72 lines
3.5 KiB
Plaintext
72 lines
3.5 KiB
Plaintext
# Prerequisites:
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# - Have a VPS server at OVH or ionos with Debian
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# - Install https://github.com/angristan/wireguard-install and generate a client
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# - Know the network interface with the 'ip a' command and replace ens3 with the appropriate interface
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# - Know the public address or IP addresses of the clients
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# Backup of the current configuration before modifying it
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# Perform this backup before any modification
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# cp /etc/wireguard/wg0.conf /etc/wireguard/wg0.conf.bak
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# Stopping the WireGuard service before modifying the configuration
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# Make sure to stop the service before modifying the configuration
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# sudo systemctl stop wg-quick@wg0
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# Modification of the WireGuard configuration
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# Open the configuration file to modify it
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# nano /etc/wireguard/wg0.conf
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# Delete the columns what is between [Interface] and ### Client
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# Configuration of the WireGuard interface on the server side
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[Interface]
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Address = 10.66.66.1/24, fd42:42:42::1/64
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ListenPort = 51737
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PrivateKey = X
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# iptables rules to apply after setting up the WireGuard interface
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PostUp = iptables -I INPUT -p udp --dport 51737 -j ACCEPT
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PostUp = iptables -A FORWARD -i wg0 -o ens3 -j ACCEPT
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PostUp = iptables -A FORWARD -i ens3 -o wg0 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
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PostUp = iptables -I FORWARD -i wg0 -s 10.66.66.0/24 -d 10.66.66.0/24 -j DROP
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# NAT rules for client ip1
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PostUp = iptables -t nat -A POSTROUTING -s 10.66.66.2/32 -o ens3 -j SNAT --to-source change-ip1
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PostUp = iptables -t nat -A PREROUTING -i ens3 -d change-ip1 -p tcp --dport 80 -j DNAT --to-destination 10.66.66.2:80
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PostUp = iptables -t nat -A PREROUTING -i ens3 -d change-ip1 -p tcp --dport 443 -j DNAT --to-destination 10.66.66.2:443
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# NAT rules for client ip2
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PostUp = iptables -t nat -A POSTROUTING -s 10.66.66.4/32 -o ens3 -j SNAT --to-source change-ip2
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PostUp = iptables -t nat -A PREROUTING -i ens3 -d change-ip2 -p tcp --dport 80 -j DNAT --to-destination 10.66.66.4:80
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PostUp = iptables -t nat -A PREROUTING -i ens3 -d change-ip2 -p tcp --dport 443 -j DNAT --to-destination 10.66.66.4:443
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# iptables rules to remove when deleting the WireGuard interface
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PostDown = iptables -D INPUT -p udp --dport 51737 -j ACCEPT || true
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PostDown = iptables -D FORWARD -i wg0 -o ens3 -j ACCEPT || true
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PostDown = iptables -D FORWARD -i ens3 -o wg0 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT || true
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PostDown = iptables -D FORWARD -i wg0 -s 10.66.66.0/24 -d 10.66.66.0/24 -j DROP || true
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PostDown = iptables -t nat -D POSTROUTING -s 10.66.66.2/32 -o ens3 -j SNAT --to-source change-ip1 || true
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PostDown = iptables -t nat -D POSTROUTING -s 10.66.66.4/32 -o ens3 -j SNAT --to-source change-ip2 || true
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PostDown = iptables -t nat -D PREROUTING -i ens3 -d change-ip1 -p tcp --dport 80 -j DNAT --to-destination 10.66.66.2:80 || true
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PostDown = iptables -t nat -D PREROUTING -i ens3 -d change-ip1 -p tcp --dport 443 -j DNAT --to-destination 10.66.66.2:443 || true
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### Client ip1
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[Peer]
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PublicKey = X
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PresharedKey = X
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AllowedIPs = 10.66.66.2/32,fd42:42:42::2/128
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### Client ip2
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[Peer]
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PublicKey = X
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PresharedKey = X
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AllowedIPs = 10.66.66.3/32,fd42:42:42::3/128
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# Restart the WireGuard service after modifying the configuration
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# sudo systemctl start wg-quick@wg0
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# sudo systemctl status wg-quick@wg0
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# OPNsense configuration:
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# Follow the steps described in the OPNsense documentation:
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# https://docs.opnsense.org/manual/how-tos/wireguard-client-proton.html
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# Configure port forwarding from the OPNsense router to the local IP of the WireGuard client
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# For example, forward the port from 192.168.1.x to 10.66.66.2 |