Merge branch 'master' into patch-7

.github/ISSUE_TEMPLATE.md

@@ -7,7 +7,7 @@ Before opening an issue, please make sure:
 - Your issue is about the script, NOT OpenVPN itself
 - ⚠ PLEASE Post your OpenVPN version and OS for both the server and the client if needed
 
-FYI, you can excute the script with `bash -x openvpn-install.sh` to enable debug mode.
+FYI, you can execute the script with `bash -x openvpn-install.sh` to enable debug mode.
 
 You can format your comments with Markdown: https://guides.github.com/features/mastering-markdown/
 --->

FAQ.md

@@ -0,0 +1,47 @@
+# FAQ
+
+**Q:** The script has been updated since I installed OpenVPN. How do I update?
+
+**A:** You can't. Managing updates and new features from the script would require way too much work. Your only solution is to uninstall OpenVPN and reinstall with the updated script.
+
+You can, of course, it's even recommended, update the `openvpn` package with your package manager.
+
+---
+
+**Q:** How do I check for DNS leaks?
+
+**A:** Go to [dnsleaktest.com](https://dnsleaktest.com/) or [ipleak.net](https://ipleak.net/) with your browser. Only your server's IP should show up.
+
+---
+
+**Q:** Can I use an OpenVPN 2.3 client?
+
+**A:** Yes. I really recommend using an up-to-date client, but if you really need it, choose the following options:
+
+- No compression or LZ0
+- RSA certificate
+- DH Key
+- AES CBC
+- tls-auth
+
+If your client is <2.3.3, remove `tls-version-min 1.2` from your `/etc/openvpn/server.conf` and `.ovpn` files.
+
+---
+
+**Q:** IPv6 is not working on my Hetzner VM
+
+**A:** This an issue on their side. See https://angristan.xyz/fix-ipv6-hetzner-cloud/
+
+---
+
+**Q:** DNS is not working on my Linux client
+
+**A:** Make sure the `resolvconf` package is installed. If it does not solve the issue, look at https://wiki.archlinux.org/index.php/OpenVPN#Update_systemd-resolved_script
+
+---
+
+**Q:** How to setup openVPN in a LXC container? (f.e. Proxmox)
+
+**A:** See https://github.com/Nyr/openvpn-install/wiki/How-to-setup-openVPN-in-a-LXC-container-(f.e.-Proxmox)
+
+---

README.md

@@ -33,7 +33,9 @@ When OpenVPN is installed, you can run the script again, and you will get the ch
 
 In your home directory, you will have `.ovpn` files. These are the client configuration files. Download them from your server and connect using your favorite OpenVPN client.
 
-If you have any question, head to the [FAQ](#faq) first.
+If you have any question, head to the [FAQ](#faq) first. Please read everything before opening an issue.
+
+**PLEASE do net send me emails or private messages asking for help.** The only place to get help is the issues. Other people may be able to help and in the future, other users may also run into the same issue as you. My time is not available for free just for you, you're not special.
 
 ### Headless install
 
@@ -134,9 +136,7 @@ Since 2016, the two scripts have diverged and are not alike anymore, especially
 
 ## FAQ
 
-**LOOK AT THE [WIKI](https://github.com/angristan/openvpn-install/wiki/FAQ) FOR MORE INFORMATION. PLEASE READ BOTH BEFORE OPENING AN ISSUE.**
-
-**PLEASE do net send me emails or private messages asking for help.** The only place to get help is the issues. Other people may be able to help and in the future, other users may also run into the same issue as you.
+More Q&A in [FAQ.md](FAQ.md).
 
 **Q:** Which provider do you recommend?
 
@@ -172,6 +172,8 @@ Since 2016, the two scripts have diverged and are not alike anymore, especially
 
 ---
 
+More Q&A in [FAQ.md](FAQ.md).
+
 ##  One-stop solutions for public cloud
 
 Solutions that provision a ready to use OpenVPN server based on this script in one go are available for:

