From 8f764e2fbc210c2f32f2a8f23a3a6b807f29e58a Mon Sep 17 00:00:00 2001 From: simono41 Date: Thu, 12 Oct 2017 01:05:30 +0200 Subject: [PATCH] new-vpn-scripts --- .../openvpn-install.sh | 15 +- .../openvpn-install.sh | 30 +- openvpn-install.sh | 849 ------------------ 3 files changed, 22 insertions(+), 872 deletions(-) rename openvpn-install-stable.sh => Angristan/openvpn-install.sh (98%) mode change 100755 => 100644 rename openvpn-install_custom.sh => Nyr/openvpn-install.sh (94%) mode change 100755 => 100644 delete mode 100755 openvpn-install.sh diff --git a/openvpn-install-stable.sh b/Angristan/openvpn-install.sh old mode 100755 new mode 100644 similarity index 98% rename from openvpn-install-stable.sh rename to Angristan/openvpn-install.sh index e8f7a11..9c92191 --- a/openvpn-install-stable.sh +++ b/Angristan/openvpn-install.sh @@ -89,7 +89,7 @@ if [[ "$IP" = "" ]]; then IP=$(wget -qO- ipv4.icanhazip.com) fi # Get Internet network interface with default route -NIC=$(ip -4 route ls | grep default -m 1 | grep -Po '(?<=dev )(\S+)') +NIC=$(ip -4 route ls | grep default | grep -Po '(?<=dev )(\S+)') if [[ -e /etc/openvpn/server.conf ]]; then while : @@ -137,7 +137,7 @@ if [[ -e /etc/openvpn/server.conf ]]; then 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 $CLIENT - ./easyrsa gen-crl + EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl rm -rf pki/reqs/$CLIENT.req rm -rf pki/private/$CLIENT.key rm -rf pki/issued/$CLIENT.crt @@ -223,8 +223,9 @@ else echo " 4) OpenDNS (Anycast: worldwide)" echo " 5) Google (Anycast: worldwide)" 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 + echo " 7) AdGuard DNS (Russia)" + while [[ $DNS != "1" && $DNS != "2" && $DNS != "3" && $DNS != "4" && $DNS != "5" && $DNS != "6" && $DNS != "7" ]]; do + read -p "DNS [1-7]: " -e -i 1 DNS done echo "" echo "See https://github.com/Angristan/OpenVPN-install#encryption to learn more about " @@ -418,7 +419,7 @@ WantedBy=multi-user.target" > /etc/systemd/system/rc-local.service openssl dhparam -out dh.pem $DH_KEY_SIZE ./easyrsa build-server-full server nopass ./easyrsa build-client-full $CLIENT nopass - ./easyrsa gen-crl + EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl # generate tls-auth key openvpn --genkey --secret /etc/openvpn/tls-auth.key # Move all the generated files @@ -471,6 +472,10 @@ ifconfig-pool-persist ipp.txt" >> /etc/openvpn/server.conf 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 ;; + 7) #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 diff --git a/openvpn-install_custom.sh b/Nyr/openvpn-install.sh old mode 100755 new mode 100644 similarity index 94% rename from openvpn-install_custom.sh rename to Nyr/openvpn-install.sh index 4f47bf1..1e3fbf1 --- a/openvpn-install_custom.sh +++ b/Nyr/openvpn-install.sh @@ -7,7 +7,6 @@ # your Debian/Ubuntu/CentOS box. It has been designed to be as unobtrusive and # universal as possible. -# From wget https://git.io/vpn -O openvpn-install.sh # Detect Debian users running the script with "sh" instead of bash if readlink /proc/$$/exe | grep -qs "dash"; then @@ -114,7 +113,7 @@ if [[ -e /etc/openvpn/server.conf ]]; then 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 $CLIENT - ./easyrsa gen-crl + EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl rm -rf pki/reqs/$CLIENT.req rm -rf pki/private/$CLIENT.key rm -rf pki/issued/$CLIENT.crt @@ -234,12 +233,15 @@ 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 ~/ + # Temporal fix for issue #353, which is caused by OpenVPN/easy-rsa#135 + # Will be removed as soon as a new release of easy-rsa is available + sed -i 's/\[\[/\[/g;s/\]\]/\]/g;s/==/=/g' ~/EasyRSA-3.0.3/easyrsa + 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/ # Create the PKI, set up the CA, the DH params and the server + client certificates ./easyrsa init-pki @@ -247,7 +249,7 @@ else ./easyrsa gen-dh ./easyrsa build-server-full server nopass ./easyrsa build-client-full $CLIENT nopass - ./easyrsa gen-crl + EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl # Move the stuff we need cp pki/ca.crt pki/private/ca.key pki/dh.pem pki/issued/server.crt pki/private/server.key pki/crl.pem /etc/openvpn # CRL is read with each client connection, when OpenVPN is dropped to nobody @@ -269,9 +271,7 @@ tls-auth ta.key 0 topology subnet server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt" > /etc/openvpn/server.conf - echo 'push "route 10.8.0.0 255.255.255.0"' >> /etc/openvpn/server.conf echo 'push "redirect-gateway def1 bypass-dhcp"' >> /etc/openvpn/server.conf - echo 'push "route 0.0.0.0 0.0.0.0"' >> /etc/openvpn/server.conf # DNS case $DNS in 1) @@ -300,8 +300,7 @@ ifconfig-pool-persist