Jim, Thanks for the reply. I figured out the problem just before got your reply. Automic clock sync 2.2 for some reason tries to pickup the proxy configuration from the web browser configuration. If I configure the browser to use a proxy, and configure the Atomic 2.2 to connect directly without using a proxy (using firewall client), the sync fails. My logs show the atomic.exe is trying an anonymous connection and gets 407. If I disable the proxy server in browser atomic 2.2 works just fine. However atomic 2.5 does not have this problem. I just downloaded 2.5, and it works fine even if the browser if configured for proxy. Thanks again for your reply, I appreciate your help. Raj -----Original Message----- From: Jim Harrison [mailto:jim@xxxxxxxxxxxx] Sent: Friday, November 30, 2001 7:53 PM To: [ISAserver.org Discussion List] Subject: [isalist] Re: Atomic clock sync http://www.ISAserver.org 1. the client has to be a secureNAT or FW client 2. create a protocol rule that allows Daytime (TCP) and / or Daytime (UDP) protocols 3. make sure the LAT host can resolve the name of the time source server or use the IP Jim Harrison MCP(NT4, W2K), A+, Network+, PCG http://isaserver.org/authors/harrison/ ----- Original Message ----- From: "Periyasamy, Raj" <psraj@xxxxxxxxxxxx> To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx> Sent: Friday, November 30, 2001 09:06 Subject: [isalist] Atomic clock sync http://www.ISAserver.org List members, I am trying to get the Atomic clock sync working in my clients through ISA. I have opened port 13 in firewall in outbound direction. I have a packet filter that allows port 13 in both TCP and UDP in both directions in my ISA server. The client is running firewall client. When I try to ping the time server using the atomic sync utility, I get an error which says port 13 is not accessible. Can anyone help me Thanks. Raj ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: jim@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: psraj@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')