mirror of
https://github.com/Nyr/openvpn-install.git
synced 2025-04-05 13:43:30 +03:00
Merge 6e6f5c3f7b into e58addc2c5
This commit is contained in:
Julien Reichardt
commit
1b9593460d
2 changed files with 105 additions and 97 deletions
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@ -6,7 +6,7 @@ This script will let you setup your own VPN server in no more than a minute, eve
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###Installation
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Run the script and follow the assistant:
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`wget git.io/vpn --no-check-certificate -O openvpn-install.sh && bash openvpn-install.sh`
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`wget git.io/vpn --no-check-certificate -O openvpn-install.sh && sh openvpn-install.sh`
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Once it ends, you can run it again to add more users, remove some of them or even completely uninstall OpenVPN.
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@ -17,4 +17,4 @@ If you don't care about sharing an IP address with more people, check out the aw
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###Donations
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If you want to show your appreciation, you can donate via [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=VBAYDL34Z7J6L) or [Bitcoin](https://www.coinbase.com/Nyr). Thanks!
|
||||
If you want to show your appreciation, you can donate via [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=VBAYDL34Z7J6L) or [Bitcoin](https://www.coinbase.com/Nyr). Thanks!
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@ -1,34 +1,40 @@
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#!/bin/bash
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#!/bin/sh
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# OpenVPN road warrior installer for Debian, Ubuntu and CentOS
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# This script will work on Debian, Ubuntu, CentOS and probably other distros
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# of the same families, although no support is offered for them. It isn't
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# bulletproof but it will probably work if you simply want to setup a VPN on
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# your Debian/Ubuntu/CentOS box. It has been designed to be as unobtrusive and
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# universal as possible.
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# This script is implemented as POSIX-compliant.
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# It should work on sh, dash, bash, ksh, zsh on Debian, Ubuntu, CentOS
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# and probably other distros of the same families,
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# although no support is offered for them. It isn't bulletproof but
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# it will probably work if you simply want to setup a VPN on
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# your Debian/Ubuntu/CentOS box. It has been designed to be
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# as unobtrusive and universal as possible.
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if [[ "$EUID" -ne 0 ]]; then
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if [ "$(id -u)" != "0" ]
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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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if [ ! -e /dev/net/tun ]
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then
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echo "TUN/TAP 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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if grep -qs "CentOS release 5" "/etc/redhat-release"
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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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if [[ -e /etc/debian_version ]]; then
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if [ -e /etc/debian_version ]
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then
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OS=debian
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RCLOCAL='/etc/rc.local'
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elif [[ -e /etc/centos-release || -e /etc/redhat-release ]]; then
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elif [ -e /etc/centos-release || -e /etc/redhat-release ]
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then
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OS=centos
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RCLOCAL='/etc/rc.d/rc.local'
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# Needed for CentOS 7
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@ -38,7 +44,18 @@ else
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exit 4
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fi
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newclient () {
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# Detect the init system
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# Return the PID of systemd if running
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pidof /sbin/init && INITSYS=sysvinit
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# Return the PID of systemd if running
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pidof systemd && INITSYS=systemd
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if [ "$INITSYS" = "" ]
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then
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echo "Your init system isn't supported"
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exit 5
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fi
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newclient() {
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# Generates the custom client.ovpn
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cp /etc/openvpn/client-common.txt ~/$1.ovpn
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echo "<ca>" >> ~/$1.ovpn
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@ -52,17 +69,16 @@ newclient () {
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echo "</key>" >> ~/$1.ovpn
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}
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# Try to get our IP from the system and fallback to the Internet.
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# I do this to make the script compatible with NATed servers (lowendspirit.com)
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# and to avoid getting an IPv6.
