I hesitate a little to possibly just add to the noise because I don't really 
know the answer; I'm just hypothecating.

Does a workstation necessarily have a name? In the protocol, I mean. A dumb 
terminal with no name can do telnet. Is there anything to the connection 
request other than "Hi, I'm 192.168.1.1, let's connect"? There's no query where 
the mainframe says "tell me about yourself," right?

I don't recall anything in my 3270 emulator (Tom Brennan's Vista) where I say 
"here is my name to give to the host." There is a space for an "LU name" but 
it's blank and I have no idea what it is for. My Windows has a hostname but 
there is no reason to think it is unique in any given host's clients.

I fear the question may not have an answer.

There's always my favorite approach: disable it and see who screams. (Yeah, you 
could put out some sort of warning broadcast a month in advance.)

Charles


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of don isenstadt
Sent: Tuesday, March 3, 2020 9:32 AM
To: [email protected]
Subject: How to get a workstation name from ip address

Hello..we have many users who are still using port 23 unsecured..so we can 
easily identify them with a display tcpip command po=23.  The list of ip 
addresses needs to be translated to a workstation name because the ip addresses 
are volitile. Ping -a does not work on the mainframe.  We want the command to 
be run from the mainframe.

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