Re: Dictionary attack

From: Poul-Henning Kamp (none@phk--phk.freebsd.dk.lh.bsd-dk.dk)
Date: Wed 21 Feb 2007 - 10:05:31 CET

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To: bsd-dk@bsd-dk.dk
Subject: Re: Dictionary attack 
From: "Poul-Henning Kamp" <none@phk--phk.freebsd.dk.lh.bsd-dk.dk>
Date: Wed, 21 Feb 2007 09:05:31 +0000

In message <none@11354.217.157.0.66.1172043960.squirrel--bornholmermail.dk.lh.bsd-dk.dk>, "Ebbe Hj
orth" writes:
>Hej,
>
>OS: FreeBSD 6.2
>
>Jeg har over 1000 linier i min daglige security output fra i nat, hvor
>forskellige brugernavne er blevet forsøgt at komme ind via ssh. Er der
>nogen måde jeg kan undgå dette, via ipfw måske?

Flyt din sshd til et andet portnummer.

Og nej, det er ikke security by obscurity.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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