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C0nw0nk
Senior Member
Join Date: May 2011
Location: United Kingdom
Old 04-22-2013 , 14:00   Re: SRCDS Windows Firewall Security / Hardening
Reply With Quote #30

Quote:
Originally Posted by Mike_BoG View Post
I doubt anything in this thread will help against a real large scale DDoS. Sure, it might help against a couple of skids, but not anything more.

Anyhow, for Linux you can use DDoS-Deflate, a small script you install which runs in a cronjob every minute. Basically what it does is check the output of a command, the command will show a list over IP's with their connection count, if the connection count is over the set threshold it will block the IP using iptables or apf and will send you an email with the IP's it blocked.

As said, this will only help against small/medium sized DoS attacks, not a real DDoS. If the attack is larger than your connection it does not matter what you do on the server, if your pipe is flooded there isn't much you can do except a nullroute or if the GSP can block the offending IP's in their border routers (/other routers which exists in their network).

http://deflate.medialayer.com/
Well said, It should be obvious to everyone if most game servers have a 100mbps connection they could fend of an attack of the same speed but if from multiple IP's and probably about 1GBPS you would not stand a chance best of getting a decent router or joining a good data center.

Anyway the Anti-DDoS tools i posted will help allot if the attack is only small but utilizes the same connection speed.
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Last edited by C0nw0nk; 04-22-2013 at 14:03.
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