ${dir_pki}/issued/$CLIENT.crt >> ${file_client}
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echo "</cert>" >> ${file_client}
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echo "<key>" >> ${file_client}
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cat ${dir_pki}/private/$CLIENT.key >> ${file_client}
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echo "</key>" >> ${file_client}
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echo "key-direction 1" >> ${file_client}
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echo "<tls-auth>" >> ${file_client}
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cat ${dir_openvpn}/tls-auth.key >> ${file_client}
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echo "</tls-auth>" >> ${file_client}
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echo ""
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echo "Client $CLIENT added, certs available at $homeDir/$CLIENT.ovpn"
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}
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## function: revoke a exist client??.ovpn
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revoke_openvpn_client(){
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NUMBEROFCLIENTS=$(tail -n +2 ${file_index} | grep -c "^V")
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if [[ "$NUMBEROFCLIENTS" = '0' ]]; then
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echo ""
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echo "You have no existing clients!"
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exit 5
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fi
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echo ""
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echo "Select the existing client certificate you want to revoke"
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tail -n +2 ${file_index} | grep "^V" | cut -d '=' -f 2 | nl -s ') '
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if [[ "$NUMBEROFCLIENTS" = '1' ]]; then
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read -p "Select one client [1]: " CLIENTNUMBER
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else
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read -p "Select one client [1-$NUMBEROFCLIENTS]: " CLIENTNUMBER
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fi
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CLIENT=$(tail -n +2 ${file_index} | grep "^V" | cut -d '=' -f 2 | sed -n "${CLIENTNUMBER:?empty-var}"p)
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cd ${dir_easy}
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${bin_easy} --batch revoke $CLIENT
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EASYRSA_CRL_DAYS=3650 ${bin_easy} gen-crl
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rm -f ${dir_pki}/reqs/$CLIENT.req ${dir_pki}/private/$CLIENT.key ${dir_pki}/issued/$CLIENT.crt
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#rm -f ${dir_openvpn}/crl.pem
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/bin/cp -f ${dir_pki}/crl.pem ${dir_openvpn}/crl.pem
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chmod 644 ${dir_openvpn}/crl.pem
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echo ""
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echo "Certificate for client $CLIENT revoked"
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echo "Exiting..."
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}
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## function: install easyrsa 3.0.3
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install_easyrsa(){
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# An old version of easy-rsa was available by default in some openvpn packages
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rm -rf ${dir_easy}
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mkdir -p ${dir_easy}
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# Get easy-rsa
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url_easy='https://github.com/OpenVPN/easy-rsa/releases/download/v3.0.3/EasyRSA-3.0.3.tgz'
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file_easy=${url_easy##*/}
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wget -c -O ~/${file_easy} ${url_easy}
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tar xzf ~/${file_easy} -C ~/
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mv ~/${file_easy%.tgz}/* ${dir_easy}/
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chown -R root:root ${dir_easy}/
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rm -rf ~/${file_easy}
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}
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## function: install iptables for debian
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systemd_ipt_service(){
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dir_ipt='/etc/iptables'
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file_ipt_svc='/etc/systemd/system/iptables.service'
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file_ipt_sh="${dir_ipt}/flush-iptables.sh"
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# Install iptables service
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if [[ ! -e ${file_ipt_svc} ]]; then
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mkdir ${dir_ipt}
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iptables-save > ${conf_iptables}
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echo "#!/bin/sh
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iptables -F
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iptables -X
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iptables -t nat -F
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iptables -t nat -X
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iptables -t mangle -F
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iptables -t mangle -X
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iptables -P INPUT ACCEPT
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iptables -P FORWARD ACCEPT
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iptables -P OUTPUT ACCEPT" > ${file_ipt_sh}
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chmod +x ${file_ipt_sh}
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echo "[Unit]
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Description=Packet Filtering Framework
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DefaultDependencies=no
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Before=network-pre.target
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Wants=network-pre.target
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[Service]
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Type=oneshot
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ExecStart=/sbin/iptables-restore ${conf_iptables}
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ExecReload=/sbin/iptables-restore ${conf_iptables}
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ExecStop=/etc/iptables/flush-iptables.sh
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RemainAfterExit=yes
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[Install]
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WantedBy=multi-user.target" > ${file_ipt_svc}
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systemctl daemon-reload
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systemctl enable iptables.service
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if [[ "$OS" = 'centos7' || "$OS" = 'fedora' ]]; then
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# Disable firewalld to allow iptables to start upon reboot
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systemctl disable firewalld
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systemctl mask firewalld
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fi
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fi
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}
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##
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config_iptables(){
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echo "Please manually set the firewall"
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read -p "press any key continue..."
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}
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##
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config_firewalld(){
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echo "Please manually set the firewall"
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read -p "press any key continue..."
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}
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## function: install openvpn server
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install_openvpn(){
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clear
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cat <<EOF
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Welcome to the secure OpenVPN installer (github.com/Angristan/OpenVPN-install)
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I need to ask you a few questions before starting the setup
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You can leave the default options and just press enter if you are ok with them
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"
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I need to know the IPv4 address of the network interface you want OpenVPN listening to.
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If your server is running behind a NAT, (e.g. LowEndSpirit, Scaleway) leave the IP address as it is. (local/private IP)
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Otherwise, it should be your public IPv4 address.
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EOF
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read -p "IP address: " -e -i $IP IP
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echo ""
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echo "What port do you want for OpenVPN?"
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read -p "Port: " -e -i 1194 PORT
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echo ""
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echo "1/6.What protocol do you want for OpenVPN?"
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echo "Unless UDP is blocked, you should not use TCP (unnecessarily slower)"
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while [[ $PROTOCOL != "udp" && $PROTOCOL != "tcp" ]]; do
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read -p "Protocol [udp/tcp]: " -e -i udp PROTOCOL
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done
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cat <<EOF
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2/6.What DNS do you want to use with the VPN?
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1) Current system resolvers (from /etc/resolv.conf)
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2) Quad9 (Anycast: worldwide)
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3) FDN (France)
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4) DNS.WATCH (Germany)
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5) OpenDNS (Anycast: worldwide)
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6) Google (Anycast: worldwide)
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7) Yandex Basic (Russia)
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8) AdGuard DNS (Russia)
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EOF
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while [[ $DNS != [1-8] ]]; do
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read -p "DNS [1-8]: " -e -i 1 DNS
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done
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cat <<EOF
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See https://github.com/Angristan/OpenVPN-install#encryption to learn more about
|
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the encryption in OpenVPN and the choices I made in this script.
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Please note that all the choices proposed are secure (to a different degree)
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and are still viable to date, unlike some default OpenVPN options
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3/6.Choose which cipher you want to use for the data channel:
|
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1) AES-128-CBC (fastest and sufficiently secure for everyone, recommended)
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2) AES-192-CBC
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3) AES-256-CBC
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Alternatives to AES, use them only if you know what you're doing.
|
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They are relatively slower but as secure as AES.
|
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4) CAMELLIA-128-CBC
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5) CAMELLIA-192-CBC
|
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6) CAMELLIA-256-CBC
|
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7) SEED-CBC
|
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EOF
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while [[ $CIPHER != [1-7] ]]; do
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read -p "Cipher [1-7]: " -e -i 1 CIPHER
|
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done
|
||||
case $CIPHER in
|
||||
1)
|
||||
CIPHER="cipher AES-128-CBC"
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;;
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2)
|
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CIPHER="cipher AES-192-CBC"
|
||||
;;
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3)
|
||||
CIPHER="cipher AES-256-CBC"
|
||||
;;
|
||||
4)
|
||||
CIPHER="cipher CAMELLIA-128-CBC"
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||||
;;
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5)
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||||
CIPHER="cipher CAMELLIA-192-CBC"
|
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;;
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6)
|
||||
CIPHER="cipher CAMELLIA-256-CBC"
|
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;;
|
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7)
|
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CIPHER="cipher SEED-CBC"
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;;
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esac
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echo ""
|
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echo "4/6.Choose what size of Diffie-Hellman key you want to use:"
|
||||
echo " 1) 2048 bits (fastest)"
|
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echo " 2) 3072 bits (recommended, best compromise)"
|
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echo " 3) 4096 bits (most secure)"
|
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while [[ $DH_KEY_SIZE != [1-3] ]]; do
|
||||
read -p "DH key size [1-3]: " -e -i 2 DH_KEY_SIZE
|
||||
done
|
||||
case $DH_KEY_SIZE in
|
||||
1)
|
||||
DH_KEY_SIZE="2048"
|
||||
;;
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||||
2)
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DH_KEY_SIZE="3072"
|
||||
;;
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3)
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||||
DH_KEY_SIZE="4096"
|
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;;
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esac
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echo ""
|
||||
echo "5/6.Choose what size of RSA key you want to use:"
|
||||
echo " 1) 2048 bits (fastest)"
|
||||
echo " 2) 3072 bits (recommended, best compromise)"
|
||||
echo " 3) 4096 bits (most secure)"
|
||||
while [[ $RSA_KEY_SIZE != [1-3] ]]; do
|
||||
read -p "RSA key size [1-3]: " -e -i 2 RSA_KEY_SIZE
|
||||
done
|
||||
case $RSA_KEY_SIZE in
|
||||
1)
|
||||
RSA_KEY_SIZE="2048"
|
||||
;;
|
||||
2)
|
||||
RSA_KEY_SIZE="3072"
|
||||
;;
|
||||
3)
|
||||
RSA_KEY_SIZE="4096"
|
||||
;;
|
||||
esac
|
||||
|
||||
echo ""
|
||||
echo "6/6.Finally, tell me a name for the client certificate and configuration"
|
||||
while [[ $CLIENT = "" ]]; do
|
||||
echo "Please, use one word only, no special characters"
|
||||
read -p "Client name: " -e -i client CLIENT
|
||||
done
|
||||
|
||||
echo ""
|
||||
echo "Okay, that was all I needed. We are ready to setup your OpenVPN server now"
|
||||
read -n1 -r -p "Press any key to continue..."
