Hi,
I was helping a friend set up Broadwave, and we got it working internally, i.e. we could connect from another PC inside his network, and it worked when we connected from another PC across the internet, however when we tried to connect to his music stream from a 3G mobile phone, it refused to connect.
We eventually found out that the network provider blocks port 88 (which is normally used for the kerberos security protocol), and it's also the default port number used by Broadwave.
Instead we chose another port number, in the 8000+ range. We configured Broadwave to use that number, changed Windows Firewall settings, and updated the port forwarding configuration of his internet router.
And this time it worked when we connected from the phone using the 3G data network.
So, I though I would post this useful tip - that the default port of 88 may not necessarily be the right port number to use in all cases!