Home page logo

Nmap Announce mailing list archives

Re: OS identification
From: Theo Boersma <theo () tzeb demon nl>
Date: Thu, 31 Aug 2000 22:33:50 +0000

Doesn't Netcraft check the version string provided by your webserver?
If you're using apache, try /usr/sbin/httpd -L and look for this line:

ServerTokens (http_core.c)
        Determine tokens displayed in the Server: header - Min(imal), OS
or Full
        Allowed in *.conf only outside <Directory>, <Files> or

happy faking!

I have adjusted every HTTP header I can find.  I've hacked my initial
tcp sequence number generator in my kernel.  I've changed my tcp window
size, the default ttl of my ip packets, and everything else I can think
of.  I still cannot convince Netcraft that I'm something I'm not.

If anyone has any idea how Netcraft determines the operating system, I
would be *thrilled* to hear about it.  I've changed everything I know to
change and still can't figure it out.

For help using this (nmap-hackers) mailing list, send a blank email to 
nmap-hackers-help () insecure org . List run by ezmlm-idx (www.ezmlm.org).

  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]