Re: Port Scanning Issues

[sherwyn.williams () gmail com]

For staters haveyou used Nmap also the host that is being scanned do you have a firewall on it, and if so is it setup 
to drop any icmp packets?

If you use nmap with a no ping scann and then look for tcp fiirst then udp you should get some results.

Nmap -P0 -sT 
               -sU for udp.
Sherwyn Williams
Technical Support
The Williams Solutions

-----Original Message-----
From: crumdub12 () gmail com

Date: 25 Jun 2007 21:59:58 
To:pen-test () securityfocus com
Subject: Port Scanning Issues


A Chairde,


   Havin, some issues with scanning stacks on my system.


1. Using Superscan4 ,  I scan stack UDP-TCP 1-65534 , Sometimes I 

get no ports open , another time I get 49159 UDP Ports open, only get port report, no attempt made to open any ports 
... , when get open ports , I always get 49159 UDP Ports ...... , use the scanner at 250msecs , takes around 16 hours 
to finish.


2. Using Languard, Nessus and Retina , get different scans from each tool, any ideas why, how do I find out real ports 
open.. differences can be 10,000 ports



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