Solved

DDOS attack

Posted on 2014-03-04
4
55 Views
Last Modified: 2016-01-02
Hi all

The internet connectivity on my network has recently been disrupted by a DDOS attack.  My firewall logs UDP floods coming to our IP address that faces the world when we are on the net.  This then causes our internet to fail completely.  I work at a school where a lot of the students have their own devices.  Im pretty sure that the attack is being initiated from within our network maybe using a program or proxy of some sort that comes back and floods that IP from a number of different IPs.

What I want is to monitor is the network programs that are being run on devices connected to our network.  I was thinking that I could use wireshark on the network to capture all of the traffic during an attack.  What I dont know is what kinds of traffic to filter for withing wireshark.  We have spanning tree enabled on the network devices so wireshark should work just fine.

Any suggestions would be appreciated
0
Comment
Question by:gilmanschool
4 Comments
 
LVL 24

Accepted Solution

by:
Ken Boone earned 200 total points
Comment Utility
If you are experiencing a DDOS attack coming from the outside then you might be able to figure it out.  Wireshark is going to give you so much data and its not the best at collaborating the data for this.   If you have netflow on your internet router or firewall you can pull down a program like scrutinizer and it will show you graphically who is attacking and on what ports.  You can then call your isp and see if they can filter this out on their end to free up your circuit.
0
 
LVL 25

Assisted Solution

by:madunix
madunix earned 200 total points
Comment Utility
Check http://hakin9.org/is-ddos-still-a-threat/
I think it's wise to look at dedicated appliances such as cisco fortinet or juniper which are made to detect and defend. Try with http://www.fortinet.com/products/fortiddos/index.html
0

Featured Post

Maximize Your Threat Intelligence Reporting

Reporting is one of the most important and least talked about aspects of a world-class threat intelligence program. Here’s how to do it right.

Join & Write a Comment

This article explains in simple steps how to renew expiring Exchange Server Internal Transport Certificate.
Find out what Office 365 Transport Rules are, how they work and their limitations managing Office 365 signatures.
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

763 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now