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Date:      Tue, 28 Nov 2000 18:16:42 +0100
From:      Gerhard Sittig <Gerhard.Sittig@gmx.net>
To:        freebsd-security@FreeBSD.ORG
Subject:   Re: sockstat in /etc/security (was: fics)
Message-ID:  <20001128181642.M27042@speedy.gsinet>
In-Reply-To: <Pine.LNX.4.30.0011271701480.32226-200000@calliope.cs.brandeis.edu>; from meshko@cs.brandeis.edu on Mon, Nov 27, 2000 at 05:04:02PM -0500
References:  <Pine.GSO.4.30.0011271505560.19184-100000@nova.fnal.gov> <Pine.LNX.4.30.0011271701480.32226-200000@calliope.cs.brandeis.edu>

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On Mon, Nov 27, 2000 at 17:04 -0500, Mikhail Kruk wrote:
> 
> [ ... sockstat(1) survey ... ]
> 
> I added it to my /etc/security and it seems to work.
> diff file is attached (with the new 4.2 compatible version by Tim)
> 
> [ ... ]
> 
> 78a79,95
> > # Show changes in the open tcp sockets
> > #
> > if sockstat|grep "\*.[0-9 ]*\*.\*"|cut -c1-9,10-18,39-45|sort -u|sort -n +2 > $TMP; then

What do you expect to be the exit status of this command (look at
"man sh" and search for "Pipelines")?  Reading "man sort" and
searching for "exit" and "resu" I don't see any(!) defined return
value for the "sort -n" invocation.

I would even dare to say this /etc/security block shouldn't have
*any* condition for execution.  Changing from or to zero
listening sockets (installing a new machine or disabling all
services) is something you definitely want to know.  Maybe the
suid files' list is the best template to derive from.


virtually yours   82D1 9B9C 01DC 4FB4 D7B4  61BE 3F49 4F77 72DE DA76
Gerhard Sittig   true | mail -s "get gpg key" Gerhard.Sittig@gmx.net
-- 
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