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Date:      Mon, 27 Oct 2003 09:26:20 -0700
From:      Brett Glass <brett@lariat.org>
To:        Jarkko Santala <jake@iki.fi>, Kris Kennaway <kris@obsecurity.org>
Cc:        security@freebsd.org
Subject:   Re: Best way to filter "Nachi pings"?
Message-ID:  <6.0.0.22.2.20031027092251.04ad3dd8@localhost>
In-Reply-To: <20031027120642.A96390@trillian.santala.org>
References:  <200310270731.AAA23485@lariat.org> <20031027080240.GA9552@rot13.obsecurity.org> <20031027110203.B96390@trillian.santala.org> <20031027093435.GA6111@rot13.obsecurity.org> <20031027120642.A96390@trillian.santala.org>

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At 03:17 AM 10/27/2003, Jarkko Santala wrote:

>Blocking
>all ping packets to improve security is nothing more than security through
>obscurity. It may hide your system against the simplest ping probes, but
>it does nothing to improve security as such.

In our case, there's a more compelling reason.

Some of our customers' system administrators have utilities
which ping their servers from their home Internet connections
to make sure everything's working. If I were to block pings,
all of these guys' (and gals') pagers and cell phones would go 
off at once. I'd be beseiged with demands to remove the block 
immediately.

--Brett



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