Solved

Preventing DOS attack on Ubuntu gaming server

Posted on 2015-02-24
3
285 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 62

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 29

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

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

The purpose of this article is to demonstrate how we can use conditional statements using Python.
It’s 2016. Password authentication should be dead — or at least close to dying. But, unfortunately, it has not traversed Quagga stage yet. Using password authentication is like laundering hotel guest linens with a washboard — it’s Passé.
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
Learn how to navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…

790 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