The password for the next level can be retrieved by submitting the password of the current level to port 30000 on localhost.
Commands you may need to solve this level: ssh, telnet, nc, openssl, s_client, nmap
Okay so i know how to use nc a bit, but lets see the manpage
The format should be nc hostname ports. So I tried.
nc localhost 30000 4wcYUJFw0k0XLShlDzztnTBHiqxU3b3e
but supplying the password wasn’t neccesarry it asks for it after making the connection, so i pasted it again and got the password of level 15 back.\
the password is BfMYroe26WYalil77FoDi9qh59eK5xNr