On Trixie, I am running a service which listens and publishes on a certain port on 127.0.0.1. I want to be able to port-forward all incoming and outgoing TCP traffic between that interface and my externally available public IP address.
Assume that the service is listening and publishing via 127.0.0.1 port 12345.
And if we let "aaa.bbb.ccc.ddd" represent the externally accessible IP address of my machine, I want all TCP traffic to be able to flow in both directions through another port (let's call it port 23456) via aaa.bbb.ccc.ddd and to be managed by the 127.0.0.1:12345 service. This way, anyone on the internet could fully interact with the local service.
One way I could accomplish this would be to write a program which runs locally and transfers all TCP data in both directions between 127.0.0.1:12345 and aaa.bbb.ccc.ddd:23456.
But I'm wondering whether there might be a better, more efficient way to successfully accomplish this under Trixie, perhaps with "iptables", "ncat", or one or more other utilities.
Any ideas?
Assume that the service is listening and publishing via 127.0.0.1 port 12345.
And if we let "aaa.bbb.ccc.ddd" represent the externally accessible IP address of my machine, I want all TCP traffic to be able to flow in both directions through another port (let's call it port 23456) via aaa.bbb.ccc.ddd and to be managed by the 127.0.0.1:12345 service. This way, anyone on the internet could fully interact with the local service.
One way I could accomplish this would be to write a program which runs locally and transfers all TCP data in both directions between 127.0.0.1:12345 and aaa.bbb.ccc.ddd:23456.
But I'm wondering whether there might be a better, more efficient way to successfully accomplish this under Trixie, perhaps with "iptables", "ncat", or one or more other utilities.
Any ideas?
Statistics: Posted by Hippo Man — 2026-03-01 00:04