Hi. I have noted a communication problem between ISA and my Internal DNS. It simply responds timed out when i try to do a nslookup. I have 2 external DNS and the communication with them work with no problem. I have created in IP packet Filters new DNS lookup rules applied to my internal and external interfaces but doesn't seem to work. Any ideas of this issue? Thanks. Armando Trevino armando.trevino@xxxxxxxxxxx