Refactoring, cleanup, comments, etc
This commit is contained in:
angristan
parent
66a6a702c2
commit
91eef0ebb8
1 changed files with 126 additions and 177 deletions
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@ -33,7 +33,7 @@ function checkOS () {
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done
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if [[ "$CONTINUE" = "n" ]]; then
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echo "Ok, bye!"
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exit 4
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exit 1
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fi
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fi
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elif [[ -e /etc/fedora-release ]]; then
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@ -49,13 +49,13 @@ function checkOS () {
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done
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if [[ "$CONTINUE" = "n" ]]; then
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echo "Ok, bye!"
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exit 5
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exit 1
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fi
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fi
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OS=centos
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else
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echo "Looks like you aren't running this installer on a Debian, Ubuntu, Fedora or CentOS system"
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exit 4
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exit 1
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fi
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}
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@ -66,7 +66,7 @@ function initialCheck () {
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fi
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if ! tunAvailable; then
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echo "TUN is not available"
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exit 2
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exit 1
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fi
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checkOS
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}
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@ -77,6 +77,7 @@ function installLocalDNS () {
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if [[ "$OS" = "debian" ]]; then
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apt-get install -y unbound
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# Configuration
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echo 'interface: 10.8.0.1
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access-control: 10.8.0.1/24 allow
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hide-identity: yes
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@ -116,11 +117,10 @@ prefetch: yes' >> /etc/unbound/unbound.conf
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private-address: 127.0.0.0/8
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private-address: ::ffff:0:0/96" >> /etc/unbound/unbound.conf
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fi
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else
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# Unbound is already installed
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else # Unbound is already installed
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echo 'include: /etc/unbound/openvpn.conf' >> /etc/unbound/unbound.conf
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# Add OpenVPN integration
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# Add Unbound 'server' for the OpenVPN subnet
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echo 'server:
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interface: 10.8.0.1
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access-control: 10.8.0.1/24 allow
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@ -138,19 +138,15 @@ private-address: 127.0.0.0/8
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private-address: ::ffff:0:0/96' > /etc/unbound/openvpn.conf
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fi
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if pgrep systemd-journal; then
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systemctl enable unbound
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systemctl start unbound
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else
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service unbound restart
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fi
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}
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function installOpenVPN () {
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echo "Welcome to the secure OpenVPN installer (github.com/Angristan/OpenVPN-install)"
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echo "Welcome to the OpenVPN installer!"
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echo "The git repository is available at: https://github.com/angristan/openvpn-install"
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echo ""
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# OpenVPN setup and first user creation
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echo "I need to ask you a few questions before starting the setup"
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echo "You can leave the default options and just press enter if you are ok with them"
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echo ""
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@ -158,7 +154,7 @@ function installOpenVPN () {
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echo "If your server is running behind a NAT, (e.g. LowEndSpirit, Scaleway) leave the IP address as it is. (local/private IP)"
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echo "Otherwise, it should be your public IPv4 address."
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# Autodetect IP address and pre-fill for the user
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# Detect public IPv4 address and pre-fill for the user
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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 -oE '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | head -1)
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read -rp "IP address: " -e -i $IP IP
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# If $IP is a private IP address, the server must be behind NAT
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@ -167,21 +163,25 @@ function installOpenVPN () {
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echo "This server is behind NAT. What is the public IPv4 address or hostname?"
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read -rp "Public IP address / hostname: " -e PUBLICIP
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fi
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echo ""
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echo "Checking for IPv6 connectivity..."
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ping6 -c4 ipv6.google.com > /dev/null 2>&1;
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echo ""
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if [[ $? == 0 ]]; then
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echo "Your host appears to have IPv6 connectivity."
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SUGGESTION="y"
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else
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echo "Your host does not appear to have IPv6 connectivity."
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SUGGESTION="n"
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fi
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echo ""
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while [[ $IPV6 != "y" && $IPV6 != "n" ]]; do
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read -rp "Do you want to enable IPv6 support? [y/n]: " -e IPV6
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# Ask the user if they want to enable IPv6 regardless its availability.
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while [[ $IPV6_SUPPORT != "y" && $IPV6_SUPPORT != "n" ]]; do
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read -rp "Do you want to enable IPv6 support? [y/n]: " -e -i $SUGGESTION IPV6_SUPPORT
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done
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echo ""
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echo "What port do you want for OpenVPN?"
