[Opensim-users] about OpenSim GRID security.

[Luisillo Contepomi]

Thank you R.Gunter,
I know what is a Ddos. Normally are doit over a service. Then over
this port. (Email, web, ftp, sshd....). Some times over more than one
service then over more than one port.

A little script for help to detect login failed or force brute over
your robust sending a alert email .
------------------------------------------------
#!/bin/bash

string="Login failed for"

tail -n 0 -F /home/opensim/robust.log | \
while read LINE
do
echo "$LINE" | grep -q $string
if [ $? = 0 ]
then
echo -e "$string found in robust.log on  $HOSTNAME" | mail -s "Alguien
intenta acceder a $(hostname)" abuse at yourdomain.xxx
fi
done

----------------------------------------------
Must be running in a screen or with nohub

nohup ./scriptnombre.sh 0<&- &>/dev/null &

Regards,
Luisillo







2014-05-31 12:25 GMT+02:00 R.Gunther <rigun at rigutech.nl>:
> DDos have nothing todo with ports or services. DDos is very hard to defend.
> You just get so much traffic that the server / services get overloaded and
> stop working correctly.
> Only way to defend against Dos is sofar i knows blocking IP (ranges) with
> the risk you block customers to.
>
>
> On 2014-05-31 11:28, Luisillo Contepomi wrote:
>>
>> We are now in the 0.8 version.. I think the time to talk about
>> security has come.
>>
>> This days we can read about a Ddos over Aviworlds
>>
>> http://www.hypergridbusiness.com/2014/05/aviworlds-shuts-down-again-after-attack/
>>
>> Anyone know what kind of attack was? over what ports or services? Was
>> really a Ddos?
>>
>> I think it would be very interesting for all us to open a serious
>> debate on the safety of our regions. We must start to talk about
>> OpenSimulator security.
>>
>> Regards
>> Luisillo
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>>
>
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