mirror of
https://github.com/angristan/openvpn-install.git
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angristan
parent
a34d13adbb
commit
5844a8440f
@ -100,6 +100,7 @@ The script supports these OS and architectures:
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| CentOS 7 | ❔ | ✅ | ❌ | ✅ |
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| Debian 8 | ✅ | ✅ | ❌ | ❌ |
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| Debian 9 | ❌ | ✅ | ✅ | ✅ |
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| Debian 10 | ❔ | ✅ | ❔ | ❔ |
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| Fedora 27 | ❔ | ✅ | ❔ | ❔ |
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| Fedora 28 | ❔ | ✅ | ❔ | ❔ |
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| Ubuntu 16.04 | ✅ | ✅ | ❌ | ❌ |
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@ -264,7 +265,7 @@ It defaults to `prime256v1`.
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From the OpenVPN wiki, about `--auth`:
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> Authenticate data channel packets and (if enabled) tls-auth control channel packets with HMAC using message digest algorithm alg. (The default is SHA1 ). HMAC is a commonly used message authentication algorithm (MAC) that uses a data string, a secure hash algorithm, and a key, to produce a digital signature.
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>
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>
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> If an AEAD cipher mode (e.g. GCM) is chosen, the specified --auth algorithm is ignored for the data channel, and the authentication method of the AEAD cipher is used instead. Note that alg still specifies the digest used for tls-auth.
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SHA1 [isn't safe anymore](https://en.wikipedia.org/wiki/SHA-1#Attacks).
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@ -282,13 +283,13 @@ It defaults to `SHA256`.
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From the OpenVPN wiki, about `tls-auth`:
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> Add an additional layer of HMAC authentication on top of the TLS control channel to mitigate DoS attacks and attacks on the TLS stack.
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>
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>
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> In a nutshell, --tls-auth enables a kind of "HMAC firewall" on OpenVPN's TCP/UDP port, where TLS control channel packets bearing an incorrect HMAC signature can be dropped immediately without response.
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About `tls-crypt`:
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> Encrypt and authenticate all control channel packets with the key from keyfile. (See --tls-auth for more background.)
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>
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>
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> Encrypting (and authenticating) control channel packets:
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> - provides more privacy by hiding the certificate used for the TLS connection,
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> - makes it harder to identify OpenVPN traffic as such,
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1
Vagrantfile
vendored
1
Vagrantfile
vendored
@ -5,6 +5,7 @@ autostart_machines = ENV['VAGRANT_AUTOSTART'] == 'true' || false
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# else, run `vagrant up <hostname>`
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machines = [
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{ hostname: 'debian-10', box: 'debian/stretch64' },
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{ hostname: 'debian-9', box: 'debian/stretch64' },
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{ hostname: 'debian-8', box: 'debian/jessie64' },
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{ hostname: 'ubuntu-1604', box: 'ubuntu/bionic64' },
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@ -21,7 +21,7 @@ function checkOS () {
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source /etc/os-release
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if [[ "$ID" == "debian" ]]; then
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if [[ ! $VERSION_ID =~ (8|9) ]]; then
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if [[ ! $VERSION_ID =~ (8|9|10) ]]; then
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echo "⚠️ Your version of Debian is not supported."
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echo ""
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echo "However, if you're using Debian >= 9 or unstable/testing then you can continue."
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@ -128,7 +128,7 @@ prefetch: yes' >> /etc/unbound/unbound.conf
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curl -o /etc/unbound/root.hints https://www.internic.net/domain/named.cache
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mv /etc/unbound/unbound.conf /etc/unbound/unbound.conf.old
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echo 'server:
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use-syslog: yes
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do-daemonize: no
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@ -650,10 +650,10 @@ function installOpenVPN () {
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# ECDH keys are generated on-the-fly so we don't need to generate them beforehand
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openssl dhparam -out dh.pem $DH_KEY_SIZE
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fi
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./easyrsa build-server-full "$SERVER_NAME" nopass
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EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
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case $TLS_SIG in
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1)
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# Generate tls-crypt key
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@ -664,13 +664,13 @@ function installOpenVPN () {
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openvpn --genkey --secret /etc/openvpn/tls-auth.key
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;;
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esac
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# Move all the generated files
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cp pki/ca.crt pki/private/ca.key "pki/issued/$SERVER_NAME.crt" "pki/private/$SERVER_NAME.key" /etc/openvpn/easy-rsa/pki/crl.pem /etc/openvpn
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if [[ $DH_TYPE == "2" ]]; then
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cp dh.pem /etc/openvpn
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fi
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# Make cert revocation list readable for non-root
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chmod 644 /etc/openvpn/crl.pem
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@ -781,7 +781,7 @@ push "redirect-gateway ipv6"' >> /etc/openvpn/server.conf
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echo "crl-verify crl.pem
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ca ca.crt
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cert $SERVER_NAME.crt
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key $SERVER_NAME.key
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key $SERVER_NAME.key
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auth $HMAC_ALG
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cipher $CIPHER
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ncp-ciphers $CIPHER
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@ -815,7 +815,7 @@ verb 3" >> /etc/openvpn/server.conf
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if [[ "$OS" = 'arch' || "$OS" = 'fedora' ]]; then
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# Don't modify package-provided service
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cp /usr/lib/systemd/system/openvpn-server@.service /etc/systemd/system/openvpn-server@.service
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# Workaround to fix OpenVPN service on OpenVZ
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sed -i 's|LimitNPROC|#LimitNPROC|' /etc/systemd/system/openvpn-server@.service
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# Another workaround to keep using /etc/openvpn/
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@ -836,12 +836,12 @@ verb 3" >> /etc/openvpn/server.conf
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else
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# Don't modify package-provided service
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cp /lib/systemd/system/openvpn\@.service /etc/systemd/system/openvpn\@.service
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# Workaround to fix OpenVPN service on OpenVZ
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sed -i 's|LimitNPROC|#LimitNPROC|' /etc/systemd/system/openvpn\@.service
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# Another workaround to keep using /etc/openvpn/
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sed -i 's|/etc/openvpn/server|/etc/openvpn|' /etc/systemd/system/openvpn\@.service
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systemctl daemon-reload
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systemctl restart openvpn@server
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systemctl enable openvpn@server
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