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echo "What port do you want OpenVPN to listen to?"
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echo " 1) Default: 1194"
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echo " 2) Custom"
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echo " 3) Random [49152-65535]"
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@ -204,13 +204,23 @@ function installOpenVPN () {
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;;
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esac
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echo ""
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echo "What protocol do you want for OpenVPN?"
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echo "Unless UDP is blocked, you should not use TCP (unnecessarily slower)"
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until [[ "$PROTOCOL" == "UDP" || "$PROTOCOL" == "TCP" ]]; do
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read -rp "Protocol [UDP/TCP]: " -e -i UDP PROTOCOL
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echo "What protocol do you want OpenVPN to use?"
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echo "UDP is faster. Unless it is not available, you shoudn't use TCP."
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echo " 1) UDP"
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echo " 2) TCP"
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until [[ "$PROTOCOL_CHOICE" =~ ^[1-2] ]]; do
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read -rp "Protocol [1-2]: " -e -i 1 PROTOCOL_CHOICE
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done
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case $PROTOCOL_CHOICE in
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1)
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PROTOCOL="udp"
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;;
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2)
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PROTOCOL="tcp"
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;;
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esac
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echo ""
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echo "What DNS do you want to use with the VPN?"
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echo "What DNS resolvers do you want to use with the VPN?"
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echo " 1) Current system resolvers (from /etc/resolv.conf)"
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echo " 2) Self-hosted DNS Resolver (Unbound)"
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echo " 3) Cloudflare (Anycast: worldwide)"
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@ -222,7 +232,7 @@ function installOpenVPN () {
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echo " 9) Yandex Basic (Russia)"
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echo " 10) AdGuard DNS (Russia)"
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until [[ "$DNS" =~ ^[0-9]+$ ]] && [ "$DNS" -ge 1 -a "$DNS" -le 10 ]; do
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read -rp "DNS [1-10]: " -e -i 1 DNS
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read -rp "DNS [1-10]: " -e -i 3 DNS
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if [[ $DNS == 2 ]] && [[ -e /etc/unbound/unbound.conf ]]; then
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echo ""
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echo "Unbound is already installed."
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@ -235,6 +245,7 @@ function installOpenVPN () {
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read -rp "Apply configuration changes to Unbound? [y/n]: " -e CONTINUE
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done
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if [[ $CONTINUE = "n" ]];then
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# Break the loop and cleanup
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unset DNS
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unset CONTINUE
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fi
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@ -245,21 +256,15 @@ function installOpenVPN () {
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echo "the encryption in OpenVPN and the choices I made in this script."
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echo "Please note that all the choices proposed are secure (to a different degree)"
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echo "and are still viable to date, unlike some default OpenVPN options"
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echo ''
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echo ""
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echo "Choose which cipher you want to use for the data channel:"
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echo " 1) AES-128-CBC (fastest and sufficiently secure for everyone, recommended)"
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echo " 1) AES-128-CBC (recommended)"
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echo " 2) AES-192-CBC"
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echo " 3) AES-256-CBC"
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echo "Alternatives to AES, use them only if you know what you're doing."
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echo "They are relatively slower but as secure as AES."
