Nmap NSE net: pop3-brute

Tries to log into a POP3 account by guessing usernames and passwords. SYNTAX: userdb: The filename of an alternate username database. pop3loginmethod: The login method to use: ''USER'' (default), ''SASL-PLAIN'', ''SASL-LOGIN'', ''SASL-CRAM-MD5'', or ''APOP''. unpwdb.passlimit: The maximum number of passwords 'passwords' will return (default unlimited). unpwdb.userlimit: The maximum number of usernames 'usernames' will return (default unlimited). unpwdb.timelimit: The maximum amount of time that any iterator will run before stopping. The value is in seconds by default and you can follow it with 'ms', 's', 'm', or 'h' for milliseconds, seconds, minutes, or hours. For example, 'unpwdb.timelimit=30m' or 'unpwdb.timelimit=.5h' for 30 minutes. The default depends on the timing template level (see the module description). Use the value '0' to disable the time limit. passdb: The filename of an alternate password database.