Javier Henderson writes:

WWW hotspot at the FBO in the near future, everything but port 80 will be
blocked...

You mean outbound connections to ports other than 80 will be blocked?

This will break DNS (udp/53 for queries). And will also prevents us
geeks from checking our mail (the world would be a better place if
we all used character cell MUA's) via interactive logins over ss (tcp/22).

Time to get a little geekier. It's not difficult to work around the
restriction.

--kyler