|
||||
|
||||
if [[ "$OS" = 'debian' ]]; then
|
||||
apt-get install ca-certificates -y
|
||||
# We add the OpenVPN repo to get the latest version.
|
||||
case $VERSION_ID in
|
||||
'7') # Debian 7
|
||||
echo "deb http://build.openvpn.net/debian/openvpn/stable wheezy main" > /etc/apt/sources.list.d/openvpn.list
|
||||
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
|
||||
apt-get update
|
||||
;;
|
||||
'8') # Debian 8
|
||||
echo "deb http://build.openvpn.net/debian/openvpn/stable jessie main" > /etc/apt/sources.list.d/openvpn.list
|
||||
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
|
||||
apt update
|
||||
;;
|
||||
'12.04') # Ubuntu 12.04
|
||||
echo "deb http://build.openvpn.net/debian/openvpn/stable precise main" > /etc/apt/sources.list.d/openvpn.list
|
||||
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
|
||||
apt-get update
|
||||
;;
|
||||
'14.04') # Ubuntu 14.04
|
||||
echo "deb http://build.openvpn.net/debian/openvpn/stable trusty main" > /etc/apt/sources.list.d/openvpn.list
|
||||
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
|
||||
apt-get update
|
||||
esac
|
||||
# Ubuntu >= 16.04 and Debian > 8 have OpenVPN > 2.3.3 without the need of a third party repository.
|
||||
## The we install OpenVPN
|
||||
apt-get install openvpn iptables openssl wget ca-certificates curl -y
|
||||
systemd_ipt_service ## call function
|
||||
elif [[ "$OS" = 'centos6' || "$OS" = 'centos7' || "$OS" = 'fedora' ]]; then
|
||||
if [[ "$OS" != 'fedora' ]]; then
|
||||
yum install epel-release -y
|
||||
fi
|
||||
yum --enablerepo=epel install openvpn iptables openssl wget ca-certificates curl -y
|
||||
if [[ "$OS" = 'centos6' ]]; then
|
||||
config_iptables ## call function
|
||||
else
|
||||
config_firewalld ## call function
|
||||
fi
|
||||
else
|
||||
# Else, the distro is ArchLinux
|
||||
echo ""
|
||||
echo ""
|
||||
echo "As you're using ArchLinux, I need to update the packages on your system to install those I need."
|
||||
echo "Not doing that could cause problems between dependencies, or missing files in repositories."
|
||||
echo ""
|
||||
echo "Continuing will update your installed packages and install needed ones."
|
||||
while [[ $CONTINUE != [yn] ]]; do
|
||||
read -p "Continue ? [y/n]: " -e -i y CONTINUE
|
||||
done
|
||||
if [[ "$CONTINUE" = "n" ]]; then
|
||||
echo "Ok, bye !"
|
||||
exit 4
|
||||
fi
|
||||
|
||||
if [[ "$OS" = 'arch' ]]; then
|
||||
# Install dependencies
|
||||
pacman -Syu openvpn iptables openssl wget ca-certificates curl --needed --noconfirm
|
||||
iptables-save > ${conf_iptables} # iptables won't start if this file does not exist
|
||||
systemctl daemon-reload
|
||||
systemctl enable iptables
|
||||
systemctl start iptables
|
||||
fi
|
||||
fi
|
||||
|
||||
|
||||
# Find out if the machine uses nogroup or nobody for the permissionless group
|
||||
if grep -qs "^nogroup:" /etc/group; then
|
||||
NOGROUP=nogroup
|
||||
else
|
||||
NOGROUP=nobody
|
||||
fi
|
||||
|
||||
install_easyrsa ## call function
|
||||
|
||||
cd ${dir_easy}/
|
||||
echo "set_var EASYRSA_KEY_SIZE $RSA_KEY_SIZE" > vars
|
||||
# Create the PKI, set up the CA, the DH params and the server + client certificates
|
||||
${dir_easy}/easyrsa init-pki
|
||||
${dir_easy}/easyrsa --batch build-ca nopass
|
||||
openssl dhparam -out dh.pem $DH_KEY_SIZE
|
||||
${dir_easy}/easyrsa build-server-full server nopass
|
||||
${dir_easy}/easyrsa build-client-full $CLIENT nopass
|
||||
EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
|
||||
## generate tls-auth key
|
||||
openvpn --genkey --secret ${dir_openvpn}/tls-auth.key
|
||||
## Move all the generated files
|
||||
cp ${dir_pki}/ca.crt ${dir_pki}/private/ca.key dh.pem ${dir_pki}/issued/server.crt ${dir_pki}/private/server.key ${dir_pki}/crl.pem ${dir_openvpn}/
|
||||
## Make cert revocation list readable for non-root
|
||||
chmod 644 ${dir_openvpn}/crl.pem
|
||||
|
||||
## Generate server.conf
|
||||
echo "port $PORT
|
||||
proto ${PROTOCOL}
|
||||
dev tun
|
||||
user nobody
|
||||
group $NOGROUP
|
||||
persist-key
|
||||
persist-tun
|
||||
keepalive 10 120
|
||||
topology subnet
|
||||
server 10.8.0.0 255.255.255.0
|
||||
ifconfig-pool-persist ipp.txt
|
||||
#client-config-dir ccd
|
||||
#route 10.8.0.0 255.255.255.252" >> ${conf_server}
|
||||
# DNS resolvers
|
||||
case $DNS in
|
||||
1)
|
||||
# Obtain the resolvers from resolv.conf and use them for OpenVPN
|
||||
grep -v '#' /etc/resolv.conf | grep 'nameserver' | grep -E -o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | while read line; do
|
||||
echo "push \"dhcp-option DNS $line\""
|
||||
done
|
||||
;;
|
||||
2) #Quad9
|
||||
echo 'push "dhcp-option DNS 9.9.9.9"'
|
||||
;;
|
||||
3) #FDN
|
||||
echo 'push "dhcp-option DNS 80.67.169.12"'
|
||||
echo 'push "dhcp-option DNS 80.67.169.40"'
|
||||
;;
|
||||
4) #DNS.WATCH
|
||||
echo 'push "dhcp-option DNS 84.200.69.80"'
|
||||
echo 'push "dhcp-option DNS 84.200.70.40"'
|
||||
;;
|
||||
5) #OpenDNS
|
||||
echo 'push "dhcp-option DNS 208.67.222.222"'
|
||||
echo 'push "dhcp-option DNS 208.67.220.220"'
|
||||
;;
|
||||
6) #Google
|
||||
echo 'push "dhcp-option DNS 8.8.8.8"'
|
||||
echo 'push "dhcp-option DNS 8.8.4.4"'
|
||||
;;
|
||||
7) #Yandex Basic
|
||||
echo 'push "dhcp-option DNS 77.88.8.8"'
|
||||
echo 'push "dhcp-option DNS 77.88.8.1"'
|
||||
;;
|
||||
8) #AdGuard DNS
|
||||
echo 'push "dhcp-option DNS 176.103.130.130"'
|
||||
echo 'push "dhcp-option DNS 176.103.130.131"'
|
||||
;;
|
||||
esac >> ${conf_server}
|
||||
echo 'push "redirect-gateway def1 bypass-dhcp" '>> ${conf_server}
|
||||
echo "client-to-client
|
||||
crl-verify crl.pem
|
||||
ca ca.crt
|
||||
cert server.crt
|
||||
key server.key
|
||||
tls-auth tls-auth.key 0
|
||||
dh dh.pem
|
||||
auth SHA256
|
||||
$CIPHER
|
||||
tls-server
|
||||
tls-version-min 1.2
|
||||
tls-cipher TLS-DHE-RSA-WITH-AES-128-GCM-SHA256
|
||||
status openvpn-status.log
|
||||
log openvpn.log
|
||||
log-append openvpn.log
|
||||
verb 3" >> ${conf_server}
|
||||
|
||||
set_firewall ## call function
|
||||
|
||||
# And finally, restart OpenVPN
|
||||
if [[ "$OS" = 'debian' ]]; then
|
||||
# Little hack to check for systemd
|
||||
if pgrep systemd-journal; then
|
||||
#Workaround to fix OpenVPN service on OpenVZ
|
||||
sed -i 's|LimitNPROC|#LimitNPROC|' /lib/systemd/system/openvpn\@.service
|
||||
sed -i 's|/etc/openvpn/server|/etc/openvpn|' /lib/systemd/system/openvpn\@.service
|
||||
sed -i 's|%i.conf|server.conf|' /lib/systemd/system/openvpn\@.service
|
||||
systemctl daemon-reload
|
||||
systemctl restart openvpn
|
||||
systemctl enable openvpn
|
||||
else
|
||||
/etc/init.d/openvpn restart
|
||||
fi
|
||||
else
|
||||
if pgrep systemd-journal; then
|
||||
if [[ "$OS" = 'arch' || "$OS" = 'fedora' ]]; then
|
||||
#Workaround to avoid rewriting the entire script for Arch & Fedora
|
||||
sed -i 's|/etc/openvpn/server|/etc/openvpn|' /usr/lib/systemd/system/openvpn-server@.service
|
||||
sed -i 's|%i.conf|server.conf|' /usr/lib/systemd/system/openvpn-server@.service
|
||||
systemctl daemon-reload
|
||||
systemctl restart openvpn-server@openvpn.service
|
||||
systemctl enable openvpn-server@openvpn.service
|
||||
else
|
||||
systemctl restart openvpn@server.service
|
||||
systemctl enable openvpn@server.service
|
||||
fi
|
||||
else
|
||||
service openvpn restart
|
||||
chkconfig openvpn on
|
||||
fi
|
||||
fi
|
||||
|
||||
# Try to detect a NATed connection and ask about it to potential LowEndSpirit/Scaleway users
|
||||
EXTERNALIP=$(wget -qO- ipv4.icanhazip.com)
|
||||
if [[ "$IP" != "$EXTERNALIP" ]]; then
|
||||
echo ""
|
||||
echo "Looks like your server is behind a NAT!"
|
||||
echo ""
|
||||
echo "If your server is NATed (e.g. LowEndSpirit, Scaleway, or behind a router),"
|
||||
echo "then I need to know the address that can be used to access it from outside."
|
||||
echo "If that's not the case, just ignore this and leave the next field blank"
|
||||
read -p "External IP or domain name: " -e USEREXTERNALIP
|
||||
if [[ "$USEREXTERNALIP" != "" ]]; then
|
||||
IP=$USEREXTERNALIP
|
||||
fi
|
||||
fi
|
||||
|
||||
# client-template.txt is created so we have a template to add further users later
|
||||
echo "client" > ${conf_client_tpl}
|
||||
if [[ "$PROTOCOL" = 'udp' ]]; then
|
||||
echo "proto ${PROTOCOL}" >> ${conf_client_tpl}
|
||||
elif [[ "$PROTOCOL" = 'tcp' ]]; then
|
||||
echo "proto ${PROTOCOL}-client" >> ${conf_client_tpl}
|
||||
fi
|
||||
echo "remote $IP $PORT
|
||||
dev tun
|
||||
resolv-retry infinite
|
||||
nobind
|
||||
persist-key
|
||||
persist-tun
|
||||
remote-cert-tls server
|
||||
auth SHA256
|
||||
auth-nocache
|
||||
$CIPHER
|
||||
tls-client
|
||||
tls-version-min 1.2
|
||||
tls-cipher TLS-DHE-RSA-WITH-AES-128-GCM-SHA256
|
||||
setenv opt block-outside-dns
|
||||
verb 3" >> ${conf_client_tpl}
|
||||
|
||||
# call function Generate the custom client.ovpn
|
||||
generate_newclient "$CLIENT"
|
||||
echo ""
|
||||
echo "Finished!"
|
||||
echo ""
|
||||
echo "Your client config is available at $homeDir/$CLIENT.ovpn"
|
||||
echo "If you want to add more clients, you simply need to run this script again!"