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echo " 4) CAMELLIA-128-CBC"
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echo " 5) CAMELLIA-192-CBC"
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echo " 6) CAMELLIA-256-CBC"
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echo " 7) SEED-CBC"
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until [[ "$CIPHER" =~ ^[0-9]+$ ]] && [ "$CIPHER" -ge 1 -a "$CIPHER" -le 7 ]; do
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read -rp "Cipher [1-7]: " -e -i 1 CIPHER
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until [[ "$CIPHER_CHOICE" =~ ^[0-9]+$ ]] && [ "$CIPHER_CHOICE" -ge 1 -a "$CIPHER_CHOICE" -le 3 ]; do
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read -rp "CIPHER_CHOICE [1-7]: " -e -i 1 CIPHER_CHOICE
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done
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case $CIPHER in
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case $CIPHER_CHOICE in
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1)
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CIPHER="cipher AES-128-CBC"
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;;
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@ -269,28 +274,16 @@ function installOpenVPN () {
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3)
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CIPHER="cipher AES-256-CBC"
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;;
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4)
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CIPHER="cipher CAMELLIA-128-CBC"
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;;
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5)
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CIPHER="cipher CAMELLIA-192-CBC"
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;;
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6)
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CIPHER="cipher CAMELLIA-256-CBC"
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;;
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7)
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CIPHER="cipher SEED-CBC"
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;;
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esac
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echo ""
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echo "Choose what size of Diffie-Hellman key you want to use:"
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echo " 1) 2048 bits (fastest)"
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echo " 2) 3072 bits (recommended, best compromise)"
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echo " 3) 4096 bits (most secure)"
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until [[ "$DH_KEY_SIZE" =~ ^[0-9]+$ ]] && [ "$DH_KEY_SIZE" -ge 1 -a "$DH_KEY_SIZE" -le 3 ]; do
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read -rp "DH key size [1-3]: " -e -i 2 DH_KEY_SIZE
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until [[ "$DH_KEY_SIZE_CHOICE" =~ ^[0-9]+$ ]] && [ "$DH_KEY_SIZE_CHOICE" -ge 1 -a "$DH_KEY_SIZE_CHOICE" -le 3 ]; do
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read -rp "DH key size [1-3]: " -e -i 2 DH_KEY_SIZE_CHOICE
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done
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case $DH_KEY_SIZE in
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case $DH_KEY_SIZE_CHOICE in
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1)
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DH_KEY_SIZE="2048"
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;;
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@ -302,14 +295,14 @@ function installOpenVPN () {
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;;
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esac
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echo ""
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echo "Choose what size of RSA key you want to use:"
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echo "Choose what size of RSA key you want to use for the certificate:"
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echo " 1) 2048 bits (fastest)"
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echo " 2) 3072 bits (recommended, best compromise)"
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echo " 3) 4096 bits (most secure)"
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until [[ "$RSA_KEY_SIZE" =~ ^[0-9]+$ ]] && [ "$RSA_KEY_SIZE" -ge 1 -a "$RSA_KEY_SIZE" -le 3 ]; do
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read -rp "RSA key size [1-3]: " -e -i 2 RSA_KEY_SIZE
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until [[ "$RSA_KEY_SIZE_CHOICE" =~ ^[0-9]+$ ]] && [ "$RSA_KEY_SIZE_CHOICE" -ge 1 -a "$RSA_KEY_SIZE_CHOICE" -le 3 ]; do
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read -rp "RSA key size [1-3]: " -e -i 2 RSA_KEY_SIZE_CHOICE
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done
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case $RSA_KEY_SIZE in
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case $RSA_KEY_SIZE_CHOICE in
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1)
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RSA_KEY_SIZE="2048"
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;;
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@ -321,43 +314,28 @@ function installOpenVPN () {
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;;
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esac
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echo ""
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echo "Do you want to protect the configuration file with a password?"
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echo "(e.g. encrypt the private key with a password)"
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echo " 1) Add a passwordless client"
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echo " 2) Use a password for the client"
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until [[ "$pass" =~ ^[1-2]$ ]]; do
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read -rp "Select an option [1-2]: " -e -i 1 pass
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done
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echo ""
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echo "Finally, tell me a name for the client certificate and configuration"
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echo "Use one word only, no special characters"
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until [[ "$CLIENT" =~ ^[a-zA-Z0-9_]+$ ]]; do
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read -rp "Client name: " -e -i client CLIENT
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done
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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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echo "You will be able to generate a client at the end of the installtion."
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read -n1 -r -p "Press any key to continue..."
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# Get the "public" interface from the default route
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NIC=$(ip -4 route ls | grep default | grep -Po '(?<=dev )(\S+)' | head -1)
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if [[ "$OS" = 'debian' ]]; then
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apt-get update
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apt-get install ca-certificates gnupg -y
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# We add the OpenVPN repo to get the latest version.
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# Debian 8
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if [[ "$VERSION_ID" = 'VERSION_ID="8"' ]]; then
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echo "deb http://build.openvpn.net/debian/openvpn/stable jessie main" > /etc/apt/sources.list.d/openvpn.list
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wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
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apt-get update
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fi
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# Ubuntu >= 16.04 and Debian > 8 have OpenVPN > 2.3.3 without the need of a third party repository.
