Alternate port for c2s on jabberd2

Question

I'm trying to add a second port for c2s connections to my existing jabberd2. Unfortunately, it wasn't as simple as adding another <port> element to c2s.xml. Can one instance of c2s listen on multiple ports or will I need to add a whole second c2s instance?

If I do need another instance of c2s, resources for setting that up would be very appreciated. Documentation for that scenario seems pretty sparse and mostly restricted to multiple-domain setups, whereas I want connections to either port to be identical in every other respect.

Answer 1

Use port forwarding to forward connections to one port to another port.

i.e. on Linux:

iptables -t nat -A PREROUTING -p tcp --dport 1234 -j REDIRECT --to-port 5222