From @insanity54 on Tue Apr 28 2015 09:02:44 GMT+0000 (UTC)
Foreword: I’m not actually in need of an answer, I’m just trying to help out by populating the FAQ from questions I see on freenode #ipfs
Q: Is there is anything I should know about firewall configuration to get ipfs running?
A: The best thing for your firewall is to forward port 4001
Copied from original issue: https://github.com/ipfs/faq/issues/19