Telnet server configuration

balubeto · May 5, 2013

Hi

I have a computer with Windows 7 Ultimate SP1 64 bit called Pippo and I have enabled the Telnet server. Its configuration is:

Code:

C:\Windows\system32> tlntadmn


The settings on localhost are as follows:

Alt key associated with 'CTRL + A':         YES
Idle Session Timeout:                       30 minutes 0 seconds
Max. connections:                           5
Telnet port:                                23
Maximum number of failed login attempts:    3
End Task to disconnect:                     YES
Operation mode:                             Console
Authentication Mechanism:                   NTLM
Domain Defaults:                            Pippo
Status:                                     Running

C:\Windows\system32>

and

http://imageshack.us/photo/my-images/854/telnetclientsgroup.png

I have an other computer with Windows XP SP3 and I have enabled the Telnet client. Its configuration is:

Code:

C:\Windows\system32> tlntadmn


The settings on localhost are as follows:

Alt key associated with 'CTRL + A':         YES
Idle Session Timeout:                       30 minutes 0 seconds
Max. connections:                           5
Telnet port:                                23
Maximum number of failed login attempts:    3
End Task to disconnect:                     YES
Operation mode:                             Console
Authentication Mechanism:                   NTLM
Domain Defaults:                            Pippo
Status:                                     Running

C:\Windows\system32>

The two computers have accounts with different credentials.

If, by the Client, I write:

Code:

C:\Documents and Settings\Account_comune> telnet Pippo

This error is displayed:

Code:

Microsoft Telnet Client

The escape character is 'Ctrl ++'


You are sending information to a remote computer in the Internet Zone. This may not be secure. Send it anyway? (y/n) y


Telnet server could not log you in using NTLM authentication.
Your password may have expired.
Login using your username and password


Telnet Server is configured to use NTLM authentication only.
Contact your administrator to enable username/password authentication.

Telnet Server has closed the connection


Connection to host lost.

C:\Documents and Settings\Account_comune>

How come? How do I display the Login of the Server?

Thanks

Bye

noidea_77 · May 5, 2013

change the Authentication Mechanism to password: http://technet.microsoft.com/en-us/library/ff698995%28v=ws.10%29.aspx

balubeto · May 5, 2013

noidea_77 :

In my Lan, there are computers with different names, they belong to the same Workgroup, each account has different credentials and there is only one computer that acts as a Telnet server. So, where am I wrong?

In addition, I can not use the authentication via password for security reasons.

Thanks

Bye

noidea_77 · May 5, 2013

A workgroup is great, but a domain controller the server can check the credentials against would be even better: http://msdn.microsoft.com/en-us/library/windows/desktop/aa378749%28v=vs.85%29.aspx
How should your server know, that it is a legal client at the moment?

balubeto · May 6, 2013

noidea_77 :

Unfortunately, my network does not have a domain.

So, how can I solve my problem?

Thanks

Bye

noidea_77 · May 6, 2013

balubeto :

You can solve your problem by learning/reading yourself!

balubeto · May 6, 2013

By chance, the Telnet service needs credentials to be able to use NTLM authentication? If so, how do I create these credentials with Windows 7 and XP?

Thanks

Bye

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