diff --git a/README.md b/README.md
index c2b068c..ac329cf 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-## openvpn-install
+## OpenVPN-install
Secure OpenVPN installer for Debian, Ubuntu, CentOS and Arch Linux.
This script will let you setup your own secure VPN server in just a few minutes.
@@ -12,6 +12,8 @@ Here is a preview of the installer :
**You have to enable the TUN module otherwise OpenVPN won't work.** Ask your host if you don't know how to do it. If the TUN module is not enabled, the script will warn you and exit.
+You can get a cheap VPS to run this script for $2.50/month worldwide at [Vultr](https://goo.gl/Xyd1Sc) or 3€/month for unlimited bandwidth in France at [PulseHeberg](https://goo.gl/oBhgaj).
+
First, get the script and make it executable :
```
@@ -48,23 +50,27 @@ On the client-side, it's less problematic, but if you want to use an OpenVPN ser
## Compatibility
-The script is made to work on these OS :
-- Debian 7
-- Debian 8
-- Ubuntu 12.04 LTS
-- Ubuntu 14.04 LTS
-- Ubuntu 16.04 LTS
-- Ubuntu 16.10
-- CentOS 6
-- CentOS 7
-- Arch Linux
+| | i386 | amd64 | armhf | arm64 |
+|:------------:|:----:|:-----:|:-----:|:-----:|
+| Debian 8 | ✔️ | ✔️ | ❌ | ❌ |
+| Debian 9 | ✔️ | ✔️ | ✔️ | ✔️ |
+| Ubuntu 14.04 | ✔️ | ✔️ | ❌ | ❌ |
+| Ubuntu 16.04 | ✔️ | ✔️ | ❌ | ❌ |
+| Ubuntu 17.04 | ✔️ | ✔️ | ✔️ | ✔️ |
+| CentOS 6 | ✔️ | ✔️ | ❔ | ❔ |
+| CentOS 7 | ✔️ | ✔️ | ✔️ | ❔ |
+| Arch Linux | ✔️ | ✔️ | ❔ | ❌[(❔)](https://github.com/Angristan/OpenVPN-install/issues/99) |
+
+- ✔️ = tested and compatible
+
+- ❔ = untested
+
+- ❌ = tested and not compatible
(It should also work on Debian unstable/testing and Ubuntu beta).
If your're using an Ubuntu version that is not supported by the script, be aware that it's not supported by Ubuntu either, thus it's insecure.
-You can get a cheap VPS to run this script for 3€/month at [PulseHeberg](https://goo.gl/oBhgaj).
-
## Features
This fork includes the following features :
@@ -79,7 +85,7 @@ This fork includes the following features :
- Up-to-date OpenVPN thanks to [EPEL](http://fedoraproject.org/wiki/EPEL) for CentOS and [swupdate.openvpn.net](https://community.openvpn.net/openvpn/wiki/OpenvpnSoftwareRepos) for Ubuntu and Debian. These are third-party yet trusted repositories.
- Other improvements !
-##DNS
+## DNS
The script will ask you which DNS resolvers you want to use when connected to the VPN.
@@ -90,6 +96,7 @@ Here are the possibilities :
- [DNS.WATCH DNS Servers](https://dns.watch/index), recommended if you're in western europe (Germany)
- [OpenDNS](https://en.wikipedia.org/wiki/OpenDNS), not recommened but fast wordlwide (Anycast servers)
- [Google Public DNS](https://en.wikipedia.org/wiki/Google_Public_DNS), not recommended, but fast worldwide (Anycast servers)
+- [Yandex Basic DNS](https://dns.yandex.com/), not recommended, but fast in Russia
- Soon : local resolver :D
Any other fast, trustable and neutral servers proposition is welcome.
@@ -177,7 +184,7 @@ To quote the [OpenVPN documentation](https://community.openvpn.net/openvpn/wiki/
>Of the currently supported ciphers, OpenVPN currently recommends using AES-256-CBC or AES-128-CBC. OpenVPN 2.4 and newer will also support GCM. For 2.4+, we recommend using AES-256-GCM or AES-128-GCM.
-Of course I will update the script to add AES-GCM mode (as weel as ECDH and ECDSA) as soon as OpenVPN 2.4 is released.
+Of course I will update the script to add AES-GCM mode (as well as ECDH and ECDSA) as soon as OpenVPN 2.4 is released.
