Ruby利用socket扫描端口

不常用，可以用于学习。

 

  require 'socket'
  include Socket::Constants

  def scan_port
    if $*[0] == nil or $*[1] == nil or $*[2] == nil
      abort "用法示例：ruby #$0 ip地址 开始端口　结束端口 EX:如ruby #$0 localhost 1 1024"
    end
    time = Time.now
    scan $*[0], $*[1], $*[2]
    puts "\n共耗时：#{Time.now - time}秒"
  end

  private
  def scan(address, start_port, end_port)
    threads = []
    for port in start_port..end_port
      threads << Thread.new(port) do |theport|
        begin
          socket = Socket.new(AF_INET, SOCK_STREAM, 0) #生成新的套接字
          sockaddr = Socket.pack_sockaddr_in(theport, address)
          socket.connect(sockaddr)
          puts "Port:#{theport} is Opend!\n"
          socket.close
        rescue
        end
      end
    end
    threads.each {|thr| thr.join}
  end

 

输入如下命令即可：

 

ruby script/server localhost 1 500

 

示例输出：

 

Port:80 is Opend!
Port:88 is Opend!
Port:135 is Opend!
Port:443 is Opend!
Port:445 is Opend!

共耗时：0.782秒

 

评论

1 楼 Cresting 2009-12-17  

看不太懂，$*[0],$*[1],$*[1],#$0是什么东西?
ruby script/server localhost 1 500可以运行出这个结果么? 楼主能不能详细说说？