Date: Tue, 19 Apr 2005 13:33:46 +0200 From: peceka <peceka@gmail.com> To: Dominic Marks <dom@helenmarks.co.uk> Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD and NMAP Message-ID: <f0f70e5e050419043335bb87ba@mail.gmail.com> In-Reply-To: <200504191216.24362.dom@helenmarks.co.uk> References: <f0f70e5e0504190411241c2433@mail.gmail.com> <200504191216.24362.dom@helenmarks.co.uk>
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On 4/19/05, Dominic Marks <dom@helenmarks.co.uk> wrote: > On Tuesday 19 April 2005 12:11, pck wrote: > > Hi, > > > > How can i hide from nmap that my OS is FreeBSD? Is this possible? >=20 > # sysctl -ad | grep random_id > net.inet.ip.random_id: Assign random ip_id values > # echo 'net.inet.ip.random_id=3D1' >> /etc/sysctl.conf After that: Interesting ports on 192.168.1.248: (The 1643 ports scanned but not shown below are in state: closed) Port State Service 22/tcp open ssh Device type: general purpose Running (JUST GUESSING) : FreeBSD 5.X|4.X (95%), Apple Mac OS X 10.1.X (88%), OpenBSD 3.X|2.X (88%), Apple Mac OS 8.X (85%) Aggressive OS guesses: FreeBSD 5.0-RELEASE (95%), Apple Mac OS X 10.1.5 (88%), FreeBSD 4.3 - 4.4PRERELEASE (88%), FreeBSD 5.0-RELEASE (x86) (88%), FreeBSD 5.1-CURRENT (June 2003) on Sparc64 (88%), OpenBSD 3.0 or 3.3 (88%), Apple Mac OS X 10.1.4 (Darwin Kernel 5.4) on iMac (86%), FreeBSD 4.5-RELEASE (or -STABLE) through 4.6-RC (X86) (86%), FreeBSD 4.7-RELEASE (86%), FreeBSD 5.0-RELEASE or -CURRENT (Jan 2003) (86%) No exact OS matches for host (test conditions non-ideal). Uptime 0.003 days (since Tue Apr 19 13:22:41 2005) So it didn't help much... Best Regards, p.
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