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added feature for selecting custom subnet-configuration for openvpn-installation including regarding questions

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This commit is contained in:
Tim Mitsch 2020-02-29 11:58:56 +01:00
parent 3a5bcf5d2d
commit 618eb61da2
1 changed files with 41 additions and 19 deletions
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60
openvpn-install.sh
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@ -112,8 +112,8 @@ function installUnbound() {
apt-get install -y unbound
# Configuration
echo 'interface: 10.8.0.1
access-control: 10.8.0.1/24 allow
echo 'interface: $VPN_SUBNET.1
access-control: $VPN_SUBNET.1/24 allow
hide-identity: yes
hide-version: yes
use-caps-for-id: yes
@ -123,8 +123,8 @@ prefetch: yes' >>/etc/unbound/unbound.conf
yum install -y unbound
# Configuration
sed -i 's|# interface: 0.0.0.0$|interface: 10.8.0.1|' /etc/unbound/unbound.conf
sed -i 's|# access-control: 127.0.0.0/8 allow|access-control: 10.8.0.1/24 allow|' /etc/unbound/unbound.conf
sed -i 's|# interface: 0.0.0.0$|interface: $VPN_SUBNET.1|' /etc/unbound/unbound.conf
sed -i 's|# access-control: 127.0.0.0/8 allow|access-control: $VPN_SUBNET.1/24 allow|' /etc/unbound/unbound.conf
sed -i 's|# hide-identity: no|hide-identity: yes|' /etc/unbound/unbound.conf
sed -i 's|# hide-version: no|hide-version: yes|' /etc/unbound/unbound.conf
sed -i 's|use-caps-for-id: no|use-caps-for-id: yes|' /etc/unbound/unbound.conf
@ -133,8 +133,8 @@ prefetch: yes' >>/etc/unbound/unbound.conf
dnf install -y unbound
# Configuration
sed -i 's|# interface: 0.0.0.0$|interface: 10.8.0.1|' /etc/unbound/unbound.conf
sed -i 's|# access-control: 127.0.0.0/8 allow|access-control: 10.8.0.1/24 allow|' /etc/unbound/unbound.conf
sed -i 's|# interface: 0.0.0.0$|interface: $VPN_SUBNET.1|' /etc/unbound/unbound.conf
sed -i 's|# access-control: 127.0.0.0/8 allow|access-control: $VPN_SUBNET.1/24 allow|' /etc/unbound/unbound.conf
sed -i 's|# hide-identity: no|hide-identity: yes|' /etc/unbound/unbound.conf
sed -i 's|# hide-version: no|hide-version: yes|' /etc/unbound/unbound.conf
sed -i 's|# use-caps-for-id: no|use-caps-for-id: yes|' /etc/unbound/unbound.conf
@ -156,8 +156,8 @@ prefetch: yes' >>/etc/unbound/unbound.conf
directory: "/etc/unbound"
trust-anchor-file: trusted-key.key
root-hints: root.hints
interface: 10.8.0.1
access-control: 10.8.0.1/24 allow
interface: $VPN_SUBNET.1
access-control: $VPN_SUBNET.1/24 allow
port: 53
num-threads: 2
use-caps-for-id: yes
@ -191,8 +191,8 @@ private-address: ::ffff:0:0/96" >>/etc/unbound/unbound.conf
# Add Unbound 'server' for the OpenVPN subnet
echo 'server:
interface: 10.8.0.1
access-control: 10.8.0.1/24 allow
interface: $VPN_SUBNET.1
access-control: $VPN_SUBNET.1/24 allow
hide-identity: yes
hide-version: yes
use-caps-for-id: yes
@ -295,6 +295,31 @@ function installQuestions() {
;;
esac
echo ""
echo "Custom octets: Notice when using custom octets only private networks as from RFC 1918 (https://tools.ietf.org/html/rfc1918) are allowed: (10.x.x.0, 192.168.x.0)."