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# The we install OpenVPN
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apt-get install openvpn iptables openssl wget ca-certificates curl -y
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elif [[ "$OS" = 'centos' || "$OS" = 'fedora' ]]; then
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if [[ "$OS" = 'centos' ]]; then
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yum install epel-release -y
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fi
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yum install openvpn iptables openssl wget ca-certificates curl -y
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elif [[ "$OS" = 'centos' ]]; then
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yum install epel-release openvpn iptables openssl wget ca-certificates curl -y
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elif [[ "$OS" = 'fedora' ]]; then
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dnf install openvpn iptables openssl wget ca-certificates curl -y
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fi
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# Find out if the machine uses nogroup or nobody for the permissionless group
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@ -372,6 +350,7 @@ function installOpenVPN () {
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rm -rf /etc/openvpn/easy-rsa/
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fi
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# Install the latest version of easy-rsa from source
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local version="3.0.4"
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wget -O ~/EasyRSA-${version}.tgz https://github.com/OpenVPN/easy-rsa/releases/download/v${version}/EasyRSA-${version}.tgz
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tar xzf ~/EasyRSA-${version}.tgz -C ~/
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@ -386,22 +365,13 @@ function installOpenVPN () {
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SERVER_NAME="server_$(head /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 16 | head -n 1)"
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echo "set_var EASYRSA_KEY_SIZE $RSA_KEY_SIZE" > vars
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echo "set_var EASYRSA_REQ_CN $SERVER_CN" >> vars
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# Create the PKI, set up the CA, the DH params and the server + client certificates
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# Create the PKI, set up the CA, the DH params and the server certificate
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./easyrsa init-pki
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./easyrsa --batch build-ca nopass
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openssl dhparam -out dh.pem $DH_KEY_SIZE
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./easyrsa build-server-full $SERVER_NAME nopass
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case $pass in
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1)
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./easyrsa build-client-full $CLIENT nopass
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;;
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2)
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echo "⚠️ You will be asked for the client password below ⚠️"
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./easyrsa build-client-full $CLIENT
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;;
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esac
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EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
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# generate tls-auth key
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# Generate tls-auth key
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openvpn --genkey --secret /etc/openvpn/tls-auth.key
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# Move all the generated files
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cp pki/ca.crt pki/private/ca.key dh.pem pki/issued/$SERVER_NAME.crt pki/private/$SERVER_NAME.key /etc/openvpn/easy-rsa/pki/crl.pem /etc/openvpn
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@ -410,19 +380,12 @@ function installOpenVPN () {
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# Generate server.conf
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echo "port $PORT" > /etc/openvpn/server.conf
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if [[ "$IPV6" = 'n' ]]; then
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if [[ "$PROTOCOL" = 'UDP' ]]; then
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echo "proto udp" >> /etc/openvpn/server.conf
