I'm running a LAN behind an 8 port Linksys router. Windows Messenger works
fine, but not for file transfers. Linksys has a dated article about making
Messenger itself work, and there is a MS KB article that is kind-of on
point, but I've used Linksys port triggering (at least the way I think it is
supposed to work; they don't address internal versus external ports in the
settings) with no success. Anyway, I've attempted to open up the ports
mentioned in both articles (just long enough to try to transfer the files),
but no joy. I've tried testing different port combinations on machines
behind the router on my LAN, but still no joy. I may not understand the port
triggering concept, nor how to determine what internal and external ports
need to be opened. I've sent several emails to Linksys with no response.
Any suggestions welcome.