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Server : Apache/2.4.18 (Ubuntu) System : Linux canvaswebdesign 3.13.0-71-generic #114-Ubuntu SMP Tue Dec 1 02:34:22 UTC 2015 x86_64 User : oppastar ( 1041) PHP Version : 7.0.33-0ubuntu0.16.04.15 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority, Directory : /usr/share/nmap/scripts/ |
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description = [[
Checks if SMTP is running on a non-standard port.
This may indicate that crackers or script kiddies have set up a backdoor on the
system to send spam or control the machine.
]]
---
-- @output
-- 22/tcp open smtp
-- |_ smtp-strangeport: Mail server on unusual port: possible malware
author = "Diman Todorov"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"malware", "safe"}
portrule = function(host, port)
return port.service == "smtp" and
port.number ~= 25 and port.number ~= 465 and port.number ~= 587
and port.protocol == "tcp"
and port.state == "open"
end
action = function()
return "Mail server on unusual port: possible malware"
end