Bandit15
Website URL: http://overthewire.org/wargames/bandit/bandit15.html
Log in to the game server using credentials of bandit14.

Let’s have a look at the task.
The password for the next level can be retrieved by submitting the password of the current level to port 30000 on localhost.
Interesting! Let’s open a telnet shell to the port 30000 on localhost server.
telnet localhost 30000

Let’s enter the password for bandit14 and see the result.
Done!