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IP=$(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)
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if [[ "$IP" = "" ]]; then
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IP=$(wget -qO- ipv4.icanhazip.com)
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if [ "$IP" = "" ]
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then IP=$(wget -qO- ipv4.icanhazip.com)
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fi
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if [[ -e /etc/openvpn/server.conf ]]; then
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if [ -e /etc/openvpn/server.conf ]
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then
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while :
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do
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clear
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@ -75,24 +91,25 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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echo " 4) Exit"
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read -p "Select an option [1-4]: " option
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case $option in
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1)
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1)
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echo ""
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echo "Tell me a name for the client cert"
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echo "Please, use one word only, no special characters"
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read -p "Client name: " -e -i client CLIENT
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read -p "Client name: client " CLIENT
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CLIENT=${CLIENT:-client}
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cd /etc/openvpn/easy-rsa/
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./easyrsa build-client-full $CLIENT nopass
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# Generates the custom client.ovpn
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newclient "$CLIENT"
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echo ""
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echo "Client $CLIENT added, certs available at ~/$CLIENT.ovpn"
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exit
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;;
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exit;;
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2)
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# This option could be documented a bit better and maybe even be simplimplified
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# ...but what can I say, I want some sleep too
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NUMBEROFCLIENTS=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep -c "^V")
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if [[ "$NUMBEROFCLIENTS" = '0' ]]; then
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if [ "$NUMBEROFCLIENTS" = 0 ]
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then
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echo ""
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echo "You have no existing clients!"
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exit 5
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@ -100,8 +117,8 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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echo ""
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echo "Select the existing client certificate you want to revoke"
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tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep "^V" | cut -d '=' -f 2 | nl -s ') '
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if [[ "$NUMBEROFCLIENTS" = '1' ]]; then
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read -p "Select one client [1]: " CLIENTNUMBER
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if [ "$NUMBEROFCLIENTS" = 1 ]
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then read -p "Select one client [1]: " CLIENTNUMBER
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else
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read -p "Select one client [1-$NUMBEROFCLIENTS]: " CLIENTNUMBER
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fi
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@ -110,39 +127,35 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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./easyrsa --batch revoke $CLIENT
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./easyrsa gen-crl
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# And restart
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if pgrep systemd-journal; then
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systemctl restart openvpn@server.service
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if [ $INITSYS = systemd ]
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then systemctl restart openvpn@server.service
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else
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if [[ "$OS" = 'debian' ]]; then
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/etc/init.d/openvpn restart
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else
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service openvpn restart
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fi
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service openvpn restart
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fi
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echo ""
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echo "Certificate for client $CLIENT revoked"
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exit
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;;
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3)
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exit;;
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3)
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echo ""
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read -p "Do you really want to remove OpenVPN? [y/n]: " -e -i n REMOVE
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if [[ "$REMOVE" = 'y' ]]; then
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PORT=$(grep '^port ' /etc/openvpn/server.conf | cut -d " " -f 2)
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if pgrep firewalld; then
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# Using both permanent and not permanent rules to avoid a firewalld reload.
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read -p "Do you really want to remove OpenVPN? [N/y]: " REMOVE
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if [ $REMOVE = y ]
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then PORT=$(grep '^port ' /etc/openvpn/server.conf | cut -d " " -f 2)
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if pgrep firewalld
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then # Using both permanent and not permanent rules to avoid a firewalld reload.
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firewall-cmd --zone=public --remove-port=$PORT/udp
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firewall-cmd --zone=trusted --remove-source=10.8.0.0/24
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firewall-cmd --permanent --zone=public --remove-port=$PORT/udp
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firewall-cmd --permanent --zone=trusted --remove-source=10.8.0.0/24
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fi
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if iptables -L | grep -qE 'REJECT|DROP'; then
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if iptables -L | grep -qE 'REJECT|DROP'
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then
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sed -i "/iptables -I INPUT -p udp --dport $PORT -j ACCEPT/d" $RCLOCAL
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sed -i "/iptables -I FORWARD -s 10.8.0.0\/24 -j ACCEPT/d" $RCLOCAL
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sed -i "/iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT/d" $RCLOCAL
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fi
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sed -i '/iptables -t nat -A POSTROUTING -s 10.8.0.0\/24 -j SNAT --to /d' $RCLOCAL
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if [[ "$OS" = 'debian' ]]; then
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apt-get remove --purge -y openvpn openvpn-blacklist
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if [ $OS = debian ]
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then apt-get remove --purge -y openvpn openvpn-blacklist
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else
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yum remove openvpn -y
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fi
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@ -154,8 +167,7 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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echo ""
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echo "Removal aborted!"
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fi
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exit
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;;
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exit;;
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4) exit;;
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esac
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done
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@ -169,10 +181,12 @@ else
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echo ""
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echo "First I need to know the IPv4 address of the network interface you want OpenVPN"
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echo "listening to."
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read -p "IP address: " -e -i $IP IP
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read -p "IP address: $IP " IP
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IP=${IP:-$IP}
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echo ""
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echo "What port do you want for OpenVPN?"
