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Re: DDoS protection module suggestion

November 03, 2010 05:15PM
Hi,

Agreed, what Ive done in the past to get around that issue is to setup a span port on our edge so it takes a packet and mirrors it to another server, say nic1. You run a script on that server that does all the number crunching, based on what it sees, you can have your script modify routing on the edge router, inject iptables rules into your server or any gw devices above the server. You can then not only provide a layer3-4 protection (while taking away the immediate threat away) but now can allow the attack to go on for say 1-5 min, monitor the uri and log files and create a behavior for the traffic which then you can block dirty and allow good traffic back in.

having a feedback loop system allows you to get rid of any false positives. If say a good ip is somehow redirected to localhost:81 (where there is a valid link with captcha saying "if you are in fact a GOOD user, answer the question and click [go]". Then have that action inject a cookie into the session which then gets matched at the edge and passes down to the proper segment.

there are dozens of ways to mitigate the issue, just depends on how you want to go about it. Ive worked on designing advance ddos mitigation networks/software and server based appliances.

Having said this, i do think that nginx requires a native ddos mitigation module, it would save a lot of time and effort in the long run! =)
Subject Author Posted

DDoS protection module suggestion

malte November 02, 2010 10:19PM

Re: DDoS protection module suggestion

Weibin Yao November 02, 2010 10:58PM

Re: DDoS protection module suggestion

malte November 02, 2010 11:21PM

Re: DDoS protection module suggestion

unclepieman November 03, 2010 12:02AM

Re: DDoS protection module suggestion

malte November 03, 2010 05:00PM

Re: DDoS protection module suggestion

unclepieman November 03, 2010 05:15PM

Re: DDoS protection module suggestion

malte November 03, 2010 10:30PM

Re: DDoS protection module suggestion

Redd Vinylene November 04, 2010 04:52AM

Re: DDoS protection module suggestion

malte November 04, 2010 03:47PM

Re: DDoS protection module suggestion

Weibin Yao November 04, 2010 10:28PM

Re: DDoS protection module suggestion

unclepieman November 05, 2010 12:10AM

Re: DDoS protection module suggestion

Weibin Yao November 05, 2010 01:08AM

Re: DDoS protection module suggestion

malte November 05, 2010 01:58AM

Re: DDoS protection module suggestion

unclepieman November 05, 2010 03:34AM

Re: DDoS protection module suggestion

Weibin Yao November 05, 2010 05:56AM

Re: DDoS protection module suggestion

Eugaia November 05, 2010 06:44AM

Re: DDoS protection module suggestion

姚伟斌 November 05, 2010 08:52AM

Re: DDoS protection module suggestion

malte November 05, 2010 12:16PM

Re: DDoS protection module suggestion

姚伟斌 November 05, 2010 09:50PM

Re: DDoS protection module suggestion

malte November 05, 2010 12:11PM

Re: DDoS protection module suggestion

unclepieman November 05, 2010 01:08PM

Re: DDoS protection module suggestion

malte November 05, 2010 05:52PM

Re: DDoS protection module suggestion

malte November 05, 2010 05:53PM

Re: DDoS protection module suggestion

Weibin Yao November 05, 2010 05:42AM

Re: DDoS protection module suggestion

Rainer Duffner November 03, 2010 05:42PM

Re: DDoS protection module suggestion

malte November 03, 2010 10:22PM

Re: DDoS protection module suggestion

ken107 December 26, 2010 04:49AM

Re: DDoS protection module suggestion

Weibin Yao December 26, 2010 09:32PM

Re: DDoS protection module suggestion

Waleed G. March 25, 2012 01:04PM



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