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Cannot Telnet from Windows 2000 Client

By The GeekGirl ·
We have a few old Unix boxes that we have to telnet or ftp to from time to time. We can telnet to them from a Windows NT workstation with no problem.
However, we cannot telnet from a Windows 2000 client. It tries to open a connection on port 23, and then eventually gives a message that the connection failed.
I know that Microsoft made major changes to telnet between NT and 2000.

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by Srikrishna In reply to Cannot Telnet from Window ...

yes..even we had the same problems with our old network Routers(Unispehere)..the easiest way is copy the telnet program(under root folder..telnet.exe) from any win nt machine to 2000 machine and use it..:)...

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by The GeekGirl In reply to

Thanks, but I had already tried this and I still have the same problem,

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by tamj123 In reply to Cannot Telnet from Window ...

may the authentication has fail:

The Telnet service uses NTLM authentication, by default.

If you are using Kerberos as the default authentication method in your environment, Telnet clients can't access domain resources, unless you configure the Telnet Server service to not require NTLM.

you can open a CMD prompt and type tlntadmn.exe. After pressing Enter:

Select option 3,Display / change registry settings.

Select option 7, NTLM.

Change the data value from 2 to 0 to disable NTLM.

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by tamj123 In reply to

also maybe:

When you Telnet to a HP-UX or Sun Solaris server using the MS Unix console client with the preferred terminal type set to VTNT, your session is not established.

Both Sun Solaris and HP-UX accept the VTNT terminal type but can not send information to the client during the negotiation.

To work around the problem, set your preferred terminal type to VT100 or ANSI.

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by The GeekGirl In reply to

Both of these are good suggestions--but I had already tried them both.
For the ntlm issue, we are not using kerberos, and I have ntlm turned off in the telnet client.
For the terminal type issue, I have tried vt100 and ansi to no avail.
From my NT workstations, I can telnet to the Unix boxes regardless of the terminal type setting.

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by tamj123 In reply to Cannot Telnet from Window ...

how many users are telnet at sametime?
In Windows2000, the Telnet Server service has a hard coded limit of two simultaneous connections.

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by The GeekGirl In reply to

We are not telnetting to a Win2K server. We are telnetting from a Win2k worktstation to a unix workstation. And only one telnet session at a time. As I said, I can telnet from an NT pc, and then turn around and try the same thing from a 2k pc, and it won't connect.

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by tamj123 In reply to Cannot Telnet from Window ...

last suggestion, upgrade to SP4, if you already did, then try different telnet client software.

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by The GeekGirl In reply to

Sorry...already at SP4....
The OS that I am trying to connect to is an old flavor of HP Unix called RTE-A.
Does that ring a bell with anyone?

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by tamj123 In reply to Cannot Telnet from Window ...

from w2k workstaiton, can you telnet to other server other than that unix box?

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