mirror of
https://github.com/Nyr/openvpn-install.git
synced 2024-11-24 05:56:08 +03:00
Can specify the server IP, doesn't send data over VPN by default, can't set a static IP for a client.
This commit is contained in:
andporter
parent
e58addc2c5
commit
24c57c1637
122
openvpn-install.sh
Normal file → Executable file
122
openvpn-install.sh
Normal file → Executable file
@ -80,6 +80,11 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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echo "Tell me a name for the client cert"
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echo "Please, use one word only, no special characters"
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read -p "Client name: " -e -i client CLIENT
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read -p "Static IP: " -e -i xxx.xxx.xxx.xxx STATIC_IP_ADDRESS
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echo "#lastonline=
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ifconfig-push $STATIC_IP_ADDRESS 255.255.255.0" >> /etc/openvpn/ccd/"$CLIENT"
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echo ""
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echo "$CLIENT will be provided the Static IP: $STATIC_IP_ADDRESS"
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cd /etc/openvpn/easy-rsa/
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./easyrsa build-client-full $CLIENT nopass
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# Generates the custom client.ovpn
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@ -131,16 +136,16 @@ if [[ -e /etc/openvpn/server.conf ]]; then
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if pgrep firewalld; then
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# Using both permanent and not permanent rules to avoid a firewalld reload.
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firewall-cmd --zone=public --remove-port=$PORT/udp
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firewall-cmd --zone=trusted --remove-source=10.8.0.0/24
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firewall-cmd --zone=trusted --remove-source=$DHCPIP/24
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firewall-cmd --permanent --zone=public --remove-port=$PORT/udp
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firewall-cmd --permanent --zone=trusted --remove-source=10.8.0.0/24
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firewall-cmd --permanent --zone=trusted --remove-source=$DHCPIP/24
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fi
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if iptables -L | grep -qE 'REJECT|DROP'; then
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sed -i "/iptables -I INPUT -p udp --dport $PORT -j ACCEPT/d" $RCLOCAL
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sed -i "/iptables -I FORWARD -s 10.8.0.0\/24 -j ACCEPT/d" $RCLOCAL
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sed -i "/iptables -I FORWARD -s $DHCPIP\/24 -j ACCEPT/d" $RCLOCAL
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sed -i "/iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT/d" $RCLOCAL
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fi
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sed -i '/iptables -t nat -A POSTROUTING -s 10.8.0.0\/24 -j SNAT --to /d' $RCLOCAL
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sed -i '/iptables -t nat -A POSTROUTING -s $DHCPIP\/24 -j SNAT --to /d' $RCLOCAL
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if [[ "$OS" = 'debian' ]]; then
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apt-get remove --purge -y openvpn openvpn-blacklist
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else
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@ -171,17 +176,11 @@ else
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echo "listening to."
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read -p "IP address: " -e -i $IP IP
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echo ""
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echo "What port do you want for OpenVPN?"
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read -p "Port: " -e -i 1194 PORT
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echo "What is the IPv4 address of the OpenVPN DHCP Server"
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read -p "DHCP Server IP address: " -e -i 10.8.0.0 DHCPIP
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echo ""
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echo "What DNS do you want to use with the VPN?"
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echo " 1) Current system resolvers"
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echo " 2) OpenDNS"
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echo " 3) Level 3"
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echo " 4) NTT"
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echo " 5) Hurricane Electric"
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echo " 6) Google"
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read -p "DNS [1-6]: " -e -i 1 DNS
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echo "What port do you want for OpenVPN?"
