Distributed Denial Of Service (DDOS) is the intentional paralyzing of a computer network by flooding it with data sent simultaneously from many individual computers (so-called zombies) which are used to stage DDOS attacks
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Why is it difficult to catch “Anonymous” or “Lulzsec” (groups)?
I'm not security literate, and if I was, I probably wouldn't be asking this question. As a regular tech news follower, I'm really surprised by the outrage of Anonymous (hacker group), but as a ...
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What techniques do advanced firewalls use to protect againt DoS/DDoS?
It is hard to protect a server against Denial of Service attacks, DoS/DDoS. The two simple ways I can think of is to use a server with much resources (e.g. CPU and memory), and to build the server ...
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How can a Software application defend against DoS or DDoS?
Most of the solutions for DoS attacks are not at the application level. In case I am using a proxy server, what are the possible countermeasures for DoS at the application level?
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How do DoS/DDoS work?
In the last days one could frequently read about attacks from anonymous and LulzSec against different platforms like Sony or HBGary etc. Yesterday for example they DDoS'ed soca.gov.uk and jhw.gov.cn. ...
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Accessing a site (which is) under a DDoS
Lets say http://www.an-example-site.com is under DDoS attack. Alice, who does not have direct access to the hardware infrastructure, urgently wants some information which can be accessed through the ...
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Reject IP packets with an ICMP error, or just drop them?
Consider an internet-facing host (the outer firewall). What should be done with undesired traffic: just drop it, or send back an ICMP error such as port unreachable? (In Linux terms: iptables -P DROP ...
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How to simulate DDoS attacks from the Internet?
The idea behind security tests is easy. You want to know what a hacker can do - you hire a security expert who acts like a hacker to see how far he can get. You want to know what an evil admin can do ...
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How to test against DDoS in a controlled enviroment?
Can