|
||||
}
|
||||
|
||||
## function: remove openvpn server and config dir
|
||||
remove_openvpn(){
|
||||
|
||||
echo ""
|
||||
read -p "Do you really want to remove OpenVPN? [y/n]: " -e -i n REMOVE
|
||||
if [[ 'y' = "$REMOVE" ]]; then
|
||||
PORT=$(grep '^port ' ${conf_server} | cut -d " " -f 2)
|
||||
PROTOCOL=$(grep '^proto ' ${conf_server} | cut -d " " -f 2)
|
||||
if pgrep firewalld; then
|
||||
# Using both permanent and not permanent rules to avoid a firewalld reload.
|
||||
firewall-cmd --zone=public --remove-port=$PORT/${PROTOCOL}
|
||||
firewall-cmd --zone=trusted --remove-source=10.8.0.0/24
|
||||
firewall-cmd --permanent --zone=public --remove-port=$PORT/${PROTOCOL}
|
||||
firewall-cmd --permanent --zone=trusted --remove-source=10.8.0.0/24
|
||||
fi
|
||||
if iptables -L -n | grep -qE 'REJECT|DROP'; then
|
||||
iptables -D INPUT -p ${PROTOCOL} --dport $PORT -j ACCEPT
|
||||
iptables -D FORWARD -s 10.8.0.0/24 -j ACCEPT
|
||||
iptables-save > $conf_iptables
|
||||
fi
|
||||
iptables -t nat -D POSTROUTING -o $NIC -s 10.8.0.0/24 -j MASQUERADE
|
||||
iptables-save > $conf_iptables
|
||||
if hash sestatus 2>/dev/null; then
|
||||
if sestatus | grep "Current mode" | grep -qs "enforcing"; then
|
||||
if [[ "$PORT" != '1194' ]]; then
|
||||
semanage port -d -t openvpn_port_t -p ${PROTOCOL} $PORT
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
if [[ "$OS" = 'debian' ]]; then
|
||||
apt-get autoremove --purge -y openvpn
|
||||
elif [[ "$OS" = 'arch' ]]; then
|
||||
pacman -R openvpn --noconfirm
|
||||
else
|
||||
yum remove openvpn -y
|
||||
fi
|
||||
rm -rf ${dir_openvpn} /usr/share/doc/openvpn*
|
||||
echo ""
|
||||
echo "OpenVPN removed!"
|
||||
else
|
||||
echo ""
|
||||
echo "Removal aborted!"
|
||||
fi
|
||||
}
|
||||
|
||||
config_openvpn_server(){
|
||||
:
|
||||
}
|
||||
|
||||
config_openvpn_client(){
|
||||
:
|
||||
}
|
||||
|
||||
config_openvpn(){
|
||||
|
||||
while :
|
||||
do
|
||||
clear
|
||||
cat <<EOF
|
||||
OpenVPN-install (github.com/xiagw/OpenVPN-install)
|
||||
|
||||
Looks like OpenVPN is already installed
|
||||
|
||||
What do you want to do?
|
||||
1) Add a cert for a new user
|
||||
2) Revoke existing user cert
|
||||
3) Remove OpenVPN
|
||||
4) Exit
|
||||
EOF
|
||||
file_index="${dir_pki}/index.txt"
|
||||
read -p 'Select an option [1-4]: ' option
|
||||
case $option in
|
||||
1)
|
||||
generate_newclient
|
||||
exit
|
||||
;;
|
||||
2)
|
||||
revoke_openvpn_client
|
||||
exit
|
||||
;;
|
||||
3)
|
||||
remove_openvpn ## call function
|
||||
exit
|
||||
;;
|
||||
4) exit;;
|
||||
esac
|
||||
done
|
||||
|
||||
}
|
||||
|
||||
## function: determine the operating system version
|
||||
detect_os_ver(){
|
||||
|
||||
if [[ -e /etc/debian_version ]]; then
|
||||
OS="debian"
|
||||
# Getting the version number, to verify that a recent version of OpenVPN is available
|
||||
# VERSION_ID=$(grep "VERSION_ID" /etc/os-release)
|
||||
source /etc/os-release
|
||||
SYSCTL='/etc/sysctl.conf'
|
||||
case "$VERSION_ID" in
|
||||
7|8|9|12.04|14.04|16.04|16.10|17.04)
|
||||
:
|
||||
;;
|
||||
*)
|
||||
echo 'Your version of Debian/Ubuntu is not supported.'
|
||||
echo "I can't install a recent version of OpenVPN on your system."
|
||||
echo ''
|
||||
echo "However, if you're using Debian unstable/testing, or Ubuntu beta,"
|
||||
echo 'then you can continue, a recent version of OpenVPN is available on these.'
|
||||
echo 'Keep in mind they are not supported, though.'
|
||||
while [[ "$CONTINUE" != [yn] ]]; do
|
||||
read -p 'Continue ? [y/n]: ' -e CONTINUE
|
||||
done
|
||||
if [[ 'n' = "$CONTINUE" ]]; then
|
||||
echo 'Ok, bye !'
|
||||
exit 4
|
||||
fi
|
||||
esac
|
||||
# fi
|
||||
elif [[ -e /etc/centos-release || -e /etc/redhat-release && ! -e /etc/fedora-release ]]; then
|
||||
# rpm -q --queryformat '%{VERSION}' centos-release
|
||||
# rpm -q --queryformat '%{RELEASE}' redhat-release-server | awk -F. '{print $1}'
|
||||
# grep -oE '[0-9]+\.[0-9]+' /etc/redhat-release
|
||||
OS="centos$(rpm -q --queryformat '%{VERSION}' centos-release)"
|
||||
SYSCTL='/etc/sysctl.conf'
|
||||
elif [[ -e /etc/arch-release ]]; then
|
||||
OS='arch'
|
||||
SYSCTL='/etc/sysctl.d/openvpn.conf'
|
||||
elif [[ -e /etc/fedora-release ]]; then
|
||||
OS='fedora'
|
||||
SYSCTL='/etc/sysctl.d/openvpn.conf'
|
||||
else
|
||||
echo "Looks like you aren't running this installer on a Debian, Ubuntu, CentOS or ArchLinux system"
|
||||
exit 4
|
||||
fi
|
||||
}
|
||||
|
||||
detect_IP_NIC(){
|
||||
|
||||
# Try to get our IP from the system and fallback to the Internet.
|
||||
# I do this to make the script compatible with NATed servers (LowEndSpirit/Scaleway)
|
||||
# and to avoid getting an IPv6.
|
||||
IP=$(ip addr | grep 'inet' | grep -v inet6 | grep -vE '127\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | grep -o -E '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | head -1)
|
||||
if [[ "$IP" = "" ]]; then
|
||||
IP=$(wget -qO- ipv4.icanhazip.com)
|
||||
fi
|
||||
# Get Internet network interface with default route
|
||||
NIC=$(ip -4 route ls | grep default | grep -Po '(?<=dev )(\S+)' | head -1)
|
||||
}
|
||||
|
||||
################################# main #################################
|
||||
main(){
|
||||
detect_os_ver ## call function
|
||||
detect_IP_NIC ## call function
|
||||
|
||||
## OpenVPN setup and first user creation
|
||||
if [[ -e ${conf_server} ]]; then
|
||||
config_openvpn ## call function
|
||||
else
|
||||
install_openvpn ## call function
|
||||
fi
|
||||
}
|
||||
|
||||
main $@
|
||||
@ -24,9 +24,9 @@ dir_openvpn='/etc/openvpn'
|
||||
dir_easy="${dir_openvpn}/easy-rsa"
|
||||
dir_pki="${dir_easy}/pki"
|
||||
bin_easy="${dir_easy}/easyrsa"
|
||||
file_client_tpl="${dir_openvpn}/client-template.txt"
|
||||
file_openvpn_conf="${dir_openvpn}/server.conf"
|
||||
file_iptables='/etc/sysconfig/iptables.rules'
|
||||
conf_client_tpl="${dir_openvpn}/client-template.txt"
|
||||
conf_server="${dir_openvpn}/server.conf"
|
||||
conf_iptables='/etc/sysconfig/iptables.rules'
|
||||
|
||||
## function: config the firewall
|
||||
set_firewall(){
|
||||
@ -46,7 +46,7 @@ echo 1 > /proc/sys/net/ipv4/ip_forward
|
||||
# Set NAT for the VPN subnet
|
||||
iptables -t nat -A POSTROUTING -o $NIC -s 10.8.0.0/24 -j MASQUERADE
|
||||
# Save persitent iptables rules
|
||||
iptables-save > $file_iptables
|
||||
iptables-save > $conf_iptables
|
||||
if pgrep firewalld; then
|
||||
# We don't use --add-service=openvpn because that would only work with
|
||||
# the default port. Using both permanent and not permanent rules to
|
||||
@ -64,7 +64,7 @@ if iptables -L -n | grep -qE 'REJECT|DROP'; then
|
||||
iptables -I FORWARD -s 10.8.0.0/24 -j ACCEPT
|
||||
iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
|
||||
# Save persitent OpenVPN rules
|
||||
iptables-save > $file_iptables
|
||||
iptables-save > $conf_iptables
|
||||
fi
|
||||
# If SELinux is enabled and a custom port was selected, we need this
|
||||
if hash sestatus 2>/dev/null; then
|
||||
@ -83,42 +83,82 @@ fi
|
||||
## function: generate the new client??.ovpn
|
||||
generate_newclient() {
|
||||
|
||||
echo ""
|
||||
echo "Tell me a name for the client cert"
|
||||
echo "Please, use one word only, no special characters"
|
||||
echo "Here are the files that already exist,do not repeat that"
|
||||
tail -n +2 ${file_index} | grep "^V" | cut -d '=' -f 2 | nl -s ') '
|
||||
read -p "Client name: " -e -i client CLIENT
|
||||
cd ${dir_easy}
|
||||
${bin_easy} build-client-full $CLIENT nopass
|
||||
|
||||
# Generates the custom client.ovpn
|
||||
# Where to write the custom client.ovpn?
|
||||
if [ -e /home/$1 ]; then # if $1 is a user name
|
||||
homeDir="/home/$1"
|
||||
if [ -e /home/$CLIENT ]; then # if $CLIENT is a user name
|
||||
homeDir="/home/$CLIENT"
|
||||
elif [ ${SUDO_USER} ]; then # if not, use SUDO_USER
|
||||
homeDir="/home/${SUDO_USER}"
|
||||
else # if not SUDO_USER, use /root
|
||||
homeDir="${dir_openvpn}"
|
||||
fi
|
||||
# Generates the custom client.ovpn
|
||||
file_client="$homeDir/$1.ovpn"
|
||||
cp ${file_client_tpl} ${file_client}
|
||||
file_client="$homeDir/$CLIENT.ovpn"
|
||||
cp ${conf_client_tpl} ${file_client}
|
||||
echo "<ca>" >> ${file_client}
|
||||
cat ${dir_pki}/ca.crt >> ${file_client}
|
||||
echo "</ca>" >> ${file_client}
|
||||
echo "<cert>" >> ${file_client}
|
||||
cat ${dir_pki}/issued/$1.crt >> ${file_client}
|
||||
cat ${dir_pki}/issued/$CLIENT.crt >> ${file_client}
|
||||
echo "</cert>" >> ${file_client}
|
||||
echo "<key>" >> ${file_client}
|
||||
cat ${dir_pki}/private/$1.key >> ${file_client}
|
||||
cat ${dir_pki}/private/$CLIENT.key >> ${file_client}
|
||||
echo "</key>" >> ${file_client}
|
||||
echo "key-direction 1" >> ${file_client}
|
||||
echo "<tls-auth>" >> ${file_client}
|
||||
cat ${dir_openvpn}/tls-auth.key >> ${file_client}
|
||||
echo "</tls-auth>" >> ${file_client}
|
||||
|
||||
echo ""
|
||||
echo "Client $CLIENT added, certs available at $homeDir/$CLIENT.ovpn"
|
||||
|
||||
}
|
||||
|
||||
## function: revoke a exist client??.ovpn
|
||||
revoke_openvpn_client(){
|
||||
|
||||
NUMBEROFCLIENTS=$(tail -n +2 ${file_index} | grep -c "^V")
|
||||
if [[ "$NUMBEROFCLIENTS" = '0' ]]; then
|
||||
echo ""
|
||||
echo "You have no existing clients!"
