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Forwarding ports to other devices via Wireguard doesn't work (lemmy.world)

submitted 10 months ago by kokesh@lemmy.world to c/selfhosted@lemmy.world

3 comments fedilink hide all child comments

I've made wireguard tu nel out to VPS (to circumvent CGNAT). Dns server works, web server + Gitea, Jellyfin,.. works. All the stuff running on my thin Ubuntu client. What doesn't work is forwarding the RDP port to my windows machine. No firewall on the windows machine. Used to work before CGNAT got enabled by my ISP. I've tried also UDP port, but still no connection.

Here is my wg0 conf:

[Interface] PrivateKey = ..... Address = 10.1.0.2/24

PostUp = iptables -t nat -A PREROUTING -p tcp --dport 3389 -j DNAT --to-destination 192.168.1.21:3389; iptables -t nat -A POSTROUTING -p tcp --dport 3389 -j MASQUERADE

PostDown = iptables -t nat -D PREROUTING -p tcp --dport 3389 -j DNAT --to-destination 192.168.1.21:3389; iptables -t nat -D POSTROUTING -p tcp --dport 3389 -j MASQUERADE

[Peer] PublicKey = ........ AllowedIPs = 0.0.0.0/0 Endpoint = ...oraclevpsIP....:55108 PersistentKeepalive = 25

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[–] bookworm@feddit.de 0 points 10 months ago* (last edited 10 months ago)

I would advise that you instead also connect the Windows machine to the VPS with WireGuard as 10.1.0.3, basically mirroring what you've done on the Ubuntu server. The routing will be a mess otherwise. Another option is running the WireGuard tunnel on your gateway with something like OPNsense.