I tried to host a game for myself and another player over the net just using direct IP connection.
I'm accessing the net through a wireless lan (hub plugs into the phone socket, then broadcasts wireless).
My firewall has all the necessary exceptions. My anti-virus isn't doing anything.
However, when my friend tries to connect he gets and error saying "Server connection was lost or could not be established!
Disconnected And Not Discovering". I get the same trying to connect to him.
I'm seeing a lot of other people with problems about ports - not sure if that's the problem but I know virtually nothing about ports/port forwarding/whatever.