|
||||
exit 5
|
||||
fi
|
||||
echo ""
|
||||
echo "Select the existing client certificate you want to revoke"
|
||||
tail -n +2 ${file_index} | grep "^V" | cut -d '=' -f 2 | nl -s ') '
|
||||
if [[ "$NUMBEROFCLIENTS" = '1' ]]; then
|
||||
read -p "Select one client [1]: " CLIENTNUMBER
|
||||
else
|
||||
read -p "Select one client [1-$NUMBEROFCLIENTS]: " CLIENTNUMBER
|
||||
fi
|
||||
CLIENT=$(tail -n +2 ${file_index} | grep "^V" | cut -d '=' -f 2 | sed -n "${CLIENTNUMBER:?empty-var}"p)
|
||||
cd ${dir_easy}
|
||||
${bin_easy} --batch revoke $CLIENT
|
||||
EASYRSA_CRL_DAYS=3650 ${bin_easy} gen-crl
|
||||
rm -f ${dir_pki}/reqs/$CLIENT.req ${dir_pki}/private/$CLIENT.key ${dir_pki}/issued/$CLIENT.crt
|
||||
#rm -f ${dir_openvpn}/crl.pem
|
||||
/bin/cp -f ${dir_pki}/crl.pem ${dir_openvpn}/crl.pem
|
||||
chmod 644 ${dir_openvpn}/crl.pem
|
||||
echo ""
|
||||
echo "Certificate for client $CLIENT revoked"
|
||||
echo "Exiting..."
|
||||
}
|
||||
|
||||
## function: install easyrsa 3.0.3
|
||||
install_easyrsa(){
|
||||
|
||||
# An old version of easy-rsa was available by default in some openvpn packages
|
||||
if [[ -d ${dir_easy}/ ]]; then
|
||||
rm -rf ${dir_easy}/
|
||||
rm -rf ${dir_easy}
|
||||
mkdir -p ${dir_easy}
|
||||
else
|
||||
mkdir -p ${dir_easy}
|
||||
fi
|
||||
# Get easy-rsa
|
||||
url_easy='https://github.com/OpenVPN/easy-rsa/releases/download/v3.0.3/EasyRSA-3.0.3.tgz'
|
||||
file_easy=${url_easy##*/}
|
||||
@ -130,7 +170,7 @@ rm -rf ~/${file_easy}
|
||||
}
|
||||
|
||||
## function: install iptables for debian
|
||||
install_ipt_service(){
|
||||
systemd_ipt_service(){
|
||||
|
||||
dir_ipt='/etc/iptables'
|
||||
file_ipt_svc='/etc/systemd/system/iptables.service'
|
||||
@ -138,7 +178,7 @@ file_ipt_sh="${dir_ipt}/flush-iptables.sh"
|
||||
# Install iptables service
|
||||
if [[ ! -e ${file_ipt_svc} ]]; then
|
||||
mkdir ${dir_ipt}
|
||||
iptables-save > ${file_iptables}
|
||||
iptables-save > ${conf_iptables}
|
||||
echo "#!/bin/sh
|
||||
iptables -F
|
||||
iptables -X
|
||||
@ -157,8 +197,8 @@ Before=network-pre.target
|
||||
Wants=network-pre.target
|
||||
[Service]
|
||||
Type=oneshot
|
||||
ExecStart=/sbin/iptables-restore ${file_iptables}
|
||||
ExecReload=/sbin/iptables-restore ${file_iptables}
|
||||
ExecStart=/sbin/iptables-restore ${conf_iptables}
|
||||
ExecReload=/sbin/iptables-restore ${conf_iptables}
|
||||
ExecStop=/etc/iptables/flush-iptables.sh
|
||||
RemainAfterExit=yes
|
||||
[Install]
|
||||
@ -173,6 +213,19 @@ WantedBy=multi-user.target" > ${file_ipt_svc}
|
||||
fi
|
||||
}
|
||||
|
||||
##
|
||||
config_iptables(){
|
||||
echo "Please manually set the firewall"
|
||||
read -p "press any key continue..."
|
||||
}
|
||||
|
||||
##
|
||||
config_firewalld(){
|
||||
echo "Please manually set the firewall"
|
||||
read -p "press any key continue..."
|
||||
}
|
||||
|
||||
|
||||
## function: install openvpn server
|
||||
install_openvpn(){
|
||||
|
||||
@ -337,19 +390,17 @@ if [[ "$OS" = 'debian' ]]; then
|
||||
# Ubuntu >= 16.04 and Debian > 8 have OpenVPN > 2.3.3 without the need of a third party repository.
|
||||
## The we install OpenVPN
|
||||
apt-get install openvpn iptables openssl wget ca-certificates curl -y
|
||||
install_ipt_service ## call function
|
||||
elif [[ "$OS" = 'centos7' || "$OS" = 'fedora' ]]; then
|
||||
if [[ "$OS" = 'centos7' ]]; then
|
||||
systemd_ipt_service ## call function
|
||||
elif [[ "$OS" = 'centos6' || "$OS" = 'centos7' || "$OS" = 'fedora' ]]; then
|
||||
if [[ "$OS" != 'fedora' ]]; then
|
||||
yum install epel-release -y
|
||||
fi
|
||||
yum --enablerepo=epel install openvpn iptables openssl wget ca-certificates curl -y
|
||||
# install_ipt_service ## call function
|
||||
read -p "Please manually set the firewall,press anykey continue"
|
||||
elif [[ "$OS" = 'centos6' ]]; then
|
||||
yum install epel-release -y
|
||||
yum --enablerepo=epel install openvpn iptables openssl wget ca-certificates curl -y
|
||||
# install_ipt_service ## call function
|
||||
read -p "Please manually set the firewall,press anykey continue"
|
||||
if [[ "$OS" = 'centos6' ]]; then
|
||||
config_iptables ## call function
|
||||
else
|
||||
config_firewalld ## call function
|
||||
fi
|
||||
else
|
||||
# Else, the distro is ArchLinux
|
||||
echo ""
|
||||
@ -369,13 +420,14 @@ else
|
||||
if [[ "$OS" = 'arch' ]]; then
|
||||
# Install dependencies
|
||||
pacman -Syu openvpn iptables openssl wget ca-certificates curl --needed --noconfirm
|
||||
iptables-save > ${file_iptables} # iptables won't start if this file does not exist
|
||||
iptables-save > ${conf_iptables} # iptables won't start if this file does not exist
|
||||
systemctl daemon-reload
|
||||
systemctl enable iptables
|
||||
systemctl start iptables
|
||||
fi
|
||||
fi
|
||||
|
||||
|
||||
# Find out if the machine uses nogroup or nobody for the permissionless group
|
||||
if grep -qs "^nogroup:" /etc/group; then
|
||||
NOGROUP=nogroup
|
||||
@ -414,7 +466,7 @@ topology subnet
|
||||
server 10.8.0.0 255.255.255.0
|
||||
ifconfig-pool-persist ipp.txt
|
||||
#client-config-dir ccd
|
||||
#route 10.8.0.0 255.255.255.252" >> ${file_openvpn_conf}
|
||||
#route 10.8.0.0 255.255.255.252" >> ${conf_server}
|
||||
# DNS resolvers
|
||||
case $DNS in
|
||||
1)
|
||||
@ -450,8 +502,8 @@ case $DNS in
|
||||
echo 'push "dhcp-option DNS 176.103.130.130"'
|
||||
echo 'push "dhcp-option DNS 176.103.130.131"'
|
||||
;;
|
||||
esac >> ${file_openvpn_conf}
|
||||
echo 'push "redirect-gateway def1 bypass-dhcp" '>> ${file_openvpn_conf}
|
||||
esac >> ${conf_server}
|
||||
echo 'push "redirect-gateway def1 bypass-dhcp" '>> ${conf_server}
|
||||
echo "client-to-client
|
||||
crl-verify crl.pem
|
||||
ca ca.crt
|
||||
@ -467,7 +519,7 @@ tls-cipher TLS-DHE-RSA-WITH-AES-128-GCM-SHA256
|
||||
status openvpn-status.log
|
||||
log openvpn.log
|
||||
log-append openvpn.log
|
||||
verb 3" >> ${file_openvpn_conf}
|
||||
verb 3" >> ${conf_server}
|
||||
|
||||
set_firewall ## call function
|
||||
|
||||
@ -520,11 +572,11 @@ if [[ "$IP" != "$EXTERNALIP" ]]; then
|
||||
fi
|
||||
|
||||
# client-template.txt is created so we have a template to add further users later
|
||||
echo "client" > ${file_client_tpl}
|
||||
echo "client" > ${conf_client_tpl}
|
||||
if [[ "$PROTOCOL" = 'udp' ]]; then
|
||||
echo "proto ${PROTOCOL}" >> ${file_client_tpl}
|
||||
echo "proto ${PROTOCOL}" >> ${conf_client_tpl}
|
||||
elif [[ "$PROTOCOL" = 'tcp' ]]; then
|
||||
echo "proto ${PROTOCOL}-client" >> ${file_client_tpl}
|
||||
echo "proto ${PROTOCOL}-client" >> ${conf_client_tpl}
|
||||
fi
|
||||
echo "remote $IP $PORT
|
||||
dev tun
|
||||
@ -540,7 +592,7 @@ tls-client
|
||||
tls-version-min 1.2
|
||||
tls-cipher TLS-DHE-RSA-WITH-AES-128-GCM-SHA256
|
||||
setenv opt block-outside-dns
|
||||
verb 3" >> ${file_client_tpl}
|
||||
verb 3" >> ${conf_client_tpl}
|
||||
|
||||
# call function Generate the custom client.ovpn
|
||||
generate_newclient "$CLIENT"
|
||||
@ -557,8 +609,8 @@ remove_openvpn(){
|
||||
echo ""
|
||||
read -p "Do you really want to remove OpenVPN? [y/n]: " -e -i n REMOVE
|
||||
if [[ 'y' = "$REMOVE" ]]; then
|
||||
PORT=$(grep '^port ' ${file_openvpn_conf} | cut -d " " -f 2)
|
||||
PROTOCOL=$(grep '^proto ' ${file_openvpn_conf} | cut -d " " -f 2)
|
||||
PORT=$(grep '^port ' ${conf_server} | cut -d " " -f 2)
|
||||
PROTOCOL=$(grep '^proto ' ${conf_server} | cut -d " " -f 2)
