Solved

Preventing DOS attack on Ubuntu gaming server

Posted on 2015-02-24
3
279 Views
Last Modified: 2015-02-24
A friend is running Jedi Knights - Jedi Academy on an Ubuntu server. The gaming server seems to occasionally get slammed by a DOS attack and the causes problems for all the gamers. What are some methods that could be employed on the server itself to prevent the DOS attacks from interfering with the game? And what kind of logging on the server might identify the origin of the attacks? Thank you.
0
Comment
Question by:amigan_99
3 Comments
 
LVL 61

Expert Comment

by:gheist
ID: 40629207
Send 10000 packet pcap file. Theoretizing about and around does not help attacked.
Most DOS attacks nowadays are distributed, and you are unlikely to trace source.
0
 
LVL 28

Accepted Solution

by:
serialband earned 500 total points
ID: 40629395
Are you even sure it's a DDOS or a DOS attack?  Is the server just getting overloaded?
Check the server load average first with uptime or top.

Check your connections and see if you're being bombarded.
netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n


http://www.liquidcomm.net/news/tech_tips/linux_os/how-to-manage-a-ddos-or-dos-attempt-directed-at-your-linux-server.html

http://www.linuxsecurity.com/content/view/121960/49/

     
If you are getting bombarded, then limit the connections
http://rockdio.org/ayudatech/how-to-stop-small-ddos-attacks-some-basic-security-advice/
0
 
LVL 1

Author Closing Comment

by:amigan_99
ID: 40629444
Just what we need. Thank you.
0

Featured Post

Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I. Introduction There's an interesting discussion going on now in an Experts Exchange Group — Attachments with no extension (http://www.experts-exchange.com/discussions/210281/Attachments-with-no-extension.html). This reminded me of questions tha…
Fine Tune your automatic Updates for Ubuntu / Debian
Learn how to find files with the shell using the find and locate commands. Use locate to find a needle in a haystack.: With locate, check if the file still exists.: Use find to get the actual location of the file.:
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.

920 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

16 Experts available now in Live!

Get 1:1 Help Now