Task clients unable to communcate with Notification Server (SMP). Ports 50121 and 50124 not binding.
|Article:TECH166793|||||Created: 2011-08-09|||||Updated: 2012-04-05|||||Article URL http://www.symantec.com/docs/TECH166793|
Client machines are unable to communicate with Notification Sever (SMP). They are able to communicate to site servers. The atrshost.exe on the Notification Server also fails to bind on 50121 and 50124 but 50120, 50122, and 50123 bind correctly.
"No connection could be made because the target machine actively refused it 127.0.0.1:50121"
"Credential check for "altadmin" failed: System.Net.WebException: The remote server returned an error: (401) Unauthorized."
Windows System Logs:
Notification Server aliasing (usually includes the NSPrefferedHost option)
The atrshost services attempts to authentication to the local machine mulitple times using the server alias. Microsoft by design put in security measure to prevent programs from doing this to prevent reflection attacks.
Article URL http://www.symantec.com/docs/TECH166793