|
||||
if pgrep firewalld; then
|
||||
# Using both permanent and not permanent rules to avoid a firewalld reload.
|
||||
firewall-cmd --zone=public --remove-port=$PORT/${PROTOCOL}
|
||||
@ -569,10 +621,10 @@ if [[ 'y' = "$REMOVE" ]]; then
|
||||
if iptables -L -n | grep -qE 'REJECT|DROP'; then
|
||||
iptables -D INPUT -p ${PROTOCOL} --dport $PORT -j ACCEPT
|
||||
iptables -D FORWARD -s 10.8.0.0/24 -j ACCEPT
|
||||
iptables-save > $file_iptables
|
||||
iptables-save > $conf_iptables
|
||||
fi
|
||||
iptables -t nat -D POSTROUTING -o $NIC -s 10.8.0.0/24 -j MASQUERADE
|
||||
iptables-save > $file_iptables
|
||||
iptables-save > $conf_iptables
|
||||
if hash sestatus 2>/dev/null; then
|
||||
if sestatus | grep "Current mode" | grep -qs "enforcing"; then
|
||||
if [[ "$PORT" != '1194' ]]; then
|
||||
@ -596,6 +648,13 @@ else
|
||||
fi
|
||||
}
|
||||
|
||||
config_openvpn_server(){
|
||||
:
|
||||
}
|
||||
|
||||
config_openvpn_client(){
|
||||
:
|
||||
}
|
||||
|
||||
config_openvpn(){
|
||||
|
||||
@ -603,7 +662,7 @@ while :
|
||||
do
|
||||
clear
|
||||
cat <<EOF
|
||||
OpenVPN-install (github.com/Angristan/OpenVPN-install)
|
||||
OpenVPN-install (github.com/xiagw/OpenVPN-install)
|
||||
|
||||
Looks like OpenVPN is already installed
|
||||
|
||||
@ -617,46 +676,11 @@ EOF
|
||||
read -p 'Select an option [1-4]: ' option
|
||||
case $option in
|
||||
1)
|
||||
echo ""
|
||||
echo "Tell me a name for the client cert"
|
||||
echo "Please, use one word only, no special characters"
|
||||
echo "Here are the files that already exist,do not repeat that"
|
||||
tail -n +2 ${file_index} | grep "^V" | cut -d '=' -f 2 | nl -s ') '
|
||||
read -p "Client name: " -e -i client CLIENT
|
||||
cd ${dir_easy}
|
||||
${bin_easy} build-client-full $CLIENT nopass
|
||||
# Generates the custom client.ovpn
|
||||
generate_newclient "$CLIENT"
|
||||
echo ""
|
||||
echo "Client $CLIENT added, certs available at $homeDir/$CLIENT.ovpn"
|
||||
generate_newclient
|
||||
exit
|
||||
;;
|
||||
2)
|
||||
NUMBEROFCLIENTS=$(tail -n +2 ${file_index} | grep -c "^V")
|
||||
if [[ "$NUMBEROFCLIENTS" = '0' ]]; then
|
||||
echo ""
|
||||
echo "You have no existing clients!"
|
||||
exit 5
|
||||
fi
|
||||
echo ""
|
||||
echo "Select the existing client certificate you want to revoke"
|
||||
tail -n +2 ${file_index} | grep "^V" | cut -d '=' -f 2 | nl -s ') '
|
||||
if [[ "$NUMBEROFCLIENTS" = '1' ]]; then
|
||||
read -p "Select one client [1]: " CLIENTNUMBER
|
||||
else
|
||||
read -p "Select one client [1-$NUMBEROFCLIENTS]: " CLIENTNUMBER
|
||||
fi
|
||||
CLIENT=$(tail -n +2 ${file_index} | grep "^V" | cut -d '=' -f 2 | sed -n "${CLIENTNUMBER:?empty-var}"p)
|
||||
cd ${dir_easy}
|
||||
${bin_easy} --batch revoke $CLIENT
|
||||
EASYRSA_CRL_DAYS=3650 ${bin_easy} gen-crl
|
||||
rm -f ${dir_pki}/reqs/$CLIENT.req ${dir_pki}/private/$CLIENT.key ${dir_pki}/issued/$CLIENT.crt
|
||||
#rm -f ${dir_openvpn}/crl.pem
|
||||
/bin/cp -f ${dir_pki}/crl.pem ${dir_openvpn}/crl.pem
|
||||
chmod 644 ${dir_openvpn}/crl.pem
|
||||
echo ""
|
||||
echo "Certificate for client $CLIENT revoked"
|
||||
echo "Exiting..."
|
||||
revoke_openvpn_client
|
||||
exit
|
||||
;;
|
||||
3)
|
||||
@ -678,8 +702,6 @@ if [[ -e /etc/debian_version ]]; then
|
||||
# VERSION_ID=$(grep "VERSION_ID" /etc/os-release)
|
||||
source /etc/os-release
|
||||
SYSCTL='/etc/sysctl.conf'
|
||||
# if [[ "$VERSION_ID" != 'VERSION_ID="7"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="8"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="9"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="12.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="14.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="16.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="16.10"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="17.04"' ]]; then
|
||||
# if [[ "$VERSION_ID" != [789] && "$VERSION_ID" != '12.04' && "$VERSION_ID" != '14.04' && "$VERSION_ID" != '16.04' && "$VERSION_ID" != '16.10' && "$VERSION_ID" != '17.04' ]]; then
|
||||
case "$VERSION_ID" in
|
||||
7|8|9|12.04|14.04|16.04|16.10|17.04)
|
||||
:
|
||||
@ -737,7 +759,7 @@ detect_os_ver ## call function
|
||||
detect_IP_NIC ## call function
|
||||
|
||||
## OpenVPN setup and first user creation
|
||||
if [[ -e ${file_openvpn_conf} ]]; then
|
||||
if [[ -e ${conf_server} ]]; then
|
||||
config_openvpn ## call function
|
||||
else
|
||||
install_openvpn ## call function
|
||||
|
||||
693
origin-upstream.sh
Normal file
693
origin-upstream.sh
Normal file
@ -0,0 +1,693 @@
|
||||
#!/bin/bash
|
||||
|
||||
# Secure OpenVPN server installer for Debian, Ubuntu, CentOS and Arch Linux
|
||||
# https://github.com/Angristan/OpenVPN-install
|
||||
|
||||
|
||||
if [[ "$EUID" -ne 0 ]]; then
|
||||
echo "Sorry, you need to run this as root"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [[ ! -e /dev/net/tun ]]; then
|
||||
echo "TUN is not available"
|
||||
exit 2
|
||||
fi
|
||||
|
||||
if grep -qs "CentOS release 5" "/etc/redhat-release"; then
|
||||
echo "CentOS 5 is too old and not supported"
|
||||
exit 3
|
||||
fi
|
||||
|
||||
if [[ -e /etc/debian_version ]]; then
|
||||
OS="debian"
|
||||
# Getting the version number, to verify that a recent version of OpenVPN is available
|
||||
VERSION_ID=$(cat /etc/os-release | grep "VERSION_ID")
|
||||
IPTABLES='/etc/iptables/iptables.rules'
|
||||
SYSCTL='/etc/sysctl.conf'
|
||||
if [[ "$VERSION_ID" != 'VERSION_ID="7"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="8"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="9"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="12.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="14.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="16.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="16.10"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="17.04"' ]]; then
|
||||
echo "Your version of Debian/Ubuntu is not supported."
|
||||
echo "I can't install a recent version of OpenVPN on your system."
|
||||
echo ""
|
||||
echo "However, if you're using Debian unstable/testing, or Ubuntu beta,"
|
||||
echo "then you can continue, a recent version of OpenVPN is available on these."
|
||||
echo "Keep in mind they are not supported, though."
|
||||
while [[ $CONTINUE != "y" && $CONTINUE != "n" ]]; do
|
||||
read -p "Continue ? [y/n]: " -e CONTINUE
|
||||
done
|
||||
if [[ "$CONTINUE" = "n" ]]; then
|
||||
echo "Ok, bye !"
|
||||
exit 4
|
||||
fi
|
||||
fi
|
||||
elif [[ -e /etc/centos-release || -e /etc/redhat-release && ! -e /etc/fedora-release ]]; then
|
||||
OS=centos
|
||||
IPTABLES='/etc/iptables/iptables.rules'
|
||||
SYSCTL='/etc/sysctl.conf'
|
||||
elif [[ -e /etc/arch-release ]]; then
|
||||
OS=arch
|
||||
IPTABLES='/etc/iptables/iptables.rules'
|
||||
SYSCTL='/etc/sysctl.d/openvpn.conf'
|
||||
elif [[ -e /etc/fedora-release ]]; then
|
||||
OS=fedora
|
||||
IPTABLES='/etc/iptables/iptables.rules'
|
||||
SYSCTL='/etc/sysctl.d/openvpn.conf'
|
||||
else
|
||||
echo "Looks like you aren't running this installer on a Debian, Ubuntu, CentOS or ArchLinux system"
|
||||
exit 4
|
||||
fi
|
||||
|
||||
newclient () {
|
||||
# Where to write the custom client.ovpn?
|
||||
if [ -e /home/$1 ]; then # if $1 is a user name
|
||||
homeDir="/home/$1"
|
||||
elif [ ${SUDO_USER} ]; then # if not, use SUDO_USER
|
||||
homeDir="/home/${SUDO_USER}"
|
||||
else # if not SUDO_USER, use /root
|
||||
homeDir="/root"
|
||||
fi
|
||||
# Generates the custom client.ovpn
|
||||
file_client="$homeDir/$1.ovpn"
|
||||
cp ${file_client_tpl} ${file_client}
|
||||
echo "<ca>" >> ${file_client}
|
||||
cat /etc/openvpn/easy-rsa/pki/ca.crt >> ${file_client}
|
||||
echo "</ca>" >> ${file_client}
|
||||
echo "<cert>" >> ${file_client}
|
||||
cat /etc/openvpn/easy-rsa/pki/issued/$1.crt >> ${file_client}
|
||||
echo "</cert>" >> ${file_client}
|
||||
echo "<key>" >> ${file_client}
|
||||
cat /etc/openvpn/easy-rsa/pki/private/$1.key >> ${file_client}
|
||||
echo "</key>" >> ${file_client}
|
||||
echo "key-direction 1" >> ${file_client}
|
||||
echo "<tls-auth>" >> ${file_client}
|
||||
cat /etc/openvpn/tls-auth.key >> ${file_client}
|
||||
echo "</tls-auth>" >> ${file_client}
|
||||
}
|
||||
|
||||
# Try to get our IP from the system and fallback to the Internet.
|
||||
# I do this to make the script compatible with NATed servers (LowEndSpirit/Scaleway)
|
||||
# and to avoid getting an IPv6.
|
||||
IP=$(ip addr | grep 'inet' | grep -v inet6 | grep -vE '127\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | grep -o -E '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | head -1)
|
||||
if [[ "$IP" = "" ]]; then
|
||||
IP=$(wget -qO- ipv4.icanhazip.com)
|
||||
fi
|
||||
# Get Internet network interface with default route
|
||||
NIC=$(ip -4 route ls | grep default | grep -Po '(?<=dev )(\S+)' | head -1)
|
||||
|
||||
if [[ -e /etc/openvpn/server.conf ]]; then
|
||||
while :
|
||||
do
|
||||
clear
|
||||
echo "OpenVPN-install (github.com/Angristan/OpenVPN-install)"
|
||||
echo ""
|
||||
echo "Looks like OpenVPN is already installed"
|
||||
echo ""
|
||||
echo "What do you want to do?"