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read -p "Port: " -e -i 6876 PORT
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echo ""
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echo "Finally, tell me your name for the client cert"
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echo "Please, use one word only, no special characters"
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@ -218,54 +217,44 @@ else
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./easyrsa gen-crl
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# Move the stuff we need
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cp pki/ca.crt pki/private/ca.key pki/dh.pem pki/issued/server.crt pki/private/server.key /etc/openvpn
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# Make some neeeded folders
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mkdir /etc/openvpn/logs/
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mkdir /etc/openvpn/ccd/
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mkdir /etc/openvpn/scripts/
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#Generate client-disconnect.sh
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echo "#!/bin/sh
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sed -i \"s/#lastonline=\(.*\)/#lastonline=\`date\`/\" ccd/\$common_name" >> /etc/openvpn/scripts/client-disconnect.sh
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chmod +x /etc/openvpn/scripts/client-disconnect.sh
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# Generate server.conf
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echo "port $PORT
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proto udp
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dev tun
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sndbuf 0
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rcvbuf 0
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server $DHCPIP 255.255.255.0
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client-config-dir ccd
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ccd-exclusive
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topology subnet
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keepalive 10 60
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persist-key
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persist-tun
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comp-lzo no
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log logs/openvpn-log.log
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verb 3
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management localhost 5555
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script-security 2
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client-disconnect scripts/client-disconnect.sh
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push 'persist-tun'
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push 'persist-key'
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push 'explicit-exit-notify 3'
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ca ca.crt
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cert server.crt
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key server.key
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dh dh.pem
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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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echo 'push "redirect-gateway def1 bypass-dhcp"' >> /etc/openvpn/server.conf
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# DNS
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case $DNS in
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1)
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# Obtain the resolvers from resolv.conf and use them for OpenVPN
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grep -v '#' /etc/resolv.conf | grep 'nameserver' | grep -E -o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | while read line; do
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echo "push \"dhcp-option DNS $line\"" >> /etc/openvpn/server.conf
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done
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;;
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2)
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echo 'push "dhcp-option DNS 208.67.222.222"' >> /etc/openvpn/server.conf
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echo 'push "dhcp-option DNS 208.67.220.220"' >> /etc/openvpn/server.conf
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;;
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3)
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echo 'push "dhcp-option DNS 4.2.2.2"' >> /etc/openvpn/server.conf
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echo 'push "dhcp-option DNS 4.2.2.4"' >> /etc/openvpn/server.conf
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;;
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4)
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echo 'push "dhcp-option DNS 129.250.35.250"' >> /etc/openvpn/server.conf
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echo 'push "dhcp-option DNS 129.250.35.251"' >> /etc/openvpn/server.conf
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;;
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5)
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echo 'push "dhcp-option DNS 74.82.42.42"' >> /etc/openvpn/server.conf
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;;
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6)
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echo 'push "dhcp-option DNS 8.8.8.8"' >> /etc/openvpn/server.conf
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echo 'push "dhcp-option DNS 8.8.4.4"' >> /etc/openvpn/server.conf
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;;
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esac
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echo "keepalive 10 120
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comp-lzo
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persist-key
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persist-tun
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status openvpn-status.log
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verb 3
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crl-verify /etc/openvpn/easy-rsa/pki/crl.pem" >> /etc/openvpn/server.conf
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# Enable net.ipv4.ip_forward for the system
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if [[ "$OS" = 'debian' ]]; then
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@ -281,26 +270,26 @@ crl-verify /etc/openvpn/easy-rsa/pki/crl.pem" >> /etc/openvpn/server.conf
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# Avoid an unneeded reboot
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echo 1 > /proc/sys/net/ipv4/ip_forward
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# Set NAT for the VPN subnet
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iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to $IP
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sed -i "1 a\iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to $IP" $RCLOCAL
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iptables -t nat -A POSTROUTING -s $DHCPIP/24 -j SNAT --to $IP
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sed -i "1 a\iptables -t nat -A POSTROUTING -s $DHCPIP/24 -j SNAT --to $IP" $RCLOCAL
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if pgrep firewalld; then
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# We don't use --add-service=openvpn because that would only work with
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# the default port. Using both permanent and not permanent rules to
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# avoid a firewalld reload.
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firewall-cmd --zone=public --add-port=$PORT/udp
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firewall-cmd --zone=trusted --add-source=10.8.0.0/24
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firewall-cmd --zone=trusted --add-source=$DHCPIP/24
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firewall-cmd --permanent --zone=public --add-port=$PORT/udp
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firewall-cmd --permanent --zone=trusted --add-source=10.8.0.0/24
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firewall-cmd --permanent --zone=trusted --add-source=$DHCPIP/24
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fi
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if iptables -L | grep -qE 'REJECT|DROP'; then
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# If iptables has at least one REJECT rule, we asume this is needed.
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# Not the best approach but I can't think of other and this shouldn't
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# cause problems.
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iptables -I INPUT -p udp --dport $PORT -j ACCEPT
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iptables -I FORWARD -s 10.8.0.0/24 -j ACCEPT
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iptables -I FORWARD -s $DHCPIP/24 -j ACCEPT
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iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
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sed -i "1 a\iptables -I INPUT -p udp --dport $PORT -j ACCEPT" $RCLOCAL
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sed -i "1 a\iptables -I FORWARD -s 10.8.0.0/24 -j ACCEPT" $RCLOCAL
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sed -i "1 a\iptables -I FORWARD -s $DHCPIP/24 -j ACCEPT" $RCLOCAL
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sed -i "1 a\iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" $RCLOCAL
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fi
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# And finally, restart OpenVPN
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@ -337,16 +326,13 @@ crl-verify /etc/openvpn/easy-rsa/pki/crl.pem" >> /etc/openvpn/server.conf
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echo "client
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dev tun
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proto udp
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sndbuf 0
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rcvbuf 0
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remote $IP $PORT
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resolv-retry infinite
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nobind
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persist-key
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persist-tun
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remote-cert-tls server
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comp-lzo
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verb 3" > /etc/openvpn/client-common.txt
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nobind
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comp-lzo no
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" > /etc/openvpn/client-common.txt
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# Generates the custom client.ovpn
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newclient "$CLIENT"
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echo ""
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