Outgoing ddos problem

dime111 · 05-02-2013, 03:33 PM

Hi,
We have little problem
We Have some cpanel hosting servers with about 600-700 account each
From time to time we receive report from our data center
That there has been outgoing attack from our server
So how may i find which client is doing this ?
tried Maldet from time to time also going to limit outgoing traffic in iptables
But is there anyway / package which can log the outgoing traffic based on Domain ?
All monitoring tools i know of works on layer 3 which wont help in our case
Thanks for your helps

Kustom42 · 05-02-2013, 04:35 PM

Try doing a google search for:

tshark outgoing http requests

Wireshark can easily capture outgoing HTTP requests on the software level.

Kustom42 · 05-02-2013, 04:36 PM

http://ask.wireshark.org/questions/2...g-http-traffic

dime111 · 05-02-2013, 04:59 PM

Thank
So its actually able to log which domain has sent the packets out ? yes ?
Im going to try it

Kustom42 · 05-02-2013, 05:01 PM

It will only log the interface and the HTTP header. The domain isnt actually sending out the packet, if it has the domain in the header you will be able to see it but an http request is generated and sent via a network interface.

Look for a commonality in teh bad packets then you can drop that traffic regardless of what virtual host is generating it.