For now, these cipher are available in the setup :
diff --git a/openvpn-install.sh b/openvpn-install.sh
index 19f1213..ba8c7af 100644
--- a/openvpn-install.sh
+++ b/openvpn-install.sh
@@ -24,14 +24,14 @@ if [[ -e /etc/debian_version ]]; then
# Getting the version number, to verify that a recent version of OpenVPN is available
VERSION_ID=$(cat /etc/os-release | grep "VERSION_ID")
RCLOCAL='/etc/rc.local'
- if [[ "$VERSION_ID" != 'VERSION_ID="7"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="8"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="12.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="14.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="16.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="16.10"' ]]; then
+ SYSCTL='/etc/sysctl.conf'
+ if [[ "$VERSION_ID" != 'VERSION_ID="8"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="9"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="14.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="16.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="17.04"' ]]; then
echo "Your version of Debian/Ubuntu is not supported."
- echo "I can't install OpenVPN 2.4 on your system."
+ 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, this version of OpenVPN is available on these."
- echo "Keep in mind these releases are not supported, though."
-
+ 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
@@ -43,29 +43,50 @@ if [[ -e /etc/debian_version ]]; then
elif [[ -e /etc/centos-release || -e /etc/redhat-release ]]; then
OS=centos
RCLOCAL='/etc/rc.d/rc.local'
+ SYSCTL='/etc/sysctl.conf'
# Needed for CentOS 7
chmod +x /etc/rc.d/rc.local
+elif [[ -e /etc/arch-release ]]; then
+ OS=arch
+ RCLOCAL='/etc/rc.local'
+ SYSCTL='/etc/sysctl.d/openvpn.conf'
else
- echo "Looks like you aren't running this installer on a Debian, Ubuntu or CentOS system"
+ 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
- # We put everything in the client file
- cp /etc/openvpn/client-template.txt ~/$1.ovpn
- echo "" >> ~/$1.ovpn
- cat /etc/openvpn/easy-rsa/pki/ca.crt >> ~/$1.ovpn
- echo "" >> ~/$1.ovpn
- echo "" >> ~/$1.ovpn
- cat /etc/openvpn/easy-rsa/pki/issued/$1.crt >> ~/$1.ovpn
- echo "" >> ~/$1.ovpn
- echo "" >> ~/$1.ovpn
- cat /etc/openvpn/easy-rsa/pki/private/$1.key >> ~/$1.ovpn
- echo "" >> ~/$1.ovpn
- echo "" >> ~/$1.ovpn
- cat /etc/openvpn/tls-crypt.key >> ~/$1.ovpn
- echo "" >> ~/$1.ovpn
+ cp /etc/openvpn/client-template.txt $homeDir/$1.ovpn
+ echo "" >> $homeDir/$1.ovpn
+ cat /etc/openvpn/easy-rsa/pki/ca.crt >> $homeDir/$1.ovpn
+ echo "" >> $homeDir/$1.ovpn
+ echo "" >> $homeDir/$1.ovpn
+ cat /etc/openvpn/easy-rsa/pki/issued/$1.crt >> $homeDir/$1.ovpn
+ echo "" >> $homeDir/$1.ovpn
+ echo "" >> $homeDir/$1.ovpn
+ cat /etc/openvpn/easy-rsa/pki/private/$1.key >> $homeDir/$1.ovpn
+ echo "" >> $homeDir/$1.ovpn
+ #We verify if we used tls-crypt or tls-auth during the installation
+ TLS_SIG=$(cat /etc/openvpn/TLS_SIG)
+ if [[ $TLS_SIG == "1" ]]; then
+ echo "" >> ~/$1.ovpn
+ cat /etc/openvpn/tls-crypt.key >> ~/$1.ovpn
+ echo "" >> ~/$1.ovpn
+ elif [[ $TLS_SIG == "2" ]]; then
+ echo "key-direction 1" >> $homeDir/$1.ovpn
+ echo "" >> $homeDir/$1.ovpn
+ cat /etc/openvpn/tls-auth.key >> $homeDir/$1.ovpn
+ echo "" >> $homeDir/$1.ovpn
+ fi
}
# Try to get our IP from the system and fallback to the Internet.
@@ -75,6 +96,8 @@ IP=$(ip addr | grep 'inet' | grep -v inet6 | grep -vE '127\.[0-9]{1,3}\.[0-9]{1,
if [[ "$IP" = "" ]]; then
IP=$(wget -qO- ipv4.icanhazip.com)
fi
+# Get Internet network interface with default route
+NIC=$(ip -4 route ls | grep default | grep -Po '(?<=dev )(\S+)')
if [[ -e /etc/openvpn/server.conf ]]; then
while :
@@ -101,7 +124,7 @@ if [[ -e /etc/openvpn/server.conf ]]; then
# Generates the custom client.ovpn
newclient "$CLIENT"
echo ""
- echo "Client $CLIENT added, certs available at ~/$CLIENT.ovpn"
+ echo "Client $CLIENT added, certs available at $homeDir/$CLIENT.ovpn"
exit
;;
2)
@@ -128,6 +151,7 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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 $CLIENT revoked"
echo "Exiting..."
