Hi everyone; once I needed to sync with time servers to have a uniform time throughout the domain and steve helped me with this matter by making changes to the registry of ISA with a file on a floppy and then using the command " net time /setsntp:<time srever IP>" and some other steps to sync the time with a specific time server. I also created some allow packet filters for UDP, send-receive, remote 123,local any. It worked fine for one time but since then I have been receiving warnings in the event viewer about ISA and domain controllers not being able to sync with the time servers. I tried the procedure once again, now I have two different times in the domain!!! Please help. Regards, Farshad