ipp.txt" > /etc/openvpn/server.conf echo 'push "dhcp-option DNS 64.6.65.6"' >> /etc/openvpn/server.conf ;; esac - echo "client-to-client -keepalive 10 120 + echo "keepalive 10 120 cipher AES-256-CBC comp-lzo user nobody @@ -309,20 +308,15 @@ group $GROUPNAME persist-key persist-tun status openvpn-status.log -log-append openvpn.log verb 3 crl-verify crl.pem" >> /etc/openvpn/server.conf # Enable net.ipv4.ip_forward for the system - sysctl -w net/ipv4/ip_forward=1 sed -i '/\/c\net.ipv4.ip_forward=1' /etc/sysctl.conf if ! grep -q "\" /etc/sysctl.conf; then echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf fi # Avoid an unneeded reboot - # initialize natting for openvpn - iptables -t nat -F POSTROUTING echo 1 > /proc/sys/net/ipv4/ip_forward - iptables -t nat -A POSTROUTING -o eth0 -s 10.8.0.0/24 -j MASQUERADE if pgrep firewalld; then # Using both permanent and not permanent rules to avoid a firewalld # reload. @@ -424,4 +418,4 @@ verb 3" > /etc/openvpn/client-common.txt echo "" echo "Your client configuration is available at" ~/"$CLIENT.ovpn" echo "If you want to add more clients, you simply need to run this script again!" -fi +fi \ No newline at end of file diff --git a/openvpn-install.sh b/openvpn-install.sh deleted file mode 100755 index 2f2bf2c..0000000 --- a/openvpn-install.sh +++ /dev/null @@ -1,849 +0,0 @@ -#!/bin/bash - -set -ex - -# 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") - RCLOCAL='/etc/rc.local' - 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 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 ]]; 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, CentOS or ArchLinux system" - exit 4 -fi - -newclient () { - # Where to write the custom client.ovpn? - if [ ${SUDO_USER} ]; then # if not, use SUDO_USER - homeDir="/home/${SUDO_USER}" - else # if not SUDO_USER, use /root - homeDir="/root" - fi - # Generates the custom client.ovpn - 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/$1.ovpn - fi -} - -# Try to get our IP from the system and fallback to the Internet. -# I do this to make the script compatible with NATed servers (LowEndSpirit/Scaleway) -# and to avoid getting an IPv6. -IP=$(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 -m 1 | grep -Po '(?<=dev )(\S+)') - -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 $CLIENT - ./easyrsa gen-crl - rm -rf pki/reqs/$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 - sed -i "/iptables -I INPUT -p udp --dport $PORT -j ACCEPT/d" $RCLOCAL - sed -i "/iptables -I FORWARD -s 10.8.0.0\/24 -j ACCEPT/d" $RCLOCAL - sed -i "/iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT/d" $RCLOCAL - fi - sed -i '/iptables -t nat -A POSTROUTING -s 10.8.0.0\/24 -j SNAT --to /d' $RCLOCAL - if hash sestatus 2>/dev/null; then - if sestatus | grep "Current mode" | grep -qs "enforcing"; then - if [[ "$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* - # Where are the client files? - if [ ${SUDO_USER} ]; then # if not, use SUDO_USER - homeDir="/home/${SUDO_USER}" - else # if not SUDO_USER, use /root - homeDir="/root" - fi - rm $homeDir/*.ovpn - 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)" - 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 (in /etc/resolv.conf)" - echo " 2) FDN (France)" - echo " 3) DNS.WATCH (Germany)" - echo " 4) OpenDNS (Anycast: worldwide)" - echo " 5) Google (Anycast: worldwide)" - 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 "Choose which compression algorithm you want to use:" - echo " 1) LZ4 (faster)" - echo " 2) LZ0 (use for OpenVPN 2.3 compatibility" - while [[ $COMPRESSION != "1" && $COMPRESSION != "2" ]]; do - read -p "Compression algorithm [1-2]: " -e -i 1 COMPRESSION - done - case $COMPRESSION in - 1) - COMPRESSION="lz4" - ;; - 2) - COMPRESSION="lzo" - ;; - esac - 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" - 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-RSA-WITH-AES-256-GCM-SHA384" - ;; - 2) - CC_ENC="TLS-ECDHE-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-256" - echo " 2) SHA-384 (recommended)" - echo " 3) SHA-512" - while [[ $HMAC_AUTH != "1" && $HMAC_AUTH != "2" && $HMAC_AUTH != "3" ]]; do - read -p "HMAC authentication algorithm [1-3]: " -e -i 2 HMAC_AUTH - done - case $HMAC_AUTH in - 1) - HMAC_AUTH="SHA256" - ;; - 2) - HMAC_AUTH="SHA384" - ;; - 3) - HMAC_AUTH="SHA512" - ;; - esac - echo "" - echo "Finally, tell me a name for the client certificate and configuration" - while [[ $CLIENT = "" ]]; do - echo "Please, use one word only, no special characters" - read -p "Client name: " -e -i client CLIENT - done - echo "" - echo "Okay, that was all I needed. We are ready to setup your OpenVPN server now" - read -n1 -r -p "Press