cannot update freepbx modules (proxy)

[otherwise777]

Hello,

I just installed asterisknow, and im configuring freepbx,
i am using this guide for it: http://www.freepbx.org/support/document ... stallation

at step 2 i couldn't ping " http://www.google.com" because i'm behind a proxy,
at step 4 i couldn't update it because i'm behind a proxy.
i tried edditing some conf files at step 11 in this guide: http://wiki.centos.org/TipsAndTricks/YumAndRPM
but that didn't work either

has this problem occured somewhere before?
and are there other ways to update when im behind a secured proxy?
or can i configure this proxy somewhere

[Modev]

I'm assuming you're not in control of this proxy server? It wouldn't make sense that you wouldn't have access to modify your proxy's rules, unless you weren't in control of it. Do you have a way of accessing the outside world without it?