OT: firewall settings for svn and gems

Hello all,
I realize this is off-topic for purely rails.
My net admin has installed a new firewall, and is now implementing tight
lockdown of net access.
Thusly, I have lost svn and gems downoads (and plugins as well I
believe)
until I can give him specifics on what to “allow” for these.

Can someone tell me what protocols/content-types/suffixes should be
allowed
on the firewall to enable my access to svn, gems, and plugins

Thank you, thank you, thank you.

Huh. I would’ve guessed gem used http. As for svn, it’s port 3690.

Joe