I have only been tinkering with IPFS for a few days. My Internet access is through an apartment community WiFi that does Network Address Translation (NAT). It is firewalled, of course. Port forwarding is not available. Also, each of my computers is running a firewall. (I use OpenBSD, FreeBSD, Scientific Linux and Ubuntu). I would like to distribute ~12GB of MP3 files to the world (this is not pirated music - Creative Commons license or public domain is okay). Will IPFS function normally if incoming ports are blocked?