I am so confused, I hope someone will help.
At our house we have three PCs (all running Ubuntu or Linux Mint) as part of a wireless network. The firewall is disabled on each PC. The Actiontek modem/router does have a firewall built into it. It also broadcasts a wireless signal to two of the PCs. The third PC is directly connected to the router.
But, in RetroShare, I can't connect any of the PCs to each other. I don't know how to diagnose this problem.
I read a lot about port forwarding, but since all these PCs are "behind" the same firewall - the one in the modem/router - I don't think that could be an issue.