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Date:      Thu, 11 Apr 2002 11:56:00 +0100 (BST)
From:      Jan Grant <Jan.Grant@bristol.ac.uk>
To:        Stephen Hoover <shooverfbn@442spot.com>
Cc:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: sshd & tcp wrappers - bad idea?
Message-ID:  <Pine.GSO.4.44.0204111152010.17335-100000@mail.ilrt.bris.ac.uk>
In-Reply-To: <LKEGLDFEGPHGICLNAALGMEOFCFAA.shooverfbn@442spot.com>

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On Wed, 10 Apr 2002, Stephen Hoover wrote:

> I just recently started playing with tcp wrappers and I noticed in the
> config file it says:
>
> "Wrapping sshd(8) is not normally a good idea..."
>
> I was just wondering why that is...

sshd does some fairly intensive calculations when it starts up in order
to generate some random keys. Over time, it will regenerate these;
however, if you stick it inside inetd rather than running standalone,
it'll do all the work for every connection. This takes time and
can exhaust the entropy pool.

jan

-- 
jan grant, ILRT, University of Bristol. http://www.ilrt.bris.ac.uk/
Tel +44(0)117 9287088 Fax +44 (0)117 9287112 RFC822 jan.grant@bris.ac.uk
Strive to live every day as though it was last Wednesday.


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