Hardware Firewall

Hello,

I currently have a PDC, BDC, 1 stand alone with Proxy 2.0 with a Cisco 1720 router. T1 connection. Our school also purchased Websense that runs off our Proxy Server which is our Internet web-site filter…I’m currently looking for a hardware firewall that will work with Websense..

Have any suggestions, also on a very limited budget..

Phill