@@ -159,7 +183,9 @@ if [[ -e /etc/openvpn/server.conf ]]; then
fi
fi
if [[ "$OS" = 'debian' ]]; then
- apt-get remove --purge -y openvpn openvpn-blacklist
+ apt-get autoremove --purge -y openvpn
+ elif [[ "$OS" = 'arch' ]]; then
+ pacman -R openvpn --noconfirm
else
yum remove openvpn -y
fi
@@ -193,21 +219,260 @@ else
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 (slower)"
- while [[ $PROTOCOL != "UDP" && $PROTOCOL != "TCP" ]]; do
- read -p "Protocol [UDP/TCP]: " -e -i UDP PROTOCOL
+ echo "Unless UDP is blocked, you should not use TCP (unnecessarily slower)"
+ echo " 1) UDP (recommended)"
+ echo " 2) TCP"
+ while [[ $PROTOCOL != "1" && $PROTOCOL != "2" ]]; do
+ read -p "Protocol [1-2]: " -e -i 1 PROTOCOL
done
echo ""
echo "What DNS do you want to use with the VPN?"
- echo " 1) Current system resolvers (/etc/resolv.conf)"
+ echo " 1) Current system resolvers (in /etc/resolv.conf)"
echo " 2) FDN (France)"
echo " 3) DNS.WATCH (Germany)"
echo " 4) OpenDNS (Anycast: worldwide)"
echo " 5) Google (Anycast: worldwide)"
- while [[ $DNS != "1" && $DNS != "2" && $DNS != "3" && $DNS != "4" && $DNS != "5" ]]; do
- read -p "DNS [1-5]: " -e -i 2 DNS
+ echo " 6) Yandex Basic (Russia)"
+ while [[ $DNS != "1" && $DNS != "2" && $DNS != "3" && $DNS != "4" && $DNS != "5" && $DNS != "6" ]]; do
+ read -p "DNS [1-6]: " -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 proposed in this script."
+ echo "Please note that all the choices proposed are secure enough considering today's strandards, unlike some default OpenVPN options"
+ echo "You can just type "enter" if you don't know what to choose."
+ echo "Note that if you want to use an OpenVPN 2.3 client, You'll have to choose OpenVPN 2.3-compatible options."
+ echo "All OpenVPN 2.3-compatible choices are specified for each following option."
+ echo ""
+ echo "Choose which cipher you want to use for the data channel:"
+ echo " 1) AES-128-GCM (recommended)"
+ echo " 2) AES-192-GCM"
+ echo " 3) AES-256-GCM"
+ echo "Only use AES-CBC for OpenVPN 2.3 compatibilty"
+ echo " 4) AES-128-CBC"
+ echo " 5) AES-192-CBC"
+ echo " 6) AES-256-CBC"
+ while [[ $CIPHER != "1" && $CIPHER != "2" && $CIPHER != "3" && $CIPHER != "4" && $CIPHER != "5" && $CIPHER != "6" ]]; do
+ read -p "Data channel cipher [1-6]: " -e -i 1 CIPHER
+ done
+ case $CIPHER in
+ 1)
+ CIPHER="cipher AES-128-GCM"
+ ;;
+ 2)
+ CIPHER="cipher AES-192-GCM"
+ ;;
+ 3)
+ CIPHER="cipher AES-256-GCM"
+ ;;
+ 4)
+ CIPHER="cipher AES-128-CBC"
+ ;;
+ 5)
+ CIPHER="cipher AES-192-CBC"
+ ;;
+ 6)
+ CIPHER="cipher AES-256-CBC"
+ ;;
+ esac
+ echo ""
+ echo "Choose what kind of certificate you want to use:"
+ echo "Elleptic Curves keys (EC) are recommended, they're faster, lighter and more secure."
