[Core4Technologies]

I would second the Cisco ASA firewall line or a Juniper, however on a budget, would not recommend PFsense firewalls. There have been too many problems where we have replaced them in customer setups for either a Cisco, Juniper, or a Mikrotik RouterOS based device. Mikrotik routerboard systems are fairly inexpensive, and you can get a good performing device for a relatively low price. They are Linux based, and have been rock-solid for years.