Redhat for a Firewall?

Just a quick discussion about something that has been on the brain lately…..Am I crazy to think that Red Hat 6.X and beyond can be used as an affective Firewall/VPN solution?

Am I crazy to be thinking that Red Hat is not secure enough for a business to use it as a Firewall? What about Debian? Is that not a better solution? Or does it have something to do with IPTABLES and network compatibility.

Any comments from any Linux and or Security experts is appreciated.

Thanks,

Paul M. Chavez