any key to continue..." - - if [[ "$OS" = 'debian' ]]; then - apt-get install ca-certificates -y - # We add the OpenVPN repo to get the latest version. - # Debian 8 - if [[ "$VERSION_ID" = 'VERSION_ID="8"' ]]; then - echo "deb http://build.openvpn.net/debian/openvpn/stable jessie main" > /etc/apt/sources.list.d/openvpn.list - wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add - - # Ubuntu 14.04 - elif [[ "$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 - - # Ubuntu 16.04 - elif [[ "$VERSION_ID" = 'VERSION_ID="16.04"' ]]; then - echo "deb http://build.openvpn.net/debian/openvpn/stable xenial main" > /etc/apt/sources.list.d/openvpn.list - wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add - - fi - # Ubuntu >= 17.04 and Debian > 9 have OpenVPN 2.4 without the need of a third party repository. - # The we install OpenVPN - apt-get update - apt-get install openvpn iptables openssl wget ca-certificates curl -y - elif [[ "$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 - touch /etc/rc.local - 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 - 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/ - 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 - 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" = '1' ]]; then - echo "proto udp" >> /etc/openvpn/server.conf - elif [[ "$PROTOCOL" = '2' ]]; 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) #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 - ;; - 3) #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 - ;; - 4) #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 - ;; - 5) #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 - ;; - 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" >> /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 $CC_ENC -compress $COMPRESSION -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 '/\/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 -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" = '1' ]]; then - firewall-cmd --zone=public --add-port=$PORT/udp - firewall-cmd --permanent --zone=public --add-port=$PORT/udp - elif [[ "$PROTOCOL" = '2' ]]; then - firewall-cmd --zone=public --add-port=$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" = '1' ]]; then - iptables -I INPUT -p udp --dport $PORT -j ACCEPT - elif [[ "$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" = '1' ]]; then - sed -i "1 a\iptables -I INPUT -p udp --dport $PORT -j ACCEPT" $RCLOCAL - elif [[ "$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 - sed -i "1 a\iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" $RCLOCAL - fi - # If SELinux is enabled and a custom port was selected, we need this - if hash sestatus 2>/dev/null; then - if sestatus | grep "Current mode" | grep -qs "enforcing"; then - if [[ "$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" = '1' ]]; then - semanage port -a -t openvpn_port_t -p udp $PORT - elif [[ "$PROTOCOL" = '2' ]]; 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 - if [[ "$VERSION_ID" = 'VERSION_ID="9"' ]]; then - #Workaround to fix OpenVPN service on Debian 9 OpenVZ - sed -i 's|LimitNPROC|#LimitNPROC|' /lib/systemd/system/openvpn-server\@.service - sed -i 's|/etc/openvpn/server|/etc/openvpn|' /lib/systemd/system/openvpn-server\@.service - sed -i 's|%i.conf|server.conf|' /lib/systemd/system/openvpn-server\@.service - systemctl daemon-reload - systemctl restart openvpn-server@openvpn.service - systemctl enable openvpn-server@openvpn.service - else - systemctl restart openvpn@server.service - fi - else - /etc/init.d/openvpn restart - fi - else - if pgrep systemd-journal; then - if [[ "$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 - 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=$USEREXTERNALIP - fi - fi - # client-template.txt is created so we have a template to add further users later - echo "client" > /etc/openvpn/client-template.txt - if [[ "$PROTOCOL" = '1' ]]; then - echo "proto udp" >> /etc/openvpn/client-template.txt - elif [[ "$PROTOCOL" = '2' ]]; then - echo "proto tcp-client" >> /etc/openvpn/client-template.txt - fi - echo "remote $IP $PORT -dev tun -resolv-retry infinite -nobind -persist-key -persist-tun -remote-cert-tls server -auth $HMAC_AUTH -$CIPHER -tls-client -tls-version-min 1.2 -tls-cipher $CC_ENC -setenv opt block-outside-dns -compress $COMPRESSION -auth-nocache -verb 3" >> /etc/openvpn/client-template.txt - - # Generate the custom client.ovpn - newclient "$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; - -# internet-routing -iptables -t nat -F POSTROUTING -echo 1 > /proc/sys/net/ipv4/ip_forward -iptables -t nat -A POSTROUTING -o eth0 -s 10.8.0.0/24 -j MASQUERADE -