on the previous release 0.2.2, I found the command line version "bitshares_client.exe". If I run it, the windows firewall will prompt me for incoming traffic. But the gui version doesn't cause any prompt. It means the gui client doesn't accept any incoming connection, I think there may something wrong with it. @bytemaster
some advice, you may also release the command line version with the windows gui client, sometimes the command shell will get us more useful information.