Re: Question bruteforcing

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On Mon, 29 May 2006 17:03:46 -0500, Mike C <Mikec1@xxxxxxxxxxxx>
opined:
> What exactly is bruteforcing and is their away to stop it in fedora 
> without useing a router or firewall box?
> 
> Thanks for any help
> 
It's an attempt (usually with hacker software) to crack the root
password by trying with a burst of many different password forms.

The best defense that I know of (and I use) is swatch. Swatch watches
a log for RegEx patterns and then executes a script when it is
matched (such as immediately adding a rule to IPTables. This way the
potential hacker only gets one shot.

More fundamentally, sshd should only be permitted if absolutely
necessary and then restricted to known IPs that need ssh access.

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