openvpn-install.sh

@@ -31,7 +31,7 @@ function checkOS () {
 				until [[ $CONTINUE =~ (y|n) ]]; do
 					read -rp "Continue? [y/n]: " -e CONTINUE
 				done
-				if [[ "$CONTINUE" = "n" ]]; then
+				if [[ "$CONTINUE" == "n" ]]; then
 					exit 1
 				fi
 			fi
@@ -46,7 +46,7 @@ function checkOS () {
 				until [[ $CONTINUE =~ (y|n) ]]; do
 					read -rp "Continue? [y/n]: " -e CONTINUE
 				done
-				if [[ "$CONTINUE" = "n" ]]; then
+				if [[ "$CONTINUE" == "n" ]]; then
 					exit 1
 				fi
 			fi
@@ -54,10 +54,10 @@ function checkOS () {
 	elif [[ -e /etc/system-release ]]; then
 		# shellcheck disable=SC1091
 		source /etc/os-release
-		if [[ "$ID" = "fedora" ]]; then
+		if [[ "$ID" == "fedora" ]]; then
 			OS="fedora"
 		fi
-		if [[ "$ID" = "centos" ]]; then
+		if [[ "$ID" == "centos" ]]; then
 			OS="centos"
 			if [[ ! $VERSION_ID =~ (7|8) ]]; then
 				echo "⚠️ Your version of CentOS is not supported."
@@ -67,7 +67,7 @@ function checkOS () {
 				exit 1
 			fi
 		fi
-		if [[ "$ID" = "amzn" ]]; then
+		if [[ "$ID" == "amzn" ]]; then
 			OS="amzn"
 			if [[ ! $VERSION_ID == "2" ]]; then
 				echo "⚠️ Your version of Amazon Linux is not supported."
@@ -269,7 +269,7 @@ function installQuestions () {
 				until [[ $CONTINUE =~ (y|n) ]]; do
 					read -rp "Apply configuration changes to Unbound? [y/n]: " -e CONTINUE
 				done
-				if [[ $CONTINUE = "n" ]];then
+				if [[ $CONTINUE == "n" ]];then
 					# Break the loop and cleanup
 					unset DNS
 					unset CONTINUE
@@ -566,7 +566,7 @@ function installOpenVPN () {
 
 	# Get the "public" interface from the default route
 	NIC=$(ip -4 route ls | grep default | grep -Po '(?<=dev )(\S+)' | head -1)
-	if [[ -z "$NIC" ]] && [[ "$IPV6_SUPPORT" = 'y' ]]; then
+	if [[ -z "$NIC" ]] && [[ "$IPV6_SUPPORT" == 'y' ]]; then
 		NIC=$(ip -6 route show default | sed -ne 's/^default .* dev \([^ ]*\) .*$/\1/p')
 	fi
 
@@ -578,7 +578,7 @@ function installOpenVPN () {
                 until [[ $CONTINUE =~ (y|n) ]]; do
                         read -rp "Continue? [y/n]: " -e CONTINUE
                 done
-                if [[ "$CONTINUE" = "n" ]]; then
+                if [[ "$CONTINUE" == "n" ]]; then
                         exit 1
                 fi
         fi
@@ -587,27 +587,27 @@ function installOpenVPN () {
 		apt-get update
 		apt-get -y install ca-certificates gnupg
 		# We add the OpenVPN repo to get the latest version.
-		if [[ "$VERSION_ID" = "8" ]]; then
+		if [[ "$VERSION_ID" == "8" ]]; then
 			echo "deb http://build.openvpn.net/debian/openvpn/stable jessie main" > /etc/apt/sources.list.d/openvpn.list
 			wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
 			apt-get update
 		fi
-		if [[ "$VERSION_ID" = "16.04" ]]; then
+		if [[ "$VERSION_ID" == "16.04" ]]; then
 			echo "deb http://build.openvpn.net/debian/openvpn/stable xenial main" > /etc/apt/sources.list.d/openvpn.list
 			wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
 			apt-get update
 		fi
 		# Ubuntu > 16.04 and Debian > 8 have OpenVPN >= 2.4 without the need of a third party repository.
 		apt-get install -y openvpn iptables openssl wget ca-certificates curl
-	elif [[ "$OS" = 'centos' ]]; then
+	elif [[ "$OS" == 'centos' ]]; then
 		yum install -y epel-release
 		yum install -y openvpn iptables openssl wget ca-certificates curl tar 'policycoreutils-python*'
-	elif [[ "$OS" = 'amzn' ]]; then
+	elif [[ "$OS" == 'amzn' ]]; then
 		amazon-linux-extras install -y epel
 		yum install -y openvpn iptables openssl wget ca-certificates curl
-	elif [[ "$OS" = 'fedora' ]]; then
+	elif [[ "$OS" == 'fedora' ]]; then
 		dnf install -y openvpn iptables openssl wget ca-certificates curl
-	elif [[ "$OS" = 'arch' ]]; then
+	elif [[ "$OS" == 'arch' ]]; then
 		# Install required dependencies and upgrade the system
 		pacman --needed --noconfirm -Syu openvpn iptables openssl wget ca-certificates curl
 	fi
@@ -687,9 +687,9 @@ function installOpenVPN () {
 
