Re: does anyone use pf.os?

From: Daniel Hartmeier (daniel_at_benzedrine.cx)
Date: 06/23/04

  • Next message: Josh Liu: "OpenBSD Routing Diffculties" 
    Date: 23 Jun 2004 20:50:54 GMT

    On Tue, 22 Jun 2004 21:53:54 -0400, Peter Matulis wrote:

    > Hi, I'm looking for real-world examples on the use of os fingerprinting.
    > Since it is fairly easy to thwart I wonder why the OpenBSD bothered with
    > it. Or maybe I'm missing something? Any comments welcome.

    I'm redirecting TCP connections to port 25 (smtp) with Windows
    fingerprints to spamd. Instantly gets rid of all mails generated
    by Windows worms who use their own SMTP engine (instead of relaying
    through a Unix box). I guess it's only really practical for private
    domains and when none of your peers use Exchange or the like, but
    it works fine for me. It doesn't bite mom an pop with Windows MUAs
    either, as they usually do relay through their ISP.

    Daniel

  • Next message: Josh Liu: "OpenBSD Routing Diffculties"

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