Go with a dedicated firewall distro like pfSense
CentOS can certainly do it, but why bother?
-- 
“Don't eat anything you've ever seen advertised on TV”
         - Michael Pollan, author of "In Defense of Food"
Mon Oct  5 16:29:53 UTC 2009 
 Alan McKay <alan.mckay at gmail.com>
Go with a dedicated firewall distro like pfSense
CentOS can certainly do it, but why bother?
-- 
“Don't eat anything you've ever seen advertised on TV”
         - Michael Pollan, author of "In Defense of Food"