updating time

[Guest DEI]

I'm trying to configure a DC to an external source using

http://support.microsoft.com/kb/816042/en-us

 

I am getting event logs

 

Time Provider NtpClient: No valid response has been received from manually

configured peer 131.107.13.100,0x1 after 8 attempts to contact it. This peer

will be discarded as a time source and NtpClient will attempt to discover a

new peer with this DNS name.

 

We have a vendor that manages our firewall and we put in a request yesterday

to open the ntp port and the ip addresses to allow both in and out, but I

have a feeling somewhere someone made a typo. I get this error on the two

addresses I am using for ntp. Is there a way to test this?

 

Thanks!