Client that can run behind a firewall Is there any client that can run behind a firewall?  I tried bitcoin-qt and Electrum and neither could work because of blocked ports.  I know I could use a web-hosted solution but I'd prefer a local wallet.dat.
Electrum is perfectly happy running through either standard HTTP ports (443 and 80) or through a SOCKS proxy like Tor. Both options are viewable under the server settings in the main panel, and both will help you break through a restrictive firewall.