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elif [[ "$PROTOCOL" = 'TCP' ]]; then
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echo "proto tcp" >> /etc/openvpn/server.conf
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fi
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elif [[ "$IPV6" = 'y' ]]; then
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if [[ "$PROTOCOL" = 'UDP' ]]; then
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echo "proto udp6" >> /etc/openvpn/server.conf
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elif [[ "$PROTOCOL" = 'TCP' ]]; then
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echo "proto tcp6" >> /etc/openvpn/server.conf
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fi
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if [[ "$IPV6_SUPPORT" = 'n' ]]; then
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echo "proto $PROTOCOL" >> /etc/openvpn/server.conf
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elif [[ "$IPV6_SUPPORT" = 'y' ]]; then
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echo "proto ${PROTOCOL}6" >> /etc/openvpn/server.conf
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fi
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echo "dev tun
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user nobody
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group $NOGROUP
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@ -432,6 +395,7 @@ keepalive 10 120
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topology subnet
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server 10.8.0.0 255.255.255.0
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ifconfig-pool-persist ipp.txt" >> /etc/openvpn/server.conf
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# DNS resolvers
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case $DNS in
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1)
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@ -487,7 +451,8 @@ ifconfig-pool-persist ipp.txt" >> /etc/openvpn/server.conf
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esac
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echo 'push "redirect-gateway def1 bypass-dhcp" '>> /etc/openvpn/server.conf
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if [[ "$IPV6" = 'y' ]]; then
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# IPv6 network settings if needed
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if [[ "$IPV6_SUPPORT" = 'y' ]]; then
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echo 'server-ipv6 fd42:42:42:42::/112
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tun-ipv6
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push tun-ipv6
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@ -514,10 +479,9 @@ verb 3" >> /etc/openvpn/server.conf
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# Enable routing
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echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.d/20-openvpn.conf
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if [[ "$IPV6" = 'y' ]]; then
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if [[ "$IPV6_SUPPORT" = 'y' ]]; then
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echo 'net.ipv6.conf.all.forwarding=1' >> /etc/sysctl.d/20-openvpn.conf
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fi
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# Avoid an unneeded reboot
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sysctl --system
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@ -525,15 +489,7 @@ verb 3" >> /etc/openvpn/server.conf
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if hash sestatus 2>/dev/null; then
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if sestatus | grep "Current mode" | grep -qs "enforcing"; then
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if [[ "$PORT" != '1194' ]]; then
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# semanage isn't available in CentOS 6 by default
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if ! hash semanage 2>/dev/null; then
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yum install policycoreutils-python -y
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fi
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if [[ "$PROTOCOL" = 'UDP' ]]; then
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semanage port -a -t openvpn_port_t -p udp $PORT
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elif [[ "$PROTOCOL" = 'TCP' ]]; then
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semanage port -a -t openvpn_port_t -p tcp $PORT
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fi
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||||
semanage port -a -t openvpn_port_t -p $PROTOCOL $PORT
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
|
|
@ -557,7 +513,7 @@ verb 3" >> /etc/openvpn/server.conf
