App Request UDP Only, "Netstat -an" Displays TCP and UDP (194171)

The information in this article applies to:

Microsoft Windows NT Server 4.0
Microsoft Windows NT Workstation 4.0

This article was previously published under Q194171

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.

Modification Type:	Major	Last Reviewed:	8/9/2001
Keywords:	kbbug kbnetwork KB194171