Here's an example "hit" I got with a "Search"
https://www.subsim.com/radioroom/sho...15#post1124615
from 2009 though, so some of the links referenced will not be active any longer. but port forwarding is the key. There are more "modern" posts on the site here about doing this, but I apparently did not use good terms in my search...
btw, use your search engine (duckduckgo, google, bing, whatever) with "site:subsim.com/radioroom SearchTerm1 SearchTerm2..." and see what you see...