We've got a small company with about 50 employees. Currently we are about to upgrade our Internet connection to Metro Ethernet and along with that are looking at replacing our Linux based firewall with an ASA 5510. The question however is what solution is best: the 5510 by itself, the 5510 with AIP module, or the 5510 with the CSC10 module.
Currently our existing firewall just does NAT, Spam Scanning, and Transparent web proxy.
Any help is appreciated.