which distribution to choose

Hello,

I would like to set up a firewall to protect a small company network. What
I would like to have is some kind of VPN solution (OpenVPN and ipsec),
iptables firewalling and a secure distribution with some additional
sec-related sofware (tripwire etc.). Also I need to run an Apache for
proxy-requests. 

My question is, which distribution to choose for such a
setup. I would prefer a standard distribution for easy updates and
community support. A specific "security-enhanced" distribution would do it
also, if it is not too "pure" :)

Any suggestions?

Regards
Jochen