SMS: Possible Helpdesk TCP and UDP Port Conflicts

ID: Q229097

The information in this article applies to:

Microsoft Systems Management Server version 2.0

SYMPTOMS

Client computers may experience conflicts between ports used by the Systems Management Server Helpdesk function and by other applications. The existence of a conflicting port can manifest itself in various ways, including, but not limited to, general protection (GP) faults on the client computers, application errors, and the Remote Control Agent hanging.

The Systems Management Server Helpdesk function uses the following ports during its operations:


   Purpose                    Port
   -------------------------------

   Verification of Rights     1761
   Remote Control             1762
   Remote Reboot              1761
   Remote Chat                1763
   File Transfer              1764
   Remote Execute             1761

Use the following steps to determine if a conflict exists:

Disable the Systems Management Server Remote Control Agent (Wuser32.exe).

Restart the computer.

Run the command netstat -a.

If the above ports are listed (TCP and/or UDP) then a conflict exists.

CAUSE

The UDP/TCP ports cannot be shared between applications.

RESOLUTION

To resolve this problem, obtain the latest service pack for Systems Management Server 2.0. For additional information, please see the following article in the Microsoft Knowledge Base:

Q236325 SMS: How to Obtain the Latest Systems Management Server 2.0 Service Pack

WORKAROUND

To work around this problem, use a NetBIOS session for Remote Control rather than IP sockets.

STATUS

Microsoft has confirmed this to be a problem in Systems Management Server 2.0. This problem was first corrected in Systems Management Server 2.0 Service Pack 1.

MORE INFORMATION

The new allocated ports are: 2701, 2702, 2703 and 2704. For more information on port numbers, see http://www.isi.edu/in-notes/iana/assignments/port-numbers. The following table describes the new allocated ports:


   sms-rcinfo    2701/tcp   SMS RCINFO
   sms-rcinfo    2701/udp   SMS RCINFO
   sms-xfer      2702/tcp   SMS XFER
   sms-xfer      2702/udp   SMS XFER
   sms-chat      2703/tcp   SMS CHAT
   sms-chat      2703/udp   SMS CHAT
   sms-remctrl   2704/tcp   SMS REMCTRL 
   sms-remctrl   2704/udp   SMS REMCTRL

To install the hotfix, perform the following steps on the Systems Management Server site server:

In the SMS\Site.srv\Platform.bin directory on the site server, replace the Sightnt.dll file with the version obtained from the hotfix.

In the SMS\Site.srv\Maincfg.box\Client.src\Platform.bin directory on the site server, replace the Wuser32.exe, Chat32.exe, and Wslave32.exe files with the version obtained from the hotfix.

At the next Maintenance Manager work cycle, the files are replicated to the SMS\Logon.srv\Platform.bin directory on all Systems Management Server logon servers. Subsequently, new clients get the new .exe file and the existing clients can be updated. To update the existing clients, either manually run Upgrade.bat on each client or follow the instructions in the following article located in the Microsoft Knowledge Base:

Q166771 SMS: How to Force Site-Wide Client Updates

Additional query words: prodsms

Keywords : kbSMS120 kbSMS120bug
Version : winnt:2.0
Platform : winnt
Issue type : kbbug