+ echo "Use RSA for OpenVPN 2.3 compatibilty"
+ echo " 1) ECDSA (recommended)"
+ echo " 2) RSA"
+ while [[ $CERT_TYPE != "1" && $CERT_TYPE != "2" ]]; do
+ read -p "Certificate type [1-2]: " -e -i 1 CERT_TYPE
+ done
+ case $CERT_TYPE in
+ 1)
+ echo ""
+ echo "Choose which curve you want to use for the EC key:"
+ echo " 1) secp256r1"
+ echo " 2) secp384r1 (recommended)"
+ echo " 3) secp521r1"
+ while [[ $CERT_CURVE != "1" && $CERT_CURVE != "2" && $CERT_CURVE != "3" ]]; do
+ read -p "Curve [1-3]: " -e -i 2 CERT_CURVE
+ done
+ case $CERT_CURVE in
+ 1)
+ CERT_CURVE="secp256r1"
+ ;;
+ 2)
+ CERT_CURVE="secp384r1"
+ ;;
+ 3)
+ CERT_CURVE="secp521r1"
+ ;;
+ esac
+ ;;
+ 2)
+ echo ""
+ echo "Choose which RSA key size you want to use:"
+ echo " 1) 2048 bits"
+ echo " 2) 3072 bits (recommended)"
+ echo " 3) 4096 bits"
+ while [[ $RSA_SIZE != "1" && $RSA_SIZE != "2" && $RSA_SIZE != "3" ]]; do
+ read -p "DH key size [1-3]: " -e -i 2 RSA_SIZE
+ done
+ case $RSA_SIZE in
+ 1)
+ RSA_SIZE="2048"
+ ;;
+ 2)
+ RSA_SIZE="3072"
+ ;;
+ 3)
+ RSA_SIZE="4096"
+ ;;
+ esac
+ ;;
+ esac
+ echo ""
+ echo "Choose which hash algorithm you want to use for the certificate:"
+ echo " 1) SHA-256"
+ echo " 2) SHA-384 (recommended)"
+ echo " 3) SHA-512"
+ while [[ $CERT_HASH != "1" && $CERT_HASH != "2" && $CERT_HASH != "3" ]]; do
+ read -p "Hash algorithm [1-3]: " -e -i 2 CERT_HASH
+ done
+ case $CERT_HASH in
+ 1)
+ CERT_HASH="sha256"
+ ;;
+ 2)
+ CERT_HASH="sha384"
+ ;;
+ 3)
+ CERT_HASH="sha512"
+ ;;
+ esac
+ echo ""
+ echo "Choose what kind of Diffie-Hellman key you want to use."
+ echo "Elleptic Curves (EC) are recommended, they're faster, lighter and more secure."
+ echo "Use DH for OpenVPN 2.3 compatibilty"
+ echo " 1) ECDH (recommended)"
+ echo " 2) DH"
+ while [[ $DH_TYPE != "1" && $DH_TYPE != "2" ]]; do
+ read -p "DH key type [1-2]: " -e -i 1 DH_TYPE
+ done
+ case $DH_TYPE in
+ 1)
+ echo ""
+ echo "Choose which curve you want to use for the ECDH key"
+ echo " 1) secp256r1"
+ echo " 2) secp384r1 (recommended)"
+ echo " 3) secp521r1"
+ while [[ $DH_CURVE != "1" && $DH_CURVE != "2" && $DH_CURVE != "3" ]]; do
+ read -p "Curve [1-3]: " -e -i 2 DH_CURVE
+ done
+ case $DH_CURVE in
+ 1)
+ DH_CURVE="secp256r1"
+ ;;
+ 2)
+ DH_CURVE="secp384r1"
+ ;;
+ 3)
+ DH_CURVE="secp521r1"
+ ;;
+ esac
+ ;;
+ 2)
+ echo""
+ echo "Choose which DH key size you want to use"
+ echo " 1) 2048 bits"
+ echo " 2) 3072 bits (recommended)"
+ echo " 3) 4096 bits"
+ while [[ $DH_SIZE != "1" && $DH_SIZE != "2" && $DH_SIZE != "3" ]]; do
+ read -p "DH key size [1-3]: " -e -i 2 DH_SIZE
+ done
+ case $DH_SIZE in
+ 1)
+ DH_SIZE="2048"
+ ;;
+ 2)
+ DH_SIZE="3072"
+ ;;
+ 3)
+ DH_SIZE="4096"
+ ;;
+ esac
+ ;;
+ esac
+ echo ""
+ echo "Choose which cipher you want to use for the control channel:"
+ if [[ "$CERT_TYPE" = '1' ]]; then
+ echo " 1) ECDHE-ECDSA-AES-256-GCM-SHA384 (recommended)"
+ echo " 2) ECDHE-ECDSA-AES-128-GCM-SHA256"
+ while [[ $CC_ENC != "1" && $CC_ENC != "2" ]]; do
+ read -p "Control channel cipher [1-2]: " -e -i 1 CC_ENC
+ done
+ case $CC_ENC in
+ 1)
+ CC_ENC="TLS-ECDHE-ECDSA-WITH-AES-256-GCM-SHA384"
+ ;;
+ 2)
+ CC_ENC="TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256"
+ ;;
+ esac
+ elif [[ "$CERT_TYPE" = '2' ]]; then
+ echo " 1) ECDHE-RSA-AES-256-GCM-SHA384 (recommended)"
+ echo " 2) ECDHE-RSA-AES-128-GCM-SHA256"
+ echo " 3) DHE-RSA-AES-128-GCM-SHA256"
+ while [[ $CC_ENC != "1" && $CC_ENC != "2" && $CC_ENC != "3" ]]; do
+ read -p "Control channel cipher [1-3]: " -e -i 1 CC_ENC
+ done
+ case $CC_ENC in
+ 1)
+ CC_ENC="TLS-ECDHE-RSA-WITH-AES-256-GCM-SHA384"
+ ;;
+ 2)
+ CC_ENC="TLS-ECDHE-RSA-WITH-AES-128-GCM-SHA256"
+ ;;
+ 3)
+ CC_ENC="TLS-DHE-RSA-WITH-AES-128-GCM-SHA256"
+ ;;
+ esac
+ fi
+ echo ""
+ echo "Do you want to use tls-crypt or tls-auth?"