 	# Generate server.conf
 	echo "port $PORT" > /etc/openvpn/server.conf
-	if [[ "$IPV6_SUPPORT" = 'n' ]]; then
+	if [[ "$IPV6_SUPPORT" == 'n' ]]; then
 		echo "proto $PROTOCOL" >> /etc/openvpn/server.conf
-	elif [[ "$IPV6_SUPPORT" = 'y' ]]; then
+	elif [[ "$IPV6_SUPPORT" == 'y' ]]; then
 		echo "proto ${PROTOCOL}6" >> /etc/openvpn/server.conf
 	fi
 
@@ -705,7 +705,7 @@ ifconfig-pool-persist ipp.txt" >> /etc/openvpn/server.conf
 
 	# DNS resolvers
 	case $DNS in
-		1)
+		1) # Current system resolvers
 			# Locate the proper resolv.conf
 			# Needed for systems running systemd-resolved
 			if grep -q "127.0.0.53" "/etc/resolv.conf"; then
@@ -718,7 +718,7 @@ ifconfig-pool-persist ipp.txt" >> /etc/openvpn/server.conf
 				echo "push \"dhcp-option DNS $line\"" >> /etc/openvpn/server.conf
 			done
 		;;
-		2)
+		2) # Self-hosted DNS resolver (Unbound)
 			echo 'push "dhcp-option DNS 10.8.0.1"' >> /etc/openvpn/server.conf
 		;;
 		3) # Cloudflare
@@ -771,7 +771,7 @@ ifconfig-pool-persist ipp.txt" >> /etc/openvpn/server.conf
 	echo 'push "redirect-gateway def1 bypass-dhcp"' >> /etc/openvpn/server.conf
 
 	# IPv6 network settings if needed
-	if [[ "$IPV6_SUPPORT" = 'y' ]]; then
+	if [[ "$IPV6_SUPPORT" == 'y' ]]; then
 		echo 'server-ipv6 fd42:42:42:42::/112
 tun-ipv6
 push tun-ipv6
@@ -817,7 +817,7 @@ verb 3" >> /etc/openvpn/server.conf
 
 	# Enable routing
 	echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.d/20-openvpn.conf
-	if [[ "$IPV6_SUPPORT" = 'y' ]]; then
+	if [[ "$IPV6_SUPPORT" == 'y' ]]; then
 		echo 'net.ipv6.conf.all.forwarding=1' >> /etc/sysctl.d/20-openvpn.conf
 	fi
 	# Apply sysctl rules
@@ -833,7 +833,7 @@ verb 3" >> /etc/openvpn/server.conf
 	fi
 
 	# Finally, restart and enable OpenVPN
-	if [[ "$OS" = 'arch' || "$OS" = 'fedora' || "$OS" = 'centos' ]]; then
+	if [[ "$OS" == 'arch' || "$OS" == 'fedora' || "$OS" == 'centos' ]]; then
 		# Don't modify package-provided service
 		cp /usr/lib/systemd/system/openvpn-server@.service /etc/systemd/system/openvpn-server@.service
 
@@ -883,7 +883,7 @@ iptables -I FORWARD 1 -i $NIC -o tun0 -j ACCEPT
 iptables -I FORWARD 1 -i tun0 -o $NIC -j ACCEPT
 iptables -I INPUT 1 -i $NIC -p $PROTOCOL --dport $PORT -j ACCEPT" > /etc/iptables/add-openvpn-rules.sh
 
-	if [[ "$IPV6_SUPPORT" = 'y' ]]; then
+	if [[ "$IPV6_SUPPORT" == 'y' ]]; then
 		echo "ip6tables -t nat -I POSTROUTING 1 -s fd42:42:42:42::/112 -o $NIC -j MASQUERADE
 ip6tables -I INPUT 1 -i tun0 -j ACCEPT
 ip6tables -I FORWARD 1 -i $NIC -o tun0 -j ACCEPT
@@ -898,7 +898,7 @@ iptables -D FORWARD -i $NIC -o tun0 -j ACCEPT
 iptables -D FORWARD -i tun0 -o $NIC -j ACCEPT
 iptables -D INPUT -i $NIC -p $PROTOCOL --dport $PORT -j ACCEPT" > /etc/iptables/rm-openvpn-rules.sh
 
-	if [[ "$IPV6_SUPPORT" = 'y' ]]; then
+	if [[ "$IPV6_SUPPORT" == 'y' ]]; then
 		echo "ip6tables -t nat -D POSTROUTING -s fd42:42:42:42::/112 -o $NIC -j MASQUERADE
 ip6tables -D INPUT -i tun0 -j ACCEPT
 ip6tables -D FORWARD -i $NIC -o tun0 -j ACCEPT
@@ -935,10 +935,10 @@ WantedBy=multi-user.target" > /etc/systemd/system/iptables-openvpn.service
 
 	# 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" == 'udp' ]]; then
 		echo "proto udp" >> /etc/openvpn/client-template.txt
 		echo "explicit-exit-notify" >> /etc/openvpn/client-template.txt
-	elif [[ "$PROTOCOL" = 'tcp' ]]; then
+	elif [[ "$PROTOCOL" == 'tcp' ]]; then
 		echo "proto tcp-client" >> /etc/openvpn/client-template.txt
 	fi
 	echo "remote $IP $PORT
@@ -1052,7 +1052,7 @@ function newClient () {
 
 function revokeClient () {
 	NUMBEROFCLIENTS=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep -c "^V")
-	if [[ "$NUMBEROFCLIENTS" = '0' ]]; then
+	if [[ "$NUMBEROFCLIENTS" == '0' ]]; then
 		echo ""
 		echo "You have no existing clients!"
 		exit 1
@@ -1061,7 +1061,7 @@ function revokeClient () {
 	echo ""
 	echo "Select the existing client certificate you want to revoke"
 	tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep "^V" | cut -d '=' -f 2 | nl -s ') '
-	if [[ "$NUMBEROFCLIENTS" = '1' ]]; then
+	if [[ "$NUMBEROFCLIENTS" == '1' ]]; then
 		read -rp "Select one client [1]: " CLIENTNUMBER
 	else
 		read -rp "Select one client [1-$NUMBEROFCLIENTS]: " CLIENTNUMBER
@@ -1090,7 +1090,6 @@ function removeUnbound () {
 	# Remove OpenVPN-related config
 	sed -i '/include: \/etc\/unbound\/unbound\.conf\.d\/openvpn\.conf/d' /etc/unbound/unbound.conf
 	rm /etc/unbound/unbound.conf.d/openvpn.conf
-	systemctl restart unbound
 
 	until [[ $REMOVE_UNBOUND =~ (y|n) ]]; do
 		echo ""
@@ -1098,17 +1097,17 @@ function removeUnbound () {
 		read -rp "Do you want to completely remove Unbound? [y/n]: " -e REMOVE_UNBOUND
 	done
 
-	if [[ "$REMOVE_UNBOUND" = 'y' ]]; then
+	if [[ "$REMOVE_UNBOUND" == 'y' ]]; then
 		# Stop Unbound
 		systemctl stop unbound
 
 		if [[ "$OS" =~ (debian|ubuntu) ]]; then
 			apt-get autoremove --purge -y unbound
-		elif [[ "$OS" = 'arch' ]]; then
+		elif [[ "$OS" == 'arch' ]]; then
 			pacman --noconfirm -R unbound
 		elif [[ "$OS" =~ (centos|amzn) ]]; then
 			yum remove -y unbound
-		elif [[ "$OS" = 'fedora' ]]; then
+		elif [[ "$OS" == 'fedora' ]]; then
 			dnf remove -y unbound
 		fi
 
@@ -1117,6 +1116,7 @@ function removeUnbound () {
 		echo ""
 		echo "Unbound removed!"
 	else
+		systemctl restart unbound
 		echo ""
 		echo "Unbound wasn't removed."
 	fi
@@ -1126,7 +1126,7 @@ function removeOpenVPN () {
 	echo ""
 	# shellcheck disable=SC2034
 	read -rp "Do you really want to remove OpenVPN? [y/n]: " -e -i n REMOVE
-	if [[ "$REMOVE" = 'y' ]]; then
+	if [[ "$REMOVE" == 'y' ]]; then
 		# Get OpenVPN port from the configuration
 		PORT=$(grep '^port ' /etc/openvpn/server.conf | cut -d " " -f 2)
 
@@ -1170,11 +1170,11 @@ function removeOpenVPN () {
 				rm /etc/apt/sources.list.d/openvpn.list
 				apt-get update
 			fi
-		elif [[ "$OS" = 'arch' ]]; then
+		elif [[ "$OS" == 'arch' ]]; then
 			pacman --noconfirm -R openvpn
 		elif [[ "$OS" =~ (centos|amzn) ]]; then
 			yum remove -y openvpn
-		elif [[ "$OS" = 'fedora' ]]; then
+		elif [[ "$OS" == 'fedora' ]]; then
 			dnf remove -y openvpn
 		fi