|
||||
echo " 1) Add a cert for a new user"
|
||||
echo " 2) Revoke existing user cert"
|
||||
echo " 3) Remove OpenVPN"
|
||||
echo " 4) Exit"
|
||||
read -p "Select an option [1-4]: " option
|
||||
case $option in
|
||||
1)
|
||||
echo ""
|
||||
echo "Tell me a name for the client cert"
|
||||
echo "Please, use one word only, no special characters"
|
||||
read -p "Client name: " -e -i client CLIENT
|
||||
cd /etc/openvpn/easy-rsa/
|
||||
./easyrsa build-client-full $CLIENT nopass
|
||||
# Generates the custom client.ovpn
|
||||
newclient "$CLIENT"
|
||||
echo ""
|
||||
echo "Client $CLIENT added, certs available at $homeDir/$CLIENT.ovpn"
|
||||
exit
|
||||
;;
|
||||
2)
|
||||
NUMBEROFCLIENTS=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep -c "^V")
|
||||
if [[ "$NUMBEROFCLIENTS" = '0' ]]; then
|
||||
echo ""
|
||||
echo "You have no existing clients!"
|
||||
exit 5
|
||||
fi
|
||||
echo ""
|
||||
echo "Select the existing client certificate you want to revoke"
|
||||
tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep "^V" | cut -d '=' -f 2 | nl -s ') '
|
||||
if [[ "$NUMBEROFCLIENTS" = '1' ]]; then
|
||||
read -p "Select one client [1]: " CLIENTNUMBER
|
||||
else
|
||||
read -p "Select one client [1-$NUMBEROFCLIENTS]: " CLIENTNUMBER
|
||||
fi
|
||||
CLIENT=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep "^V" | cut -d '=' -f 2 | sed -n "$CLIENTNUMBER"p)
|
||||
cd /etc/openvpn/easy-rsa/
|
||||
./easyrsa --batch revoke $CLIENT
|
||||
EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
|
||||
rm -rf pki/reqs/$CLIENT.req
|
||||
rm -rf pki/private/$CLIENT.key
|
||||
rm -rf pki/issued/$CLIENT.crt
|
||||
rm -rf /etc/openvpn/crl.pem
|
||||
cp /etc/openvpn/easy-rsa/pki/crl.pem /etc/openvpn/crl.pem
|
||||
chmod 644 /etc/openvpn/crl.pem
|
||||
echo ""
|
||||
echo "Certificate for client $CLIENT revoked"
|
||||
echo "Exiting..."
|
||||
exit
|
||||
;;
|
||||
3)
|
||||
echo ""
|
||||
read -p "Do you really want to remove OpenVPN? [y/n]: " -e -i n REMOVE
|
||||
if [[ "$REMOVE" = 'y' ]]; then
|
||||
PORT=$(grep '^port ' /etc/openvpn/server.conf | cut -d " " -f 2)
|
||||
if pgrep firewalld; then
|
||||
# Using both permanent and not permanent rules to avoid a firewalld reload.
|
||||
firewall-cmd --zone=public --remove-port=$PORT/udp
|
||||
firewall-cmd --zone=trusted --remove-source=10.8.0.0/24
|
||||
firewall-cmd --permanent --zone=public --remove-port=$PORT/udp
|
||||
firewall-cmd --permanent --zone=trusted --remove-source=10.8.0.0/24
|
||||
fi
|
||||
if iptables -L -n | grep -qE 'REJECT|DROP'; then
|
||||
if [[ "$PROTOCOL" = 'udp' ]]; then
|
||||
iptables -D INPUT -p udp --dport $PORT -j ACCEPT
|
||||
else
|
||||
iptables -D INPUT -p tcp --dport $PORT -j ACCEPT
|
||||
fi
|
||||
iptables -D FORWARD -s 10.8.0.0/24 -j ACCEPT
|
||||
iptables-save > $IPTABLES
|
||||
fi
|
||||
iptables -t nat -D POSTROUTING -o $NIC -s 10.8.0.0/24 -j MASQUERADE
|
||||
iptables-save > $IPTABLES
|
||||
if hash sestatus 2>/dev/null; then
|
||||
if sestatus | grep "Current mode" | grep -qs "enforcing"; then
|
||||
if [[ "$PORT" != '1194' ]]; then
|
||||
semanage port -d -t openvpn_port_t -p udp $PORT
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
if [[ "$OS" = 'debian' ]]; then
|
||||
apt-get autoremove --purge -y openvpn
|
||||
elif [[ "$OS" = 'arch' ]]; then
|
||||
pacman -R openvpn --noconfirm
|
||||
else
|
||||
yum remove openvpn -y
|
||||
fi
|
||||
rm -rf /etc/openvpn
|
||||
rm -rf /usr/share/doc/openvpn*
|
||||
echo ""
|
||||
echo "OpenVPN removed!"
|
||||
else
|
||||
echo ""
|
||||
echo "Removal aborted!"
|
||||
fi
|
||||
exit
|
||||
;;
|
||||
4) exit;;
|
||||
esac
|
||||
done
|
||||
else
|
||||
clear
|
||||
echo "Welcome to the secure OpenVPN installer (github.com/Angristan/OpenVPN-install)"
|
||||
echo ""
|
||||
# OpenVPN setup and first user creation
|
||||
echo "I need to ask you a few questions before starting the setup"
|
||||
echo "You can leave the default options and just press enter if you are ok with them"
|
||||
echo ""
|
||||
echo "I need to know the IPv4 address of the network interface you want OpenVPN listening to."
|
||||
echo "If your server is running behind a NAT, (e.g. LowEndSpirit, Scaleway) leave the IP address as it is. (local/private IP)"
|
||||
echo "Otherwise, it should be your public IPv4 address."
|
||||
read -p "IP address: " -e -i $IP IP
|
||||
echo ""
|
||||
echo "What port do you want for OpenVPN?"
|
||||
read -p "Port: " -e -i 1194 PORT
|
||||
echo ""
|
||||
echo "What protocol do you want for OpenVPN?"
|
||||
echo "Unless UDP is blocked, you should not use TCP (unnecessarily slower)"
|
||||
while [[ $PROTOCOL != "UDP" && $PROTOCOL != "TCP" ]]; do
|
||||
read -p "Protocol [UDP/TCP]: " -e -i UDP PROTOCOL
|
||||
done
|
||||
echo ""
|
||||
echo "What DNS do you want to use with the VPN?"
|
||||
echo " 1) Current system resolvers (from /etc/resolv.conf)"
|
||||
echo " 2) Quad9 (Anycast: worldwide)"
|
||||
echo " 3) FDN (France)"
|
||||
echo " 4) DNS.WATCH (Germany)"
|
||||
echo " 5) OpenDNS (Anycast: worldwide)"
|
||||
echo " 6) Google (Anycast: worldwide)"
|
||||
echo " 7) Yandex Basic (Russia)"
|
||||
echo " 8) AdGuard DNS (Russia)"
|
||||
while [[ $DNS != "1" && $DNS != "2" && $DNS != "3" && $DNS != "4" && $DNS != "5" && $DNS != "6" && $DNS != "7" && $DNS != "8" ]]; do
|
||||
read -p "DNS [1-8]: " -e -i 1 DNS
|
||||
done
|
||||
echo ""
|
||||
echo "See https://github.com/Angristan/OpenVPN-install#encryption to learn more about "
|
||||
echo "the encryption in OpenVPN and the choices I made in this script."
|
||||
echo "Please note that all the choices proposed are secure (to a different degree)"
|
||||
echo "and are still viable to date, unlike some default OpenVPN options"
|
||||
echo ''
|
||||
echo "Choose which cipher you want to use for the data channel:"
|
||||
echo " 1) AES-128-CBC (fastest and sufficiently secure for everyone, recommended)"
|
||||
echo " 2) AES-192-CBC"
|
||||
echo " 3) AES-256-CBC"
|
||||
echo "Alternatives to AES, use them only if you know what you're doing."
|
||||
echo "They are relatively slower but as secure as AES."