+ echo "They both encrypt and authenticate all control channel packets with a key."
+ echo "tls-crypt is more advanced and secure than tls-auth, but it's an OpenVPN 2.4 feature."
+ echo " 1) tls-crypt (recommended)"
+ echo " 2) tls-auth (use only for OpenVPN 2.3 client compatibility)"
+ while [[ $TLS_SIG != "1" && $TLS_SIG != "2" ]]; do
+ read -p "Crontrol channel additional security layer [1-2]: " -e -i 1 TLS_SIG
+ done
+ echo""
+ if [[ $CIPHER = "cipher AES-256-GCM" ]] || [[ $CIPHER = "cipher AES-192-GCM" ]] || [[ $CIPHER = "cipher AES-128-GCM" ]]; then
+ echo "Choose which message digest algorithm you want to use for the tls-auth/tls-crypt control channel packets:"
+ elif [[ $CIPHER = "cipher AES-256-CBC" ]] || [[ $CIPHER = "cipher AES-192-CBC" ]] || [[ $CIPHER = "cipher AES-128-CBC" ]]; then
+ echo "Choose which message digest algorithm you want to use for the data channel packets"
+ echo "and the tls-auth/tls-crypt control channel packets:"
+ fi
+ echo " 1) SHA-224"
+ echo " 2) SHA-256"
+ echo " 3) SHA-384 (recommended)"
+ echo " 4) SHA-512"
+ while [[ $HMAC_AUTH != "1" && $HMAC_AUTH != "2" && $HMAC_AUTH != "3" && $HMAC_AUTH != "4" ]]; do
+ read -p "HMAC authentication algorithm [1-3]: " -e -i 2 HMAC_AUTH
+ done
+ case $HMAC_AUTH in
+ 1)
+ HMAC_AUTH="SHA224"
+ ;;
+ 2)
+ HMAC_AUTH="SHA256"
+ ;;
+ 3)
+ HMAC_AUTH="SHA384"
+ ;;
+ 4)
+ HMAC_AUTH="SHA512"
+ ;;
+ esac
+ echo ""
echo "Finally, tell me a name for the client certificate and configuration"
while [[ $CLIENT = "" ]]; do
echo "Please, use one word only, no special characters"
