Brute Force Detection + Advanced Firewall Policy

[Julian Elischer]

Arne Woerner wrote:

>--- Hadi Maleki <freebsdlist at nimahost.net> wrote:
>  
>
>>Any BFD/AFP softwares available for FreeBSD 4.10?
>>
>>Im getting flooded with ssh and ftp attempts.
>>
>>    
>>
>What about a "white list"? I mean, three rules that blocks all
>incoming traffic to those ports (21, 22, the others), and then a
>rule for each "good IP" that allows the connection...
>
>Some time ago I have read in this list something about attempts to
>guess a SSH username and password... Maybe u can find that thread
>in the archive via the Websearch interface?
>
>Maybe it helps to disallow password athentication, because DSA
>public key authentication is much more fun for users and admins...
>  
>

possibly look into port-knocking..

>:-))
>
>-Arne
>
>
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