Re: what to do?

[Duncan <duncan () turnbull gen nz>]

I just generally do a whois on the address and send the ISP some of  
the logs, a brief explanation , and a can you stop please request  
(politely)

Some ISPs are very responsive, others are not, no idea if it actually  
works as generally these seem to come from transient addresses i.e.  
even without contacting the isp I don't see them again but its worth  
a try. Most of the attempts come from Korea and China address space  
so far - although one recently from finland.

Also its hard for ISPs to track down specific addresses from a shared  
server or DHCP pool as they don't always log it, but its worth a  
crack ;-)

However separately I do have an allowed users group so that anyone  
not in it cannot get in - I get a lot of attempts for root to login

Cheers Duncan

On 25/08/2005, at 7:30 PM, Bill Smith wrote:

> Hi Guys,
>
> I noticed that someone is trying to hacker into my
> machine. Please see below is the content of
> /var/log/security.
> what I would like some advice of you guys is, what
> will I do with these people?
> btw, I do have FW
>
> Cheers,
>
> Bill
>
> Aug 24 17:56:28 tiger sshd[8229]: Invalid user golfer
> from 80.68.204.50
> Aug 24 17:56:28 tiger sshd[8231]: Invalid user golfer
> from 80.68.204.50
> Aug 24 17:56:29 tiger sshd[8233]: Invalid user golfer
> from 80.68.204.50
> Aug 24 17:56:30 tiger sshd[8235]: Invalid user golf
> from 80.68.204.50
> Aug 24 17:56:31 tiger sshd[8237]: Invalid user golf
> from 80.68.204.50
> Aug 24 17:56:32 tiger sshd[8239]: Invalid user goose
> from 80.68.204.50
> Aug 24 17:56:32 tiger sshd[8241]: Invalid user goose
> from 80.68.204.50
> Aug 24 17:56:33 tiger sshd[8243]: Invalid user goose
> from 80.68.204.50
> Aug 24 17:56:34 tiger sshd[8245]: Invalid user gorges
> from 80.68.204.50
> Aug 24 17:56:35 tiger sshd[8247]: Invalid user gorges
> from 80.68.204.50
> Aug 24 17:56:35 tiger sshd[8249]: Invalid user gorges
> from 80.68.204.50
> Aug 24 17:56:36 tiger sshd[8251]: Invalid user gosling
> from 80.68.204.50
> Aug 24 17:56:37 tiger sshd[8253]: Invalid user gosling
> from 80.68.204.50
> Aug 24 17:56:38 tiger sshd[8255]: Invalid user gosling
> from 80.68.204.50
> Aug 24 17:56:38 tiger sshd[8257]: Invalid user gouge
> from 80.68.204.50
> Aug 24 17:56:39 tiger sshd[8259]: Invalid user gouge
> from 80.68.204.50
> Aug 24 17:56:40 tiger sshd[8261]: Invalid user gouge
> from 80.68.204.50
> Aug 24 17:56:40 tiger sshd[8263]: Invalid user graham
> from 80.68.204.50
> Aug 24 17:56:41 tiger sshd[8265]: Invalid user graham
> from 80.68.204.50
> Aug 24 17:56:42 tiger sshd[8267]: Invalid user graham
> from 80.68.204.50
> Aug 24 17:56:42 tiger sshd[8269]: Invalid user grahm
> from 80.68.204.50
> Aug 24 17:56:43 tiger sshd[8271]: Invalid user grahm
> from 80.68.204.50
> Aug 24 17:56:44 tiger sshd[8273]: Invalid user grahm
> from 80.68.204.50
> Aug 24 17:56:44 tiger sshd[8275]: Invalid user grandpa
> from 80.68.204.50
> Aug 24 17:56:45 tiger sshd[8277]: Invalid user grandpa
> from 80.68.204.50
> Aug 24 17:56:46 tiger sshd[8279]: Invalid user grandpa
> from 80.68.204.50
> Aug 24 17:56:47 tiger sshd[8281]: Invalid user green
> from 80.68.204.50
> Aug 24 17:56:48 tiger sshd[8283]: Invalid user green
> from 80.68.204.50
> Aug 24 17:56:48 tiger sshd[8285]: Invalid user green
> from 80.68.204.50
> Aug 24 17:56:49 tiger sshd[8287]: Invalid user grey
> from 80.68.204.50
> Aug 24 17:56:50 tiger sshd[8289]: Invalid user grey
> from 80.68.204.50
> Aug 24 17:56:50 tiger sshd[8291]: Invalid user grey
> from 80.68.204.50
> Aug 24 17:56:51 tiger sshd[8293]: Invalid user group
> from 80.68.204.50
> Aug 24 17:56:52 tiger sshd[8295]: Invalid user group
> from 80.68.204.50
> Aug 24 17:56:52 tiger sshd[8297]: Invalid user group
> from 80.68.204.50
> Aug 24 17:56:53 tiger sshd[8299]: Invalid user gryphon
> from 80.68.204.50
> Aug 24 17:56:54 tiger sshd[8301]: Invalid user gryphon
> from 80.68.204.50
> Aug 24 17:56:54 tiger sshd[8303]: Invalid user gryphon
> from 80.68.204.50
> Aug 24 17:56:55 tiger sshd[8305]: Invalid user gucci
> from 80.68.204.50
>
>
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