|
||||
echo " 4) CAMELLIA-128-CBC"
|
||||
echo " 5) CAMELLIA-192-CBC"
|
||||
echo " 6) CAMELLIA-256-CBC"
|
||||
echo " 7) SEED-CBC"
|
||||
while [[ $CIPHER != "1" && $CIPHER != "2" && $CIPHER != "3" && $CIPHER != "4" && $CIPHER != "5" && $CIPHER != "6" && $CIPHER != "7" ]]; do
|
||||
read -p "Cipher [1-7]: " -e -i 1 CIPHER
|
||||
done
|
||||
case $CIPHER in
|
||||
1)
|
||||
CIPHER="cipher AES-128-CBC"
|
||||
;;
|
||||
2)
|
||||
CIPHER="cipher AES-192-CBC"
|
||||
;;
|
||||
3)
|
||||
CIPHER="cipher AES-256-CBC"
|
||||
;;
|
||||
4)
|
||||
CIPHER="cipher CAMELLIA-128-CBC"
|
||||
;;
|
||||
5)
|
||||
CIPHER="cipher CAMELLIA-192-CBC"
|
||||
;;
|
||||
6)
|
||||
CIPHER="cipher CAMELLIA-256-CBC"
|
||||
;;
|
||||
7)
|
||||
CIPHER="cipher SEED-CBC"
|
||||
;;
|
||||
esac
|
||||
echo ""
|
||||
echo "Choose what size of Diffie-Hellman key you want to use:"
|
||||
echo " 1) 2048 bits (fastest)"
|
||||
echo " 2) 3072 bits (recommended, best compromise)"
|
||||
echo " 3) 4096 bits (most secure)"
|
||||
while [[ $DH_KEY_SIZE != "1" && $DH_KEY_SIZE != "2" && $DH_KEY_SIZE != "3" ]]; do
|
||||
read -p "DH key size [1-3]: " -e -i 2 DH_KEY_SIZE
|
||||
done
|
||||
case $DH_KEY_SIZE in
|
||||
1)
|
||||
DH_KEY_SIZE="2048"
|
||||
;;
|
||||
2)
|
||||
DH_KEY_SIZE="3072"
|
||||
;;
|
||||
3)
|
||||
DH_KEY_SIZE="4096"
|
||||
;;
|
||||
esac
|
||||
echo ""
|
||||
echo "Choose what size of RSA key you want to use:"
|
||||
echo " 1) 2048 bits (fastest)"
|
||||
echo " 2) 3072 bits (recommended, best compromise)"
|
||||
echo " 3) 4096 bits (most secure)"
|
||||
while [[ $RSA_KEY_SIZE != "1" && $RSA_KEY_SIZE != "2" && $RSA_KEY_SIZE != "3" ]]; do
|
||||
read -p "RSA key size [1-3]: " -e -i 2 RSA_KEY_SIZE
|
||||
done
|
||||
case $RSA_KEY_SIZE in
|
||||
1)
|
||||
RSA_KEY_SIZE="2048"
|
||||
;;
|
||||
2)
|
||||
RSA_KEY_SIZE="3072"
|
||||
;;
|
||||
3)
|
||||
RSA_KEY_SIZE="4096"
|
||||
;;
|
||||
esac
|
||||
echo ""
|
||||
echo "Finally, tell me a name for the client certificate and configuration"
|
||||
while [[ $CLIENT = "" ]]; do
|
||||
echo "Please, use one word only, no special characters"
|
||||
read -p "Client name: " -e -i client CLIENT
|
||||
done
|
||||
echo ""
|
||||
echo "Okay, that was all I needed. We are ready to setup your OpenVPN server now"
|
||||
read -n1 -r -p "Press any key to continue..."
|
||||
|
||||
if [[ "$OS" = 'debian' ]]; then
|
||||
apt-get install ca-certificates -y
|
||||
# We add the OpenVPN repo to get the latest version.
|
||||
# Debian 7
|
||||
if [[ "$VERSION_ID" = 'VERSION_ID="7"' ]]; then
|
||||
echo "deb http://build.openvpn.net/debian/openvpn/stable wheezy main" > /etc/apt/sources.list.d/openvpn.list
|
||||
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
|
||||
apt-get update
|
||||
fi
|
||||
# Debian 8
|
||||
if [[ "$VERSION_ID" = 'VERSION_ID="8"' ]]; then
|
||||
echo "deb http://build.openvpn.net/debian/openvpn/stable jessie main" > /etc/apt/sources.list.d/openvpn.list
|
||||
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
|
||||
apt update
|
||||
fi
|
||||
# Ubuntu 12.04
|
||||
if [[ "$VERSION_ID" = 'VERSION_ID="12.04"' ]]; then
|
||||
echo "deb http://build.openvpn.net/debian/openvpn/stable precise main" > /etc/apt/sources.list.d/openvpn.list
|
||||
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
|
||||
apt-get update
|
||||
fi
|
||||
# Ubuntu 14.04
|
||||
if [[ "$VERSION_ID" = 'VERSION_ID="14.04"' ]]; then
|
||||
echo "deb http://build.openvpn.net/debian/openvpn/stable trusty main" > /etc/apt/sources.list.d/openvpn.list
|
||||
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
|
||||
apt-get update
|
||||
fi
|
||||
# Ubuntu >= 16.04 and Debian > 8 have OpenVPN > 2.3.3 without the need of a third party repository.
|
||||
# The we install OpenVPN
|
||||
apt-get install openvpn iptables openssl wget ca-certificates curl -y
|
||||
# Install iptables service
|
||||
if [[ ! -e /etc/systemd/system/iptables.service ]]; then
|
||||
mkdir /etc/iptables
|
||||
iptables-save > /etc/iptables/iptables.rules
|
||||
echo "#!/bin/sh
|
||||
iptables -F
|
||||
iptables -X
|
||||
iptables -t nat -F
|
||||
iptables -t nat -X
|
||||
iptables -t mangle -F
|
||||
iptables -t mangle -X
|
||||
iptables -P INPUT ACCEPT
|
||||
iptables -P FORWARD ACCEPT
|
||||
iptables -P OUTPUT ACCEPT" > /etc/iptables/flush-iptables.sh
|
||||
chmod +x /etc/iptables/flush-iptables.sh
|
||||
echo "[Unit]
|
||||
Description=Packet Filtering Framework
|
||||
DefaultDependencies=no
|
||||
Before=network-pre.target
|
||||
Wants=network-pre.target
|
||||
[Service]
|
||||
Type=oneshot
|
||||
ExecStart=/sbin/iptables-restore /etc/iptables/iptables.rules
|
||||
ExecReload=/sbin/iptables-restore /etc/iptables/iptables.rules
|
||||
ExecStop=/etc/iptables/flush-iptables.sh
|
||||
RemainAfterExit=yes
|
||||
[Install]
|
||||
WantedBy=multi-user.target" > /etc/systemd/system/iptables.service
|
||||
systemctl daemon-reload
|
||||
systemctl enable iptables.service
|
||||
fi
|
||||
elif [[ "$OS" = 'centos' || "$OS" = 'fedora' ]]; then
|
||||
if [[ "$OS" = 'centos' ]]; then
|
||||
yum install epel-release -y
|
||||
fi
|
||||
yum install openvpn iptables openssl wget ca-certificates curl -y
|
||||
# Install iptables service
|
||||
if [[ ! -e /etc/systemd/system/iptables.service ]]; then
|
||||
mkdir /etc/iptables
|
||||
iptables-save > /etc/iptables/iptables.rules
|
||||
echo "#!/bin/sh
|
||||
iptables -F
|
||||
iptables -X
|
||||
iptables -t nat -F
|
||||
iptables -t nat -X
|
||||
iptables -t mangle -F
|
||||
iptables -t mangle -X
|
||||
iptables -P INPUT ACCEPT
|
||||
iptables -P FORWARD ACCEPT
|
||||
iptables -P OUTPUT ACCEPT" > /etc/iptables/flush-iptables.sh
|
||||
chmod +x /etc/iptables/flush-iptables.sh
|
||||
echo "[Unit]
|
||||
Description=Packet Filtering Framework
|
||||
DefaultDependencies=no
|
||||
Before=network-pre.target
|
||||
Wants=network-pre.target
|
||||
[Service]
|
||||
Type=oneshot
|
||||
ExecStart=/sbin/iptables-restore /etc/iptables/iptables.rules
|
||||
ExecReload=/sbin/iptables-restore /etc/iptables/iptables.rules
|
||||
ExecStop=/etc/iptables/flush-iptables.sh
|
||||
RemainAfterExit=yes
|
||||
[Install]
|
||||
WantedBy=multi-user.target" > /etc/systemd/system/iptables.service
|
||||
systemctl daemon-reload
|
||||
systemctl enable iptables.service
|
||||
# Disable firewalld to allow iptables to start upon reboot
|
||||
systemctl disable firewalld
|
||||
systemctl mask firewalld
|
||||
fi
|
||||
else
|
||||
# Else, the distro is ArchLinux
|
||||
echo ""
|
||||
echo ""
|
||||
echo "As you're using ArchLinux, I need to update the packages on your system to install those I need."
|
||||
echo "Not doing that could cause problems between dependencies, or missing files in repositories."
|
||||
echo ""
|
||||
echo "Continuing will update your installed packages and install needed ones."
|
||||
while [[ $CONTINUE != "y" && $CONTINUE != "n" ]]; do
|
||||
read -p "Continue ? [y/n]: " -e -i y CONTINUE
|
||||
done
|
||||
if [[ "$CONTINUE" = "n" ]]; then
|
||||
echo "Ok, bye !"