until [[ "$CUSTOM_OCTETS" =~ (y|n) ]]; do
read -rp "Do you want to define custom octets for your OpenVPN-Adressing (default is $VPN_SUBNET.x)? [y/n] " -e -i 'n' CUSTOM_OCTETS
done
if [[ $CUSTOM_OCTETS == "y" ]];then
until [[ "$OCTET01" =~ ^[0-9]+$ ]] && ([ "$OCTET01" -eq 10 ] || [ "$OCTET01" -eq 192 ]); do
read -rp "First octet [10,192]: " -e -i 10 OCTET01
done
if [[ $OCTET01 -eq 192 ]];then
$OCTET02 = 168
else
until [[ "$OCTET02" =~ ^[0-9]+$ ]] && ([ "$OCTET02" -ge 0 ] && [ "$OCTET02" -le 255 ]); do
read -rp "Second octet [0-255]: " -e -i 8 OCTET02
done
fi
until [[ "$OCTET03" =~ ^[0-9]+$ ]] && ([ "$OCTET03" -ge 0 ] && [ "$OCTET03" -le 255 ]); do
read -rp "Third octet [0-255]: " -e -i 0 OCTET03
done
VPN_SUBNET="$OCTET01.$OCTET02.$OCTET03"
echo "Using subnet $VPN_SUBNET.0 for further installation"
else
VPN_SUBNET="$VPN_SUBNET"
fi
echo ""
echo "What protocol do you want OpenVPN to use?"
echo "UDP is faster. Unless it is not available, you shouldn't use TCP."
echo " 1) UDP"
@ -780,8 +805,8 @@ 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
server $VPN_SUBNET.0 255.255.255.0
ifconfig-pool-persist ipp.txt" >> /etc/openvpn/server.conf
# DNS resolvers
case $DNS in
@ -801,11 +826,8 @@ ifconfig-pool-persist ipp.txt" >>/etc/openvpn/server.conf
fi
done
;;
2) # Self-hosted DNS resolver (Unbound)
echo 'push "dhcp-option DNS 10.8.0.1"' >>/etc/openvpn/server.conf
if [[ $IPV6_SUPPORT == 'y' ]]; then
echo 'push "dhcp-option DNS fd42:42:42:42::1"' >>/etc/openvpn/server.conf
fi
2)
echo 'push "dhcp-option DNS $VPN_SUBNET.1"' >> /etc/openvpn/server.conf
;;
3) # Cloudflare
echo 'push "dhcp-option DNS 1.0.0.1"' >>/etc/openvpn/server.conf
@ -962,7 +984,7 @@ verb 3" >>/etc/openvpn/server.conf
# Script to add rules
echo "#!/bin/sh
iptables -t nat -I POSTROUTING 1 -s 10.8.0.0/24 -o $NIC -j MASQUERADE
iptables -t nat -I POSTROUTING 1 -s $VPN_SUBNET.0/24 -o $NIC -j MASQUERADE
iptables -I INPUT 1 -i tun0 -j ACCEPT
iptables -I FORWARD 1 -i $NIC -o tun0 -j ACCEPT
iptables -I FORWARD 1 -i tun0 -o $NIC -j ACCEPT
@ -978,7 +1000,7 @@ ip6tables -I INPUT 1 -i $NIC -p $PROTOCOL --dport $PORT -j ACCEPT" >>/etc/iptabl
# Script to remove rules
echo "#!/bin/sh
iptables -t nat -D POSTROUTING -s 10.8.0.0/24 -o $NIC -j MASQUERADE
iptables -t nat -D POSTROUTING -s $VPN_SUBNET.0/24 -o $NIC -j MASQUERADE
iptables -D INPUT -i tun0 -j ACCEPT
iptables -D FORWARD -i $NIC -o tun0 -j ACCEPT
iptables -D FORWARD -i tun0 -o $NIC -j ACCEPT