I'd set up an allow for NTP (123/UDP). You can then set up your DC or ISA to query a time server using "net time /setsnmp:(ip addr. Of clock source) You may find the following article usefull: http://support.microsoft.com/default.aspx?scid=kb;en-us;Q216734 Brad Benz Voice/Data Integration Engineer CCNA, CIPT, CUSE, MCSE inTouch Solutions 208.947.6786 208.378.0208 (fax) bbenz@xxxxxxxxxxxxxxxxxxx http://www.intouchsolutions.cc -----Original Message----- From: Kenneth Schild [mailto:kschild@xxxxxxxxxxx] Sent: Friday, March 29, 2002 2:29 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: atomic clock ? http://www.ISAserver.org I have the same problem and have use this reg modification and I still can not get time sync to work so I to will be watching this posting -----Original Message----- From: Stefaan Pouseele [mailto:stefaan.pouseele@xxxxxxx] Sent: Friday, March 29, 2002 12:00 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: atomic clock ? http://www.ISAserver.org Hi Farshad, the most elegant solution is to make ISA your timeserver for the whole internal network. I suggest you look at ftp://ftp.tacteam.net/isaserver/nettime.zip . All documentation is included. Regards, Stefaan -----Original Message----- From: Farshad Farooji [mailto:farshad@xxxxxxxxxxxxxx] Sent: vrijdag 29 maart 2002 20:15 To: [ISAserver.org Discussion List] Subject: [isalist] atomic clock ? http://www.ISAserver.org Hi everyone; I have problem getting the atomic clock software to ping the time servers ( in order to sync the time on the ISA with those servers ). there is a message saying that there might be problem with port 13 being open or not. but I have created protocol rules and packet filters that would allow both tcp and udp through port 13, and still no luck. I would appreciate your help. Farshad ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: stefaan.pouseele@xxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: kschild@xxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: bbenz@xxxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')