Free shell account on non-default port?
I don't really know where to put this. I use public hotspots a lot, and I'd like to use, say, irssi but most ports are closed, naturally. I've noticed though, trying to register for a free shell (at shellmix.com) that I can create my account because they use port 30 for registering (and this port is open where I'm at), but I can't actually connect afterwards because they use the default ssh port 22 for that (I know it doesn't make much sense but there you have it.).
So, that made me wonder if there are any free shell providers out there that use non-default ports such as port 30 or maybe even more obscure ports?
Anyone know of such providers?