|
|||
systemctl enable openvpn@server
|
||||
fi
|
||||
|
||||
# Install iptables service
|
||||
# Add iptables rules in two scripts
|
||||
mkdir /etc/iptables
|
||||
|
||||
# Script to add rules
|
||||
|
|
@ -565,15 +521,10 @@ verb 3" >> /etc/openvpn/server.conf
|
|||
iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o $NIC -j MASQUERADE
|
||||
iptables -A INPUT -i tun0 -j ACCEPT
|
||||
iptables -A FORWARD -i $NIC -o tun0 -j ACCEPT
|
||||
iptables -A FORWARD -i tun0 -o $NIC -j ACCEPT" > /etc/iptables/add-openvpn-rules.sh
|
||||
iptables -A FORWARD -i tun0 -o $NIC -j ACCEPT
|
||||
iptables -A INPUT -i $NIC -p $PROTOCOL --dport $PORT -j ACCEPT" > /etc/iptables/add-openvpn-rules.sh
|
||||
|
||||
if [[ "$PROTOCOL" = 'UDP' ]]; then
|
||||
echo "iptables -A INPUT -i $NIC -p udp --dport $PORT -j ACCEPT" >> /etc/iptables/add-openvpn-rules.sh
|
||||
elif [[ "$PROTOCOL" = 'TCP' ]]; then
|
||||
echo "iptables -A INPUT -i $NIC -p tcp --dport $PORT -j ACCEPT" >> /etc/iptables/add-openvpn-rules.sh
|
||||
fi
|
||||
|
||||
if [[ "$IPV6" = 'y' ]]; then
|
||||
if [[ "$IPV6_SUPPORT" = 'y' ]]; then
|
||||
echo "ip6tables -t nat -A POSTROUTING -s fd42:42:42:42::/112 -o $NIC -j MASQUERADE
|
||||
ip6tables -A INPUT -i tun0 -j ACCEPT
|
||||
ip6tables -A FORWARD -i $NIC -o tun0 -j ACCEPT
|
||||
|
|
@ -585,15 +536,10 @@ ip6tables -A FORWARD -i tun0 -o $NIC -j ACCEPT" >> /etc/iptables/add-openvpn-rul
|
|||
iptables -t nat -D POSTROUTING -s 10.8.0.0/24 -o $NIC -j MASQUERADE
|
||||
iptables -D INPUT -i tun0 -j ACCEPT
|
||||
iptables -D FORWARD -i $NIC -o tun0 -j ACCEPT
|
||||
iptables -D FORWARD -i tun0 -o $NIC -j ACCEPT" > /etc/iptables/rm-openvpn-rules.sh
|
||||
iptables -D FORWARD -i tun0 -o $NIC -j ACCEPT
|
||||
iptables -D INPUT -i $NIC -p $PROTOCOL --dport $PORT -j ACCEPT" > /etc/iptables/rm-openvpn-rules.sh
|
||||
|
||||
if [[ "$PROTOCOL" = 'UDP' ]]; then
|
||||
echo "iptables -D INPUT -i $NIC -p udp --dport $PORT -j ACCEPT" >> /etc/iptables/rm-openvpn-rules.sh
|
||||
elif [[ "$PROTOCOL" = 'TCP' ]]; then
|
||||
echo "iptables -D INPUT -i $NIC -p tcp --dport $PORT -j ACCEPT" >> /etc/iptables/rm-openvpn-rules.sh
|
||||
fi
|
||||
|
||||
if [[ "$IPV6" = '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 $NIC -o tun0 -j ACCEPT
|
||||
|
|
@ -623,16 +569,16 @@ WantedBy=multi-user.target" > /etc/systemd/system/iptables-openvpn.service
|
|||
systemctl enable iptables-openvpn
|
||||
systemctl start iptables-openvpn
|
||||
|
||||
# If the server is behind a NAT, use the correct IP address
|
||||
# If the server is behind a NAT, use the correct IP address for the clients to connect to
|
||||
if [[ "$PUBLICIP" != "" ]]; then
|
||||
IP=$PUBLICIP
|
||||
fi
|
||||
|
||||
# client-template.txt is created so we have a template to add further users later
|
||||
echo "client" > /etc/openvpn/client-template.txt
|
||||
if [[ "$PROTOCOL" = 'UDP' ]]; then
|
||||
if [[ "$PROTOCOL" = 'udp' ]]; then
|
||||
echo "proto udp" >> /etc/openvpn/client-template.txt
|
||||
elif [[ "$PROTOCOL" = 'TCP' ]]; then
|
||||
elif [[ "$PROTOCOL" = 'tcp' ]]; then
|
||||
echo "proto tcp-client" >> /etc/openvpn/client-template.txt
|
||||
fi
|
||||
echo "remote $IP $PORT
|
||||
|
|
@ -653,76 +599,73 @@ setenv opt block-outside-dns
|
|||
verb 3" >> /etc/openvpn/client-template.txt
|
||||
|
||||
# Generate the custom client.ovpn
|
||||
newclient
|
||||
newClient
|
||||
echo "If you want to add more clients, you simply need to run this script another time!"
|
||||
}
|
||||
|
||||
function newClient () {
|
||||
echo ""
|
||||
echo "Tell me a name for the client."
|
||||
echo "Use one word only, no special characters."
|
||||
|
||||
until [[ "$CLIENT" =~ ^[a-zA-Z0-9_]+$ ]]; do
|
||||
read -rp "Client name: " -e CLIENT
|
||||
done
|
||||
|
||||
echo ""
|
||||
echo "Do you want to protect the configuration file with a password?"
|
||||
echo "(e.g. encrypt the private key with a password)"
|
||||
echo " 1) Add a passwordless client"
|
||||
echo " 2) Use a password for the client"
|
||||
|
||||
until [[ "$pass" =~ ^[1-2]$ ]]; do
|
||||
read -rp "Select an option [1-2]: " -e -i 1 local pass
|
||||
done
|
||||
|
||||
echo ""
|
||||
echo "Tell me a name for the client cert"
|
||||
echo "Use one word only, no special characters"
|
||||
|
||||
until [[ "$client" =~ ^[a-zA-Z0-9_]+$ ]]; do
|
||||
read -rp "Client name: " -e local client
|
||||
until [[ "$PASS" =~ ^[1-2]$ ]]; do
|
||||
read -rp "Select an option [1-2]: " -e -i 1 PASS
|
||||
done
|
||||
|
||||
generateClient
|
||||
}
|
||||
|
||||
function generateClient () {
|
||||
cd /etc/openvpn/easy-rsa/ || return
|
||||
case $pass in
|
||||
case $PASS in
|
||||
1)
|
||||
./easyrsa build-client-full $client nopass
|
||||
./easyrsa build-client-full $CLIENT nopass
|
||||
;;
|
||||
2)
|
||||
echo "⚠️ You will be asked for the client password below ⚠️"
|
||||
./easyrsa build-client-full $client
|
||||
./easyrsa build-client-full $CLIENT
|
||||
;;
