Penetration Testing mailing list archives
Re: Port Scanning Issues
From: Vijay <zion.den () gmail com>
Date: Tue, 26 Jun 2007 18:24:48 +1000
Hi Chaidre,You could use the Connect scan option in nmap to get a more reliable scan. saying that i just realize that there are firewalls/load balancers that will respond with a SYN-ACK for every port, in that case i would say only when you send a data part of the connection after the ACK will you know if the port is really open. (people correct me if i am wrong). Hope it was of some help.
Regards Vijay crumdub12 () gmail com wrote:
A Chairde, Havin, some issues with scanning stacks on my system.1. Using Superscan4 , I scan stack UDP-TCP 1-65534 , Sometimes Iget 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 ------------------------------------------------------------------------ This List Sponsored by: Cenzic Are you using SPI, Watchfire or WhiteHat? Consider getting clear vision with Cenzic See HOW Now with our 20/20 program! http://www.cenzic.com/c/2020 ------------------------------------------------------------------------
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Current thread:
- Port Scanning Issues crumdub12 (Jun 25)
- Message not available
- Port Scanning Issues Steinar Watne (Jun 26)
- Message not available
- Re: Port Scanning Issues sherwyn . williams (Jun 26)
- Re: Port Scanning Issues Jamie Riden (Jun 26)
- Re: Port Scanning Issues Vijay (Jun 26)
- Re: Port Scanning Issues Lee Lawson (Jun 26)
- <Possible follow-ups>
- Re: Port Scanning Issues ebk_lists (Jun 26)