Greetings: I am experiencing real odd behaviors with firewall clients not being able to access or even able to perform an update when a site and content rule is created in where an allow or deny destination set is specified in the rule. This behavior is weird to me because everything seems to work while the is little load on the server (typically < 20 connected firewall clients). Once the connected client load increases the WSP and firewall clients seem to loose connectivity with the ISA server. This is driving me crazy as I've researched this everywhere with no luck. Any ideas on the matter would be welcomed and appreciated. The server is running Win2k sp2 and ISA sp1 in integrated mode. Thanks in advance for your insight.