6 replies to this topic

[JMC31337]

========================

require 'rubygems'
require 'net/ping'
puts "Enter IP Address to Scan:"
#ipaddress = gets

1.upto(65536)
{
|@x|
if Net:: PingTCP.new(#ipaddress,#x)
puts "Response/Port Open #x"
else
puts "No Response / Port closed #x"
}
exit 

===========================
CODED BY: JMC31337

Edited by WingedPanther, 30 January 2009 - 08:27 AM.
add code tags (the # button)

[WingedPanther]

Moved to correct thread, code tags added.

[shmitty]

This isn't a portscanner. The code doesn't even execute.
If you want a portscanner, you've got to use sockets.

Try this code:

require 'socket'

puts "Enter IP Address to Scan:"
ipaddress = gets

1.upto(1024) {|port|
  begin
    TCPSocket.open(ipaddress.chop, port)
    puts "Response/Port Open: #{port}"
  rescue
    # uncomment the following line to show closed ports (noisy!)
    #puts "No Response / Port closed: #{port}"
  end
}

[JMC31337]

yup yur right... good lookin out Shmitty... guess i should proof read my own stuff once in awhile... Obviously RUBY aint my thang...

[shmitty]

No worries jmc, I was looking for a simple portscanner code snippet in ruby for a project I was working on and this is about the first one that pops up on Google.

By the way, if you don't want to mess around with non blocking sockets but you do want a timeout on that TCP connect attempt you can add the following code:

require 'socket'


puts "Enter IP Address to Scan:"

ipaddress = gets


1.upto(1024) {|port|

  begin

    timeout(5) do

      TCPSocket.open(ipaddress.chop, port)

    end

    puts "Response/Port Open: #{port}"

  rescue Timeout::Error

    # uncomment the following line to show closed ports (noisy!)

    #puts "No Response / Port closed: #{port}"

  rescue

    # uncomment the following line to show closed ports (noisy!)

    #puts "No Response / Port closed: #{port}"

  end

}

Kind of an easy way in Ruby to put a timer on stuff.

[JMC31337]

interesting... so what does rescue do?? is that Ruby's lil Exception Error Catching routine??

[shmitty]

Yes that's correct.

More info in the Ruby docs
ruby-doc.org/core-1.9/classes/Exception.html