I'm using Remobo to connect to a server but when I try to connect in Minecraft it'll just time out.
Beyond the basics (make sure the server is up, make sure you can ping the server, etc), have whoever is running the server make sure that it's not bound to a particular IP address. Basically, when the server starts up, you (or whoever's running it) should see the following line in the console:
If it says anything else other than *:25565 there, then the server is binding to a particular IP. Ask your server admin if they can try changing the server-ip line of the server.properties configuration file to their Remobo IP address (which I believe begins with 7.x.x.x -- not sure) or just blanking it out -- so the file should have one of the two following lines:
Of course, replace "188.8.131.52" with the server's Remobo IP address :)
The potential downside to this is that the server may no longer accept connections directly through the router (i.e. if the admin had the server IP set to their public IP address, the MC server may no longer recognize connections coming in directly from the internet, and all users would need to connect using Remobo).