|
||||
exit 4
|
||||
fi
|
||||
|
||||
if [[ "$OS" = 'arch' ]]; then
|
||||
# Install dependencies
|
||||
pacman -Syu openvpn iptables openssl wget ca-certificates curl --needed --noconfirm
|
||||
iptables-save > /etc/iptables/iptables.rules # iptables won't start if this file does not exist
|
||||
systemctl daemon-reload
|
||||
systemctl enable iptables
|
||||
systemctl start iptables
|
||||
fi
|
||||
fi
|
||||
# Find out if the machine uses nogroup or nobody for the permissionless group
|
||||
if grep -qs "^nogroup:" /etc/group; then
|
||||
NOGROUP=nogroup
|
||||
else
|
||||
NOGROUP=nobody
|
||||
fi
|
||||
|
||||
# An old version of easy-rsa was available by default in some openvpn packages
|
||||
if [[ -d /etc/openvpn/easy-rsa/ ]]; then
|
||||
rm -rf /etc/openvpn/easy-rsa/
|
||||
fi
|
||||
# Get easy-rsa
|
||||
wget -O ~/EasyRSA-3.0.3.tgz https://github.com/OpenVPN/easy-rsa/releases/download/v3.0.3/EasyRSA-3.0.3.tgz
|
||||
tar xzf ~/EasyRSA-3.0.3.tgz -C ~/
|
||||
mv ~/EasyRSA-3.0.3/ /etc/openvpn/
|
||||
mv /etc/openvpn/EasyRSA-3.0.3/ /etc/openvpn/easy-rsa/
|
||||
chown -R root:root /etc/openvpn/easy-rsa/
|
||||
rm -rf ~/EasyRSA-3.0.3.tgz
|
||||
cd /etc/openvpn/easy-rsa/
|
||||
echo "set_var EASYRSA_KEY_SIZE $RSA_KEY_SIZE" > vars
|
||||
# Create the PKI, set up the CA, the DH params and the server + client certificates
|
||||
./easyrsa init-pki
|
||||
./easyrsa --batch build-ca nopass
|
||||
openssl dhparam -out dh.pem $DH_KEY_SIZE
|
||||
./easyrsa build-server-full server nopass
|
||||
./easyrsa build-client-full $CLIENT nopass
|
||||
EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
|
||||
# generate tls-auth key
|
||||
openvpn --genkey --secret /etc/openvpn/tls-auth.key
|
||||
# Move all the generated files
|
||||
cp pki/ca.crt pki/private/ca.key dh.pem pki/issued/server.crt pki/private/server.key /etc/openvpn/easy-rsa/pki/crl.pem /etc/openvpn
|
||||
# Make cert revocation list readable for non-root
|
||||
chmod 644 /etc/openvpn/crl.pem
|
||||
|
||||
# Generate server.conf
|
||||
echo "port $PORT" > /etc/openvpn/server.conf
|
||||
if [[ "$PROTOCOL" = 'UDP' ]]; then
|
||||
echo "proto udp" >> /etc/openvpn/server.conf
|
||||
elif [[ "$PROTOCOL" = 'TCP' ]]; then
|
||||
echo "proto tcp" >> /etc/openvpn/server.conf
|
||||
fi
|
||||
echo "dev tun
|
||||
user nobody
|
||||
group $NOGROUP
|
||||
persist-key
|
||||
persist-tun
|
||||
keepalive 10 120
|
||||
topology subnet
|
||||
server 10.8.0.0 255.255.255.0
|
||||
ifconfig-pool-persist ipp.txt" >> /etc/openvpn/server.conf
|
||||
# DNS resolvers
|
||||
case $DNS in
|
||||
1)
|
||||
# Obtain the resolvers from resolv.conf and use them for OpenVPN
|
||||
grep -v '#' /etc/resolv.conf | grep 'nameserver' | grep -E -o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | while read line; do
|
||||
echo "push \"dhcp-option DNS $line\"" >> /etc/openvpn/server.conf
|
||||
done
|
||||
;;
|
||||
2) #Quad9
|
||||
echo 'push "dhcp-option DNS 9.9.9.9"' >> /etc/openvpn/server.conf
|
||||
;;
|
||||
3) #FDN
|
||||
echo 'push "dhcp-option DNS 80.67.169.12"' >> /etc/openvpn/server.conf
|
||||
echo 'push "dhcp-option DNS 80.67.169.40"' >> /etc/openvpn/server.conf
|
||||
;;
|
||||
4) #DNS.WATCH
|
||||
echo 'push "dhcp-option DNS 84.200.69.80"' >> /etc/openvpn/server.conf
|
||||
echo 'push "dhcp-option DNS 84.200.70.40"' >> /etc/openvpn/server.conf
|
||||
;;
|
||||
5) #OpenDNS
|
||||
echo 'push "dhcp-option DNS 208.67.222.222"' >> /etc/openvpn/server.conf
|
||||
echo 'push "dhcp-option DNS 208.67.220.220"' >> /etc/openvpn/server.conf
|
||||
;;
|
||||
6) #Google
|
||||
echo 'push "dhcp-option DNS 8.8.8.8"' >> /etc/openvpn/server.conf
|
||||
echo 'push "dhcp-option DNS 8.8.4.4"' >> /etc/openvpn/server.conf
|
||||
;;
|
||||
7) #Yandex Basic
|
||||
echo 'push "dhcp-option DNS 77.88.8.8"' >> /etc/openvpn/server.conf
|
||||
echo 'push "dhcp-option DNS 77.88.8.1"' >> /etc/openvpn/server.conf
|
||||
;;
|
||||
8) #AdGuard DNS
|
||||
echo 'push "dhcp-option DNS 176.103.130.130"' >> /etc/openvpn/server.conf
|
||||
echo 'push "dhcp-option DNS 176.103.130.131"' >> /etc/openvpn/server.conf
|
||||
;;
|
||||
esac
|
||||
echo 'push "redirect-gateway def1 bypass-dhcp" '>> /etc/openvpn/server.conf
|
||||
echo "crl-verify crl.pem
|
||||
ca ca.crt
|
||||
cert server.crt
|
||||
key server.key
|
||||
tls-auth tls-auth.key 0
|
||||
dh dh.pem
|
||||
auth SHA256
|
||||
$CIPHER
|
||||
tls-server
|
||||
tls-version-min 1.2
|
||||
tls-cipher TLS-DHE-RSA-WITH-AES-128-GCM-SHA256
|
||||
status openvpn.log
|
||||
verb 3" >> /etc/openvpn/server.conf
|
||||
|
||||
# Create the sysctl configuration file if needed (mainly for Arch Linux)
|
||||
if [[ ! -e $SYSCTL ]]; then
|
||||
touch $SYSCTL
|
||||
fi
|
||||
|
||||
# Enable net.ipv4.ip_forward for the system
|
||||
sed -i '/\<net.ipv4.ip_forward\>/c\net.ipv4.ip_forward=1' $SYSCTL
|
||||
if ! grep -q "\<net.ipv4.ip_forward\>" $SYSCTL; then
|
||||
echo 'net.ipv4.ip_forward=1' >> $SYSCTL
|
||||
fi
|
||||
# Avoid an unneeded reboot
|
||||
echo 1 > /proc/sys/net/ipv4/ip_forward
|
||||
# Set NAT for the VPN subnet
|
||||
iptables -t nat -A POSTROUTING -o $NIC -s 10.8.0.0/24 -j MASQUERADE
|
||||
# Save persitent iptables rules
|
||||
iptables-save > $IPTABLES
|
||||
if pgrep firewalld; then
|
||||
# We don't use --add-service=openvpn because that would only work with
|
||||
# the default port. Using both permanent and not permanent rules to
|
||||
# avoid a firewalld reload.
|
||||
if [[ "$PROTOCOL" = 'UDP' ]]; then
|
||||
firewall-cmd --zone=public --add-port=$PORT/udp
|
||||
firewall-cmd --permanent --zone=public --add-port=$PORT/udp
|
||||
elif [[ "$PROTOCOL" = 'TCP' ]]; then
|
||||
firewall-cmd --zone=public --add-port=$PORT/tcp
|
||||
firewall-cmd --permanent --zone=public --add-port=$PORT/tcp
|
||||
fi
|
||||
firewall-cmd --zone=trusted --add-source=10.8.0.0/24
|
||||
firewall-cmd --permanent --zone=trusted --add-source=10.8.0.0/24
|
||||
fi
|
||||
if iptables -L -n | grep -qE 'REJECT|DROP'; then
|
||||
# If iptables has at least one REJECT rule, we asume this is needed.
|
||||
# Not the best approach but I can't think of other and this shouldn't
|
||||
# cause problems.
|
||||
if [[ "$PROTOCOL" = 'UDP' ]]; then
|
||||
iptables -I INPUT -p udp --dport $PORT -j ACCEPT
|
||||
elif [[ "$PROTOCOL" = 'TCP' ]]; then
|
||||
iptables -I INPUT -p tcp --dport $PORT -j ACCEPT
|
||||
fi
|
||||
iptables -I FORWARD -s 10.8.0.0/24 -j ACCEPT
|
||||
iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
|
||||
# Save persitent OpenVPN rules
|
||||
iptables-save > $IPTABLES
|
||||
fi
|
||||
# If SELinux is enabled and a custom port was selected, we need this
|
||||
if hash sestatus 2>/dev/null; then
|
||||
if sestatus | grep "Current mode" | grep -qs "enforcing"; then
|
||||
if [[ "$PORT" != '1194' ]]; then
|
||||
# semanage isn't available in CentOS 6 by default
|
||||
if ! hash semanage 2>/dev/null; then
|
||||
yum install policycoreutils-python -y
|
||||
fi
|
||||
if [[ "$PROTOCOL" = 'UDP' ]]; then
|
||||
semanage port -a -t openvpn_port_t -p udp $PORT
|
||||
elif [[ "$PROTOCOL" = 'TCP' ]]; then
|
||||
semanage port -a -t openvpn_port_t -p tcp $PORT
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
# And finally, restart OpenVPN
|
||||
if [[ "$OS" = 'debian' ]]; then
|
||||
# Little hack to check for systemd
|
||||
if pgrep systemd-journal; then
|
||||
#Workaround to fix OpenVPN service on OpenVZ
|
||||
sed -i 's|LimitNPROC|#LimitNPROC|' /lib/systemd/system/openvpn\@.service
|
||||
sed -i 's|/etc/openvpn/server|/etc/openvpn|' /lib/systemd/system/openvpn\@.service
|
||||
sed -i 's|%i.conf|server.conf|' /lib/systemd/system/openvpn\@.service
|
||||
systemctl daemon-reload
|
||||
systemctl restart openvpn
|
||||
systemctl enable openvpn
|
||||
else
|
||||
/etc/init.d/openvpn restart
|
||||
fi
|
||||
else
|
||||
if pgrep systemd-journal; then
|
||||
if [[ "$OS" = 'arch' || "$OS" = 'fedora' ]]; then
|
||||
#Workaround to avoid rewriting the entire script for Arch & Fedora
|
||||
sed -i 's|/etc/openvpn/server|/etc/openvpn|' /usr/lib/systemd/system/openvpn-server@.service
|
||||
sed -i 's|%i.conf|server.conf|' /usr/lib/systemd/system/openvpn-server@.service
|
||||
systemctl daemon-reload
|
||||
systemctl restart openvpn-server@openvpn.service
|
||||
systemctl enable openvpn-server@openvpn.service
|
||||
else
|
||||
systemctl restart openvpn@server.service
|
||||
systemctl enable openvpn@server.service
|
||||
fi
|
||||
else
|
||||
service openvpn restart
|
||||
chkconfig openvpn on
|
||||
fi
|
||||
fi
|
||||
# Try to detect a NATed connection and ask about it to potential LowEndSpirit/Scaleway users
|
||||
EXTERNALIP=$(wget -qO- ipv4.icanhazip.com)
|
||||
if [[ "$IP" != "$EXTERNALIP" ]]; then
|
||||
echo ""
|
||||
echo "Looks like your server is behind a NAT!"
|
||||
echo ""
|
||||
echo "If your server is NATed (e.g. LowEndSpirit, Scaleway, or behind a router),"
|
||||
echo "then I need to know the address that can be used to access it from outside."
|
||||
echo "If that's not the case, just ignore this and leave the next field blank"
|
||||
read -p "External IP or domain name: " -e USEREXTERNALIP
|
||||
if [[ "$USEREXTERNALIP" != "" ]]; then
|
||||
IP=$USEREXTERNALIP
|
||||
fi
|
||||
fi
|
||||
# client-template.txt is created so we have a template to add further users later
|
||||
file_client_tpl=/etc/openvpn/client-template.txt
|
||||
echo "client" > ${file_client_tpl}
|
||||
if [[ "$PROTOCOL" = 'UDP' ]]; then
|
||||
echo "proto udp" >> ${file_client_tpl}
|
||||
elif [[ "$PROTOCOL" = 'TCP' ]]; then
|
||||
echo "proto tcp-client" >> ${file_client_tpl}
|
||||
fi
|
||||
echo "remote $IP $PORT
|
||||
dev tun
|
||||
resolv-retry infinite
|
||||
nobind
|
||||
persist-key
|
||||
persist-tun
|
||||
remote-cert-tls server
|
||||
auth SHA256
|
||||
auth-nocache
|
||||
$CIPHER
|
||||
tls-client
|
||||
tls-version-min 1.2
|
||||
tls-cipher TLS-DHE-RSA-WITH-AES-128-GCM-SHA256
|
||||
setenv opt block-outside-dns
|
||||
verb 3" >> /etc/openvpn/client-template.txt
|
||||
|
||||
# Generate the custom client.ovpn
|
||||
newclient "$CLIENT"
|
||||
echo ""
|
||||
echo "Finished!"
|
||||
echo ""
|
||||
echo "Your client config is available at $homeDir/$CLIENT.ovpn"
|
||||
echo "If you want to add more clients, you simply need to run this script another time!"
|
||||
fi
|
||||
exit 0;
|
||||
Loading…
x
Reference in New Issue
Block a user