Security Basics mailing list archives
Re: nmap -sS SYN-SCAN does not find all open Ports?
From: "Arturas Zalenekas" <arturas () zalenekas net>
Date: Thu, 21 Sep 2006 14:43:54 -0500 (CDT)
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 First of all, tell us, which version of nmap you are using. Are you running nmap from Windows or Linux or *NIX like machine !? LIBPCAP version!? If *NIX like, maybe your fw has countermesures agains SYN attack (2 SYNs in 100ms restriction outbound) against a specific port. Then the kernel version. It can be everything. Let us know, how your system looks like and maybe we will give you an correct answer for your problem. Kind regards, Arturas Zalenekas Network Security Engineer and Analyst
Hello, I just used nmap to scan all open Ports on my Watchguard X Firewall. When I use -sT nmap finds all open Ports.When I use -sS nmap does not find some Ports (HTTP-80 and HTTPS-443). Could anybody please explain to me, why nmap can not find those open ports? Best Regards -Benjamin Wagrocki- --------------------------------------------------------------------------- This list is sponsored by: Norwich University EARN A MASTER OF SCIENCE IN INFORMATION ASSURANCE - ONLINE The NSA has designated Norwich University a center of Academic Excellence in Information Security. Our program offers unparalleled Infosec management education and the case study affords you unmatched consulting experience. Using interactive e-Learning technology, you can earn this esteemed degree, without disrupting your career or home life. http://www.msia.norwich.edu/secfocus ---------------------------------------------------------------------------
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Current thread:
- nmap -sS SYN-SCAN does not find all open Ports? bwagrocki (Sep 19)
- Re: nmap -sS SYN-SCAN does not find all open Ports? Arturas Zalenekas (Sep 21)
- <Possible follow-ups>
- Re: Re: nmap -sS SYN-SCAN does not find all open Ports? bwagrocki (Sep 22)
- Re: Re: nmap -sS SYN-SCAN does not find all open Ports? Arturas Zalenekas (Sep 25)
- Re: Re: nmap -sS SYN-SCAN does not find all open Ports? FocusHacks (Sep 26)
- AW: Re: nmap -sS SYN-SCAN does not find all open Ports? Benjamin Wagrocki (Sep 26)
- Re: AW: Re: nmap -sS SYN-SCAN does not find all open Ports? Arturas Zalenekas (Sep 27)
- Re: Re: nmap -sS SYN-SCAN does not find all open Ports? Arturas Zalenekas (Sep 25)