First of all, I'd recommend upgrading to 0.25.0, which is the latest free version.
Secondly, for trouble-shooting purposes I'd suggest temporarily switching off your router's firewall. If Alt.Binz works fine then, you'll at least have identified the source of the problem; if it doesn't, we need to have a further think.
Thirdly, try pinging the secure server from the command prompt to see if you're getting any response at all over your network.
-Hecks