>That's correct. >Also, get a second NIC in that ISA firewall. You bought a firewall, not >a MS squid server. >HTH, >Tom >Thomas W Shinder, M.D. I Thomas, thank you for your answer, but I need a proxy-cache not a Firewall in my scenario. Does ISA support Trasparent proxy ? Sincerely I can't manage how ISA users doesn't need to filter User-Agents... It's a MUST today to prevent spyware and users abuse at all I think filtering useragents btw, do you think Akronix will help for this ? Best Regards