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Q194171: App Request UDP Only, "Netstat -an" Displays TCP and UDP

Article: Q194171
Product(s): Microsoft Windows NT
Version(s): WinNT:4.0
Operating System(s): 
Keyword(s): kbnetwork
Last Modified: 09-AUG-2001

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The information in this article applies to:

- Microsoft Windows NT Server version 4.0 
- Microsoft Windows NT Workstation version 4.0 
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SYMPTOMS
========

Winsock applications can specify what UDP ports they listen on. You can use the
NETSTAT utility with the -an option to display the status of a socket. However,
NETSTAT -an may display both UDP and TCP listening on the same socket when only
UDP is bound to the socket.

  NETSTAT [-a] [-n]

   -a  Displays all connections and listening ports. Server-side
       connections are normally not shown.

   -n  Displays addresses and port numbers in numerical form.

CAUSE
=====

This behavior does not affect socket connections, but is simply a display.
problem.

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT version 4.0.


======================================================================
Keywords          : kbnetwork 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : WinNT:4.0
Issue type        : kbbug
Solution Type     : kbpending

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