@@ -220,44 +485,76 @@ else
if [[ "$OS" = 'debian' ]]; then
apt-get install ca-certificates -y
# We add the OpenVPN repo to get the latest version.
- # Debian 7
- if [[ "$VERSION_ID" = 'VERSION_ID="7"' ]]; then
- echo "deb http://build.openvpn.net/debian/openvpn/release/2.4 wheezy main" > /etc/apt/sources.list.d/openvpn.list
- wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
- apt-get update
- fi
# Debian 8
if [[ "$VERSION_ID" = 'VERSION_ID="8"' ]]; then
- echo "deb http://build.openvpn.net/debian/openvpn/release/2.4 jessie main" > /etc/apt/sources.list.d/openvpn.list
+ 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 [[ "$VERSION_ID" = 'VERSION_ID="12.04"' ]]; then
- echo "deb http://build.openvpn.net/debian/openvpn/release/2.4 precise main" > /etc/apt/sources.list.d/openvpn.list
- wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
- apt-get update
- fi
# Ubuntu 14.04
- if [[ "$VERSION_ID" = 'VERSION_ID="14.04"' ]]; then
- echo "deb http://build.openvpn.net/debian/openvpn/release/2.4 trusty main" > /etc/apt/sources.list.d/openvpn.list
+ elif [[ "$VERSION_ID" = 'VERSION_ID="14.04"' ]]; then
+ echo "deb http://build.openvpn.net/debian/openvpn/stable trusty main" > /etc/apt/sources.list.d/openvpn.list
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
apt-get update
- fi
# Ubuntu 16.04
- if [[ "$VERSION_ID" = 'VERSION_ID="16.04"' ]]; then
- echo "deb http://build.openvpn.net/debian/openvpn/release/2.4 xenial main" > /etc/apt/sources.list.d/openvpn.list
+ elif [[ "$VERSION_ID" = 'VERSION_ID="16.04"' ]]; then
+ echo "deb http://build.openvpn.net/debian/openvpn/stable xenial main" > /etc/apt/sources.list.d/openvpn.list
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
apt-get update
fi
- # Then we install OpenVPN
+ # Ubuntu >= 17.04 and Debian > 9 have OpenVPN 2.4 without the need of a third party repository.
+ # The we install OpenVPN
+ apt-get update
apt-get install openvpn iptables openssl wget ca-certificates curl -y
- else
- # Else, the distro is CentOS
+ elif [[ "$OS" = 'centos' ]]; then
yum install epel-release -y
yum install openvpn iptables openssl wget ca-certificates curl -y
+ 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 rc.local
+ echo "[Unit]
+Description=/etc/rc.local compatibility
+
+[Service]
+Type=oneshot
+ExecStart=/etc/rc.local
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target" > /etc/systemd/system/rc-local.service
+ chmod +x /etc/rc.local
+ systemctl enable rc-local.service
+ if ! grep '#!' $RCLOCAL; then
+ echo "#!/bin/bash" > $RCLOCAL
+ fi
+ fi
+
+ # Install dependencies
+ pacman -Syu openvpn iptables openssl wget ca-certificates curl --needed --noconfirm
+ if [[ "$OS" = 'arch' ]]; then
+ touch /etc/iptables/iptables.rules # iptables won't start if this file does not exist
+ systemctl enable iptables
+ systemctl start iptables
+ fi
fi
-
+
+ #To remember if we use tls-crypt or tls-auth when generating a new client conf
+ echo $TLS_SIG > /etc/openvpn/TLS_SIG
+
# Find out if the machine uses nogroup or nobody for the permissionless group
if grep -qs "^nogroup:" /etc/group; then
NOGROUP=nogroup
@@ -270,34 +567,49 @@ else
rm -rf /etc/openvpn/easy-rsa/
fi
# Get easy-rsa
- wget -O ~/EasyRSA-3.0.1.tgz https://github.com/OpenVPN/easy-rsa/releases/download/3.0.1/EasyRSA-3.0.1.tgz
- tar xzf ~/EasyRSA-3.0.1.tgz -C ~/
- mv ~/EasyRSA-3.0.1/ /etc/openvpn/
- mv /etc/openvpn/EasyRSA-3.0.1/ /etc/openvpn/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-3.0.1.tgz
+ rm -rf ~/EasyRSA-3.0.3.tgz
cd /etc/openvpn/easy-rsa/
