auxiliary/scanner/telnet/

setting up the environment:

windows machine:

Control Panel\Programs\Programs and Features >> turn windows features on or off >> check Telnet server
run >> services.msc >> Telnet >> start
Till now you can login with the administrator credential,
to permit another account >> Control Panel\System and Security\Administrative Tools >> computer management >> system tools >> local users and groups >> Groups >> TelnetClients, then add another account
[the server accounts must have password]

Backtrack machine:

you can test the server by :

telnet [server_ip]

scanner/telnet/telnet_version

Used to detect telnet version on remote system

scanner/telnet/telnet_login

This module will test a telnet login on a range of machines and report successful logins

login successful

scanner/telnet/telnet_encrypt_overflow
scanner/telnet/lantronix_telnet_version