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read -p "Port: " -e -i 1194 PORT
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read -p "Port: 1194 " PORT
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PORT=${PORT:-1194}
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echo ""
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echo "What DNS do you want to use with the VPN?"
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echo " 1) Current system resolvers"
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@ -181,15 +195,19 @@ else
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echo " 4) NTT"
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echo " 5) Hurricane Electric"
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echo " 6) Google"
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read -p "DNS [1-6]: " -e -i 1 DNS
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read -p "DNS [1-6]: 1 " DNS
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DNS=${DNS:-1}
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echo ""
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echo "Finally, tell me your name for the client cert"
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echo "Please, use one word only, no special characters"
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read -p "Client name: " -e -i client CLIENT
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read -p "Client name: client " CLIENT
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CLIENT=${CLIENT:-client}
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echo ""
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echo "Okay, that was all I needed. We are ready to setup your OpenVPN server now"
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read -n1 -r -p "Press any key to continue..."
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if [[ "$OS" = 'debian' ]]; then
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echo "Press [ENTER] to continue... \c "
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read
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if [ $OS = debian ]
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then
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apt-get update
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apt-get install openvpn iptables openssl ca-certificates -y
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else
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@ -198,8 +216,8 @@ else
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yum install openvpn iptables openssl wget ca-certificates -y
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fi
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# An old version of easy-rsa was available by default in some openvpn packages
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if [[ -d /etc/openvpn/easy-rsa/ ]]; then
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rm -rf /etc/openvpn/easy-rsa/
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if [ -d /etc/openvpn/easy-rsa/ ]
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then rm -rf /etc/openvpn/easy-rsa/
|
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fi
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# Get easy-rsa
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wget -O ~/EasyRSA-3.0.1.tgz https://github.com/OpenVPN/easy-rsa/releases/download/3.0.1/EasyRSA-3.0.1.tgz
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|
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@ -234,31 +252,26 @@ ifconfig-pool-persist ipp.txt" > /etc/openvpn/server.conf
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echo 'push "redirect-gateway def1 bypass-dhcp"' >> /etc/openvpn/server.conf
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# DNS
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case $DNS in
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1)
|
||||
1)
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# Obtain the resolvers from resolv.conf and use them for OpenVPN
|
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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
|
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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
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||||
do
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||||
echo "push \"dhcp-option DNS $line\"" >> /etc/openvpn/server.conf
|
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done
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||||
;;
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done;;
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2)
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echo 'push "dhcp-option DNS 208.67.222.222"' >> /etc/openvpn/server.conf
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||||
echo 'push "dhcp-option DNS 208.67.220.220"' >> /etc/openvpn/server.conf
|
||||
;;
|
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3)
|
||||
echo 'push "dhcp-option DNS 208.67.220.220"' >> /etc/openvpn/server.conf;;
|
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3)
|
||||
echo 'push "dhcp-option DNS 4.2.2.2"' >> /etc/openvpn/server.conf