|
||||
esac
|
||||
|
||||
# Where to write the custom client.ovpn?
|
||||
if [ -e "/home/$client" ]; then # if $1 is a user name
|
||||
homeDir="/home/$client"
|
||||
# Home directory of the user, where the client configuration (.ovpn) will be written
|
||||
if [ -e "/home/$CLIENT" ]; then # if $1 is a user name
|
||||
homeDir="/home/$CLIENT"
|
||||
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
|
||||
cp /etc/openvpn/client-template.txt "$homeDir/$client.ovpn"
|
||||
cp /etc/openvpn/client-template.txt "$homeDir/$CLIENT.ovpn"
|
||||
{
|
||||
echo "<ca>"
|
||||
cat "/etc/openvpn/easy-rsa/pki/ca.crt"
|
||||
echo "</ca>"
|
||||
|
||||
echo "<cert>"
|
||||
cat "/etc/openvpn/easy-rsa/pki/issued/$client.crt"
|
||||
cat "/etc/openvpn/easy-rsa/pki/issued/$CLIENT.crt"
|
||||
echo "</cert>"
|
||||
|
||||
echo "<key>"
|
||||
cat "/etc/openvpn/easy-rsa/pki/private/$client.key"
|
||||
cat "/etc/openvpn/easy-rsa/pki/private/$CLIENT.key"
|
||||
echo "</key>"
|
||||
echo "key-direction 1"
|
||||
|
||||
echo "<tls-auth>"
|
||||
cat "/etc/openvpn/tls-auth.key"
|
||||
echo "</tls-auth>"
|
||||
} >> "$homeDir/$client.ovpn"
|
||||
} >> "$homeDir/$CLIENT.ovpn"
|
||||
|
||||
echo ""
|
||||
echo "Client $client added, certs available at $homeDir/$client.ovpn"
|
||||
exit
|
||||
echo "Client $CLIENT added, the configuration file is available at $homeDir/$CLIENT.ovpn."
|
||||
echo "Download the .ovpn file and import it in your OpenVPN client."
|
||||
}
|
||||
|
||||
function revokeClient () {
|
||||
|
|
@ -730,7 +673,7 @@ function revokeClient () {
|
|||
if [[ "$NUMBEROFCLIENTS" = '0' ]]; then
|
||||
echo ""
|
||||
echo "You have no existing clients!"
|
||||
exit 5
|
||||
exit 1
|
||||
fi
|
||||
|
||||
echo ""
|
||||
|
|
@ -746,6 +689,7 @@ function revokeClient () {
|
|||
cd /etc/openvpn/easy-rsa/
|
||||
./easyrsa --batch revoke $CLIENT
|
||||
EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
|
||||
# Cleanup
|
||||
rm -f pki/reqs/$CLIENT.req
|
||||
rm -f pki/private/$CLIENT.key
|
||||
rm -f pki/issued/$CLIENT.crt
|
||||
|
|
@ -756,9 +700,7 @@ function revokeClient () {
|
|||
rm -f /root/$CLIENT.ovpn 2>/dev/null
|
||||
|
||||
echo ""
|
||||
echo "Certificate for client $CLIENT revoked"
|
||||
echo "Exiting..."
|
||||
exit
|
||||
echo "Certificate for client $CLIENT revoked."
|
||||
}
|
||||
|
||||
function removeOpenVPN () {
|
||||
|
|
@ -767,7 +709,7 @@ function removeOpenVPN () {
|
|||
if [[ "$REMOVE" = 'y' ]]; then
|
||||
PORT=$(grep '^port ' /etc/openvpn/server.conf | cut -d " " -f 2)
|
||||
|
||||
# Remove ipatbles rules related to the script
|
||||
# Remove the iptables rules related to the script
|
||||
systemctl stop iptables-openvpn
|
||||
# Cleanup
|
||||
systemctl disable iptables-openvpn
|
||||
|
|
@ -776,6 +718,7 @@ function removeOpenVPN () {
|
|||
rm /etc/iptables/add-openvpn-rules.sh
|
||||
rm /etc/iptables/rm-openvpn-rules.sh
|
||||
|
||||
# SELinux
|
||||
if hash sestatus 2>/dev/null; then
|
||||
if sestatus | grep "Current mode" | grep -qs "enforcing"; then
|
||||
if [[ "$PORT" != '1194' ]]; then
|
||||
|
|
@ -783,11 +726,16 @@ function removeOpenVPN () {
|
