Re: annoying brute force attack attempt using ssh

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Tim Evans wrote:
Scott van Looy wrote:
  
So I ran
iptables -A INPUT -s 193.239.125.119 -j DROP
    
This is likely a losing battle, as you'll never be able to keep adding
rules for individual IP's.

You can, however, configure iptables to *allow* only a specified list of
IP addresses (i.e., the ones you approve of).

You should also configure sshd to allow only a specified list of users.
man sshd_config for details.

If this is not manageable, take a look at denyhosts
(http://denyhosts.sourceforge.net/)

  
These are script kiddies.  Changing ssh to a non standard port instead of the default 22 will also eliminate the attacks.  This is useful if your users move around and have different ip's.


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