- echo 'set_var EASYRSA_ALGO ec
-set_var EASYRSA_CURVE sect571r1
-set_var EASYRSA_DIGEST "sha512"' > vars
+ if [[ $CERT_TYPE == "1" ]]; then
+ echo "set_var EASYRSA_ALGO ec
+set_var EASYRSA_CURVE $CERT_CURVE" > vars
+ elif [[ $CERT_TYPE == "2" ]]; then
+ echo "set_var EASYRSA_KEY_SIZE $RSA_SIZE" > vars
+ fi
+ echo 'set_var EASYRSA_DIGEST "'$CERT_HASH'"' >> vars
# Create the PKI, set up the CA, the DH params and the server + client certificates
./easyrsa init-pki
./easyrsa --batch build-ca nopass
+ if [[ $DH_TYPE == "2" ]]; then
+ openssl dhparam -out dh.pem $DH_SIZE
+ fi
./easyrsa build-server-full server nopass
./easyrsa build-client-full $CLIENT nopass
./easyrsa gen-crl
- # Generate tls-crypt key
- openvpn --genkey --secret /etc/openvpn/tls-crypt.key
+ if [[ $TLS_SIG == "1" ]]; then
+ # Generate tls-crypt key
+ openvpn --genkey --secret /etc/openvpn/tls-crypt.key
+ elif [[ $TLS_SIG == "2" ]]; then
+ # Generate tls-auth key
+ openvpn --genkey --secret /etc/openvpn/tls-auth.key
+ fi
# Move all the generated files
cp pki/ca.crt pki/private/ca.key pki/issued/server.crt pki/private/server.key /etc/openvpn/easy-rsa/pki/crl.pem /etc/openvpn
+ if [[ $DH_TYPE == "2" ]]; then
+ cp dh.pem /etc/openvpn
+ fi
# 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
+ if [[ "$PROTOCOL" = '1' ]]; then
echo "proto udp" >> /etc/openvpn/server.conf
- elif [[ "$PROTOCOL" = 'TCP' ]]; then
+ elif [[ "$PROTOCOL" = '2' ]]; then
echo "proto tcp" >> /etc/openvpn/server.conf
fi
echo "dev tun
@@ -333,46 +645,65 @@ ifconfig-pool-persist ipp.txt" >> /etc/openvpn/server.conf
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
;;
+ 6) #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
+ ;;
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-crypt tls-crypt.key 0
-dh none
-ecdh-curve sect571r1
-auth SHA512
-cipher AES-256-GCM
+key server.key" >> /etc/openvpn/server.conf
+if [[ $TLS_SIG == "1" ]]; then
+ echo "tls-crypt tls-crypt.key 0" >> /etc/openvpn/server.conf
+elif [[ $TLS_SIG == "2" ]]; then
+ echo "tls-auth tls-auth.key 0" >> /etc/openvpn/server.conf
+fi
+if [[ $DH_TYPE == "1" ]]; then
+ echo "dh none
+ecdh-curve $DH_CURVE" >> /etc/openvpn/server.conf
+elif [[ $DH_TYPE == "2" ]]; then
+ echo "dh dh.pem" >> /etc/openvpn/server.conf
+fi
+echo "auth $HMAC_AUTH
+$CIPHER
+ncp-disable
tls-server
tls-version-min 1.2
-tls-cipher TLS-ECDHE-ECDSA-WITH-AES-256-GCM-SHA384
+tls-cipher $CC_ENC
status openvpn.log
verb 3" >> /etc/openvpn/server.conf
# Create the sysctl configuration file if needed (mainly for Arch Linux)
- if [[ ! -e /etc/sysctl.conf ]]; then
- touch /etc/sysctl.conf
+ if [[ ! -e $SYSCTL ]]; then
+ touch $SYSCTL
fi
# Enable net.ipv4.ip_forward for the system
- sed -i '/\/c\net.ipv4.ip_forward=1' /etc/sysctl.conf
- if ! grep -q "\" /etc/sysctl.conf; then
- echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf
+ sed -i '/\/c\net.ipv4.ip_forward=1' $SYSCTL
+ if ! grep -q "\" $SYSCTL; then
+ echo 'net.ipv4.ip_forward=1' >> $SYSCTL
fi
# Avoid an unneeded reboot
echo 1 > /proc/sys/net/ipv4/ip_forward
+ # Needed to use rc.local with some systemd distros
+ if [[ "$OS" = 'debian' && ! -e $RCLOCAL ]]; then
+ echo '#!/bin/sh -e
+ exit 0' > $RCLOCAL
+ fi
+ chmod +x $RCLOCAL
# Set NAT for the VPN subnet
- iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to $IP
- sed -i "1 a\iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to $IP" $RCLOCAL
+ iptables -t nat -A POSTROUTING -o $NIC -s 10.8.0.0/24 -j MASQUERADE
+ sed -i "1 a\iptables -t nat -A POSTROUTING -o $NIC -s 10.8.0.0/24 -j MASQUERADE" $RCLOCAL
