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Re: Maybe bug, with -sP und ASA sending RST for denied networks
From: Pluto <pluto () stderr de>
Date: Wed, 24 Oct 2007 12:44:01 +0200

On Mon, Oct 22, 2007 at 04:47:12PM -0700, Fyodor wrote:
On Thu, Oct 18, 2007 at 11:22:01AM +0200, Pluto wrote:
  Salve,

  maybe old stuff, just happened to me and can't find something in the docs
or elsewhere. When dong the -sP with an ASA in between you and the target,
the tcp-syn on port 80 will be answered by a RST from the ASA, thereby making
nmap think the host is responding and alive. Of course the results of such
a scan are basically useless then.

  Would it be possible to ignore RST in such a szenario? Or have a command
line switch to trigger this?

That can be a problem with port 80.  You may want to try a different
type of ping scan (such as ICMP only) or change the TCP ping probe
port(s).

  Ok, my error, seems like I do write a very stupid mail every few years, this
has been it for this period :( Could have seen in the manpage that the -PE 
disables the syn on port 80.

  Gruss

-- 
  Pluto   -   SysAdmin of Hades
  Free information! Freedom through knowledge. Wisdom for all!! =:-)
  PGP://0xB4BBB4A9?524CB500A8F3EAA2&6A3E5272F9072A17  ICQ: 286852401

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