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It has N different kinds of "stealth" scans that all produce the same kernel of valuable information, it has an elaborate (and, against most corporate networks from external vantage points, not particularly accurate or helpful) OS detection scheme, it runs scripts, it produces stdout and file output in a variety of complicated formats (it really just wants to be a service hooked up to a database), it runs scripts, IT RUNS SCRIPTS, come on. This isn't a serious argument. You just like nmap. That's fine; I think nmap is impressive too.

Oh, and it takes _for_ _ever_ to run. I'll pastie the 50 line EventMachine scripts I race it with when people on my team get stuck waiting for 12-hour nmap runs.

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class HostProbe module Probe attr_accessor :bp def connection_completed @win = true end def unbind self.bp.closed(self, @win) end end def closed(obj, won) @inflight_now -= 1 port = @inflight_q.delete(obj) if won puts "%TARGET-LISTENING: #{ @target }:#{ port }" end fill() end def sweep Generator.new do |g| (1..65535).each {|port| g.yield port} end end def fill @inflight_now.upto(@inflight_max) { @inflight_now += 1 if(port = @sweep.next) EventMachine::connect(@target, port, Probe) do |c| c.bp = self @inflight_q[c] = port end end } end def initialize(host, opts={}) @target = host @sweep = sweep @inflight_q = {} @inflight_now = 0 @inflight_max = opts[:inflight_max] || 10 fill() end end EventMachine::run { HostProbe.new(ARGV[0]) }