|
||||
echo 'push "dhcp-option DNS 4.2.2.4"' >> /etc/openvpn/server.conf
|
||||
;;
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4)
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echo 'push "dhcp-option DNS 4.2.2.4"' >> /etc/openvpn/server.conf;;
|
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4)
|
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echo 'push "dhcp-option DNS 129.250.35.250"' >> /etc/openvpn/server.conf
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echo 'push "dhcp-option DNS 129.250.35.251"' >> /etc/openvpn/server.conf
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;;
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5)
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echo 'push "dhcp-option DNS 74.82.42.42"' >> /etc/openvpn/server.conf
|
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;;
|
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6)
|
||||
echo 'push "dhcp-option DNS 129.250.35.251"' >> /etc/openvpn/server.conf;;
|
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5)
|
||||
echo 'push "dhcp-option DNS 74.82.42.42"' >> /etc/openvpn/server.conf;;
|
||||
6)
|
||||
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
|
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;;
|
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echo 'push "dhcp-option DNS 8.8.4.4"' >> /etc/openvpn/server.conf;;
|
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esac
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echo "keepalive 10 120
|
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comp-lzo
|
||||
|
|
@ -268,14 +281,14 @@ status openvpn-status.log
|
|||
verb 3
|
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crl-verify /etc/openvpn/easy-rsa/pki/crl.pem" >> /etc/openvpn/server.conf
|
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# Enable net.ipv4.ip_forward for the system
|
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if [[ "$OS" = 'debian' ]]; then
|
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sed -i 's|#net.ipv4.ip_forward=1|net.ipv4.ip_forward=1|' /etc/sysctl.conf
|
||||
if [ $OS = debian ]
|
||||
then sed -i 's|#net.ipv4.ip_forward=1|net.ipv4.ip_forward=1|' /etc/sysctl.conf
|
||||
else
|
||||
# CentOS 5 and 6
|
||||
sed -i 's|net.ipv4.ip_forward = 0|net.ipv4.ip_forward = 1|' /etc/sysctl.conf
|
||||
# CentOS 7
|
||||
if ! grep -q "net.ipv4.ip_forward=1" "/etc/sysctl.conf"; then
|
||||
echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf
|
||||
if ! grep -q "net.ipv4.ip_forward=1" "/etc/sysctl.conf"
|
||||
then echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf
|
||||
fi
|
||||
fi
|
||||
# Avoid an unneeded reboot
|
||||
|
|
@ -283,7 +296,8 @@ crl-verify /etc/openvpn/easy-rsa/pki/crl.pem" >> /etc/openvpn/server.conf
|
|||
# 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" $RCLOCAL
|
||||
if pgrep firewalld; then
|
||||
if pgrep firewalld
|
||||
then
|
||||
# We don't use --add-service=openvpn because that would only work with
|
||||
# the default port. Using both permanent and not permanent rules to
|
||||
# avoid a firewalld reload.
|
||||
|
|
@ -292,7 +306,8 @@ crl-verify /etc/openvpn/easy-rsa/pki/crl.pem" >> /etc/openvpn/server.conf
|
|||
firewall-cmd --permanent --zone=public --add-port=$PORT/udp
|
||||
firewall-cmd --permanent --zone=trusted --add-source=10.8.0.0/24
|
||||
fi
|
||||
if iptables -L | grep -qE 'REJECT|DROP'; then
|
||||
if iptables -L | 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.
|
||||
|
|
@ -304,33 +319,26 @@ crl-verify /etc/openvpn/easy-rsa/pki/crl.pem" >> /etc/openvpn/server.conf
|
|||
sed -i "1 a\iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" $RCLOCAL
|
||||
fi
|
||||
# And finally, restart OpenVPN
|
||||
if [[ "$OS" = 'debian' ]]; then
|
||||
# Little hack to check for systemd
|
||||
if pgrep systemd-journal; then
|
||||
systemctl restart openvpn@server.service
|
||||
else
|
||||
/etc/init.d/openvpn restart
|
||||
fi
|
||||
if [ $INITSYS = systemd ]
|
||||
then
|
||||
systemctl restart openvpn@server.service
|
||||
systemctl enable openvpn@server.service
|
||||
else
|
||||
if pgrep systemd-journal; then
|
||||
systemctl restart openvpn@server.service
|
||||
systemctl enable openvpn@server.service
|
||||
else
|
||||
service openvpn restart
|
||||
chkconfig openvpn on
|
||||
fi
|
||||
service openvpn restart
|
||||
chkconfig openvpn on
|
||||
fi
|
||||
# Try to detect a NATed connection and ask about it to potential LowEndSpirit users
|
||||
EXTERNALIP=$(wget -qO- ipv4.icanhazip.com)
|
||||
if [[ "$IP" != "$EXTERNALIP" ]]; then
|
||||
if [ $IP != "$EXTERNALIP" ]
|
||||
then
|
||||
echo ""
|
||||
echo "Looks like your server is behind a NAT!"
|
||||
echo ""
|
||||
echo "If your server is NATed (LowEndSpirit), I need to know the external IP"
|
||||
echo "If that's not the case, just ignore this and leave the next field blank"
|
||||
read -p "External IP: " -e USEREXTERNALIP
|
||||
if [[ "$USEREXTERNALIP" != "" ]]; then
|
||||
IP=$USEREXTERNALIP
|
||||
read -p "External IP: " USEREXTERNALIP
|
||||
if [ "$USEREXTERNALIP" != "" ]
|
||||
then echo IP=$USEREXTERNALIP
|
||||
fi
|
||||
fi
|
||||
# client-common.txt is created so we have a template to add further users later
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue