I thought it would be good to start a thread on this to keep track of any progress made on the issue, and for other users who may experience the same problem.
Player Kitten reports that while on her home network, she is unable to connect to an MG game server, and unable to connect to the lobby. She can get to the screen where the servers are listed.
Using the same computer, a Macbook running Mac OS 10.9.5, and the same installation of MG, she is able to connect on a different network.
Her home network uses Verizon as an ISP.
Through troubleshooting with her on IRC (she is *very* easy to work with!), I've determined the problem is either Verizon blocking outgoing ports (but found no information in search engines to verify this), or the router on her home network. Presently, she is not sure if she can gain access to the router to check for blocked outgoing ports.
A third possible reason may be that the firewall on her computer is set up to use different zones.
I have very little experience in configuring a firewall to use zones, but I know that zones can allow different types of access when the computer is connected to one network, but on another network the firewall rules may be different.
I suggest anyone who has experienced a similar problem reply to this forum post or contact the MG team :
https://megaglest.org/contact