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Port forward to different IP based on destination address in opnsense (lemmy.world)

submitted 2 years ago by doctorzeromd@lemmy.world to c/selfhosted@lemmy.world

12 comments fedilink hide all child comments

cross-posted from: https://lemmy.world/post/14180956

Hello all you lovely people!

I'm trying to figure out if I can port forward to different servers based on the destination domain.

I have a domain with a wildcard cert and I'd like to be able to route all traffic headed towards "1.domain.com" to a server I'm calling "1". I'd still like traffic headed to domain.com to go to where it's currently going, we can call this server "0", and to be able to have a 2.domain.com or 3 or 4 in the future.

I thought that having a port forward rule with: interface: WAN Protocol: any source: any destination: a url alias including 1.domain.com redirect target ip: local ip

Would work, but it doesn't seem to. Any tips?

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[–] ad_on_is@programming.dev 6 points 2 years ago (1 children)

you only have one IP. As you rightfully said, reverse proxy does only http(s), port 80/443. this works because of the nature how http requests work. They carry the hostname as part of the protocol (request headers). SSH is a whole other story, since the client does not send the hostname as part of the protocol, only the IP and the port.

What you can do is forward different ports to different machines... 2021 -> server1, 2022 -> server2, etc.

[–] bjoern_tantau@swg-empire.de 2 points 2 years ago* (last edited 2 years ago)

For SSH the ProxyJump directive is awesome. Have one server reachable from outside and then use it to jump to all the others.