if pgrep firewalld; then
# We don't use --add-service=openvpn because that would only work with
# the default port. Using both permanent and not permanent rules to
# avoid a firewalld reload.
- if [[ "$PROTOCOL" = 'UDP' ]]; then
+ if [[ "$PROTOCOL" = '1' ]]; then
firewall-cmd --zone=public --add-port=$PORT/udp
firewall-cmd --permanent --zone=public --add-port=$PORT/udp
- elif [[ "$PROTOCOL" = 'TCP' ]]; then
+ elif [[ "$PROTOCOL" = '2' ]]; then
firewall-cmd --zone=public --add-port=$PORT/tcp
firewall-cmd --permanent --zone=public --add-port=$PORT/tcp
fi
@@ -383,16 +714,16 @@ verb 3" >> /etc/openvpn/server.conf
# If iptables has at least one REJECT rule, we asume this is needed.
# Not the best approach but I can't think of other and this shouldn't
# cause problems.
- if [[ "$PROTOCOL" = 'UDP' ]]; then
+ if [[ "$PROTOCOL" = '1' ]]; then
iptables -I INPUT -p udp --dport $PORT -j ACCEPT
- elif [[ "$PROTOCOL" = 'TCP' ]]; then
+ elif [[ "$PROTOCOL" = '2' ]]; then
iptables -I INPUT -p tcp --dport $PORT -j ACCEPT
fi
iptables -I FORWARD -s 10.8.0.0/24 -j ACCEPT
iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
- if [[ "$PROTOCOL" = 'UDP' ]]; then
+ if [[ "$PROTOCOL" = '1' ]]; then
sed -i "1 a\iptables -I INPUT -p udp --dport $PORT -j ACCEPT" $RCLOCAL
- elif [[ "$PROTOCOL" = 'TCP' ]]; then
+ elif [[ "$PROTOCOL" = '2' ]]; then
sed -i "1 a\iptables -I INPUT -p tcp --dport $PORT -j ACCEPT" $RCLOCAL
fi
sed -i "1 a\iptables -I FORWARD -s 10.8.0.0/24 -j ACCEPT" $RCLOCAL
@@ -406,9 +737,9 @@ verb 3" >> /etc/openvpn/server.conf
if ! hash semanage 2>/dev/null; then
yum install policycoreutils-python -y
fi
- if [[ "$PROTOCOL" = 'UDP' ]]; then
+ if [[ "$PROTOCOL" = '1' ]]; then
semanage port -a -t openvpn_port_t -p udp $PORT
- elif [[ "$PROTOCOL" = 'TCP' ]]; then
+ elif [[ "$PROTOCOL" = '2' ]]; then
semanage port -a -t openvpn_port_t -p tcp $PORT
fi
fi
@@ -418,14 +749,33 @@ verb 3" >> /etc/openvpn/server.conf
if [[ "$OS" = 'debian' ]]; then
# Little hack to check for systemd
if pgrep systemd-journal; then
- systemctl restart openvpn@server.service
+ if [[ "$VERSION_ID" = 'VERSION_ID="9"' ]]; then
+ #Workaround to fix OpenVPN service on Debian 9 OpenVZ
+ sed -i 's|LimitNPROC|#LimitNPROC|' /lib/systemd/system/openvpn-server\@.service
+ sed -i 's|/etc/openvpn/server|/etc/openvpn|' /lib/systemd/system/openvpn-server\@.service
+ sed -i 's|%i.conf|server.conf|' /lib/systemd/system/openvpn-server\@.service
+ systemctl daemon-reload
+ systemctl restart openvpn-server@openvpn.service
+ systemctl enable openvpn-server@openvpn.service
+ else
+ systemctl restart openvpn@server.service
+ fi
else
/etc/init.d/openvpn restart
fi
else
if pgrep systemd-journal; then
- systemctl restart openvpn@server.service
- systemctl enable openvpn@server.service
+ if [[ "$OS" = 'arch' ]]; then
+ #Workaround to avoid rewriting the entire script for Arch
+ 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
@@ -447,9 +797,9 @@ verb 3" >> /etc/openvpn/server.conf
fi
# client-template.txt is created so we have a template to add further users later
echo "client" > /etc/openvpn/client-template.txt
- if [[ "$PROTOCOL" = 'UDP' ]]; then
+ if [[ "$PROTOCOL" = '1' ]]; then
echo "proto udp" >> /etc/openvpn/client-template.txt
- elif [[ "$PROTOCOL" = 'TCP' ]]; then
+ elif [[ "$PROTOCOL" = '2' ]]; then
echo "proto tcp-client" >> /etc/openvpn/client-template.txt
fi
echo "remote $IP $PORT
@@ -459,11 +809,11 @@ nobind
persist-key
persist-tun
remote-cert-tls server
-auth SHA512
-cipher AES-256-GCM
+auth $HMAC_AUTH
+$CIPHER
tls-client
tls-version-min 1.2
-tls-cipher TLS-ECDHE-ECDSA-WITH-AES-256-GCM-SHA384
+tls-cipher $CC_ENC
setenv opt block-outside-dns
verb 3" >> /etc/openvpn/client-template.txt
@@ -472,7 +822,7 @@ verb 3" >> /etc/openvpn/client-template.txt
echo ""
echo "Finished!"
echo ""
- echo "Your client config is available at ~/$CLIENT.ovpn"
+ 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;