|||
fi
|
||||
fi
|
||||
fi
|
||||
|
||||
if [[ "$OS" = 'debian' ]]; then
|
||||
apt-get autoremove --purge -y openvpn
|
||||
else
|
||||
elif [[ "$OS" = 'centos' ]]; then
|
||||
yum remove openvpn -y
|
||||
elif [[ "$OS" = 'fedora' ]]; then
|
||||
dnf remove openvpn -y
|
||||
fi
|
||||
|
||||
# Cleanup
|
||||
OVPNS=$(ls /etc/openvpn/easy-rsa/pki/issued | awk -F "." {'print $1'})
|
||||
for i in $OVPNS;do
|
||||
rm $(find /home -maxdepth 2 | grep $i.ovpn) 2>/dev/null
|
||||
|
|
@ -797,8 +745,8 @@ function removeOpenVPN () {
|
|||
rm -rf /usr/share/doc/openvpn*
|
||||
rm -f /etc/sysctl.d/20-openvpn.conf
|
||||
|
||||
# Unbound
|
||||
if [[ -e /etc/unbound/openvpn.conf ]]; then
|
||||
|
||||
# Remove OpenVPN-related config
|
||||
sed -i 's|include: \/etc\/unbound\/openvpn.conf||' /etc/unbound/unbound.conf
|
||||
rm /etc/unbound/openvpn.conf
|
||||
|
|
@ -807,22 +755,25 @@ function removeOpenVPN () {
|
|||
until [[ $REMOVE_UNBOUND == "y" || $REMOVE_UNBOUND == "n" ]]; do
|
||||
echo ""
|
||||
echo "If you were already using Unbound before installing OpenVPN, I removed the configuration related to OpenVPN."
|
||||
echo "You can keep using Unbound as before."
|
||||
read -rp "Do you want to completely remove Unbound? [y/n]: " -e REMOVE_UNBOUND
|
||||
done
|
||||
|
||||
if [[ "$REMOVE_UNBOUND" = 'y' ]]; then
|
||||
if [[ "$OS" = 'debian' ]]; then
|
||||
apt-get autoremove --purge -y unbound
|
||||
else
|
||||
elif [[ "$OS" = 'centos' ]]; then
|
||||
yum remove unbound -y
|
||||
elif [[ "$OS" = 'fedora' ]]; then
|
||||
dnf remove unbound -y
|
||||
fi
|
||||
|
||||
rm -rf /etc/unbound/
|
||||
|
||||
echo ""
|
||||
echo "Unbound removed!"
|
||||
else
|
||||
echo ""
|
||||
echo "Unbound not removed!"
|
||||
echo "Unbound wasn't removed."
|
||||
fi
|
||||
fi
|
||||
echo ""
|
||||
|
|
@ -831,27 +782,25 @@ function removeOpenVPN () {
|
|||
echo ""
|
||||
echo "Removal aborted!"
|
||||
fi
|
||||
exit
|
||||
}
|
||||
|
||||
function manageMenu () {
|
||||
clear
|
||||
echo "OpenVPN-install (github.com/Angristan/OpenVPN-install)"
|
||||
echo "Welcome to OpenVPN-install!"
|
||||
echo "The git repository is available at: https://github.com/angristan/openvpn-install"
|
||||
echo ""
|
||||
echo "Looks like OpenVPN is already installed"
|
||||
echo "It 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 " 1) Add a new user"
|
||||
echo " 2) Revoke existing user"
|
||||
echo " 3) Remove OpenVPN"
|
||||
echo " 4) Exit"
|
||||
read -rp "Select an option [1-4]: " option
|
||||
|
||||
case $option in
|
||||
1)
|
||||
# Generates the custom client.ovpn
|
||||
newclient
|
||||
newClient
|
||||
;;
|
||||
2)
|
||||
revokeClient
|
||||
|
|
@ -860,19 +809,19 @@ function manageMenu () {
|
|||
removeOpenVPN
|
||||
;;
|
||||
4)
|
||||
exit
|
||||
exit 0
|
||||
;;
|
||||
esac
|
||||
}
|
||||
|
||||
# Main
|
||||
|
||||
# Check for root, TUN, OS...
|
||||
initialCheck
|
||||
|
||||
# Check if OpenVPN is already installed
|
||||
if [[ -e /etc/openvpn/server.conf ]]; then
|
||||
manageMenu
|
||||
else
|
||||
installOpenVPN
|
||||
fi
|
||||
|
||||
exit 0
|
||||
|
|
|
|||
Loading…
Reference in a new issue