[Tfug] Stopping repeated login attempts

Jeff Breadner jeff at breadner.ca
Tue Jan 26 19:44:37 MST 2010


U



On Jan 26, 2010, at 6:07 PM, brandon <brandons.daemon at gmail.com> wrote:

> On Mon, Jan 25, 2010 at 10:57 PM, Louis Taber <ltaber at gmail.com>  
> wrote:
> Hi,
>
> Looking at my log files I am getting repeated login attempts from  
> China.  I changed my NAT port setting in the router and it slowed  
> down for a few hours.  What is the best way for dealing with this?   
> I don't think a manual solution will be the best.
>
> http://www.okean.com/antispam/iptables/rc.firewall.china has a list  
> of Chinese IP addresses for blocking spam.
>
> Denyhosts looks interesting:  http://stats.denyhosts.net/stats.html
>
> What works best for the effort needed to set it up?
> What is going to require the least long term maintenance?
>
> Thanks.  - Louis
>
>
>
>
> _______________________________________________
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>
> I agree with what others have said here. For ~2 years now I have  
> monitored the logs for my current employer. We run sshd on a non  
> standard port and I have not seen one failed login attempt. Non  
> standard port along with only allowing ssh login with keys has  
> worked really well for us. I have also thought about Fail2Ban but  
> there is always the possibility that a half awake admin could lock  
> themselves out at 2 am from some random IP address.
>
> -Brandon
> _______________________________________________
> Tucson Free Unix Group - tfug at tfug.org
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