[CentOS] Linux router with CentOS

just download one of the firewall distros that have the built in

pfSense (FreeBSD) or IPCop (Linux) are the first 2 to mind.
ClarkConnect is another good one though it may have limited
functionality without paying, I don't know for sure.   But we paid for
it at work and it works really well for doing that.


-- 
“Don't eat anything you've ever seen advertised on TV”
         - Michael Pollan, author of "In Defense of Food"