Microsoft KB Archive/831703

= Firewall Software Reports Anomalous UDP Packets from 65.54.240.61 Port 7001 =

Article ID: 831703

Article Last Modified on 11/13/2003

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APPLIES TO


 * Microsoft Windows Messenger 4.0
 * Microsoft Windows Messenger 4.5
 * Microsoft Windows Messenger 4.6
 * Microsoft Windows Messenger 4.7
 * Microsoft Windows Messenger 5.0
 * MSN Messenger 5.0
 * MSN Messenger 6.0

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SYMPTOMS
Your firewall software may report anomalous User Datagram Protocol (UDP) packets from a source IP address of 65.54.240.61 on port 7001. For example, the report may look similar to the following report:

65.54.240.61 port 7001 to  port 1052



CAUSE
This behavior may occur if you are using Microsoft Windows Messenger version 4.0 or later, or MSN Messenger 5.0 or later. The behavior occurs because Messenger uses a server at this IP address to detect if your computer is behind a Network Address Translation (NAT) or firewall device. This test helps to determine if the NAT or firewall device supports connections that permit video conferencing, voice (computer-to-computer calling), or phone calling (computer-to-phone calling). Because of the test, several different kinds of programs can work through the existing infrastructure.



RESOLUTION
No action is required because this behavior causes no adverse effects.

Additional query words: unsolicited UDP probes traffic 1052

Keywords: kbinfo KB831703

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