annoying brute force attack attempt using ssh

Tim Evans tkevans at tkevans.com
Thu May 15 11:23:15 UTC 2008


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/)

-- 
Tim Evans, TKEvans.com, Inc.    |   5 Chestnut Court
UNIX System Admin Consulting    |   Owings Mills, MD 21117
http://www.tkevans.com/         |   443-394-3864
http://www.come-here.com/News/  |   tkevans at tkevans.com





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