46 lines
1.9 KiB
Text
46 lines
1.9 KiB
Text
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[Interface]
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Address = 10.0.0.2/24 # Private IP for the home server in the VPN network
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PrivateKey = #### PRIVATE KEY OF PRIVATE SERVER #####
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Table = 123
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# Enable IP forwarding
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PreUp = sysctl -w net.ipv4.ip_forward=1
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# loose reverse path forwarding validation
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PostUp = sysctl -w net.ipv4.conf.wg0.rp_filter=2
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# Mark new connections coming in through wg0
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PreUp = iptables -t mangle -A PREROUTING -i wg0 -m state --state NEW -j CONNMARK --set-mark 1
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PostDown = iptables -t mangle -D PREROUTING -i wg0 -m state --state NEW -j CONNMARK --set-mark 1
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# Mark return packets to go out through WireGuard via policy routing
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PreUp = iptables -t mangle -A PREROUTING ! -i wg0 -m connmark --mark 1 -j MARK --set-mark 1
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PostDown = iptables -t mangle -D PREROUTING ! -i wg0 -m connmark --mark 1 -j MARK --set-mark 1
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# Push marked connections back through wg0
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PreUp = ip rule add fwmark 1 table 123 priority 456
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PostDown = ip rule del fwmark 1 table 123 priority 456
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# Route traffic to public IP to self to avoid it hitting the network
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PreUp = iptables -t nat -A OUTPUT -d 999.999.999.999 -p tcp -m multiport --dports 80,443 -j DNAT --to-destination 127.0.0.1
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PostDown = iptables -t nat -D OUTPUT -d 999.999.999.999 -p tcp -m multiport --dports 80,443 -j DNAT --to-destination 127.0.0.1
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# ==== Firewall ===============================
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# Allow our expected traffic
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PreUp = iptables -A INPUT -i wg0 -p tcp -m multiport --dports 80,443 -j ACCEPT
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PostDown = iptables -D INPUT -i wg0 -p tcp -m multiport --dports 80,443 -j ACCEPT
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# And pings
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PreUp = iptables -A INPUT -i wg0 -p icmp --icmp-type echo-request -j ACCEPT
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PostDown = iptables -D INPUT -i wg0 -p icmp --icmp-type echo-request -j ACCEPT
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# Block the rest
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PreUp = iptables -A INPUT -i wg0 -j DROP
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PostDown = iptables -D INPUT -i wg0 -j DROP
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[Peer]
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PublicKey = #### PUBLIC KEY OF PUBLIC SERVER #####
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AllowedIPs = 0.0.0.0/0
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Endpoint = 999.999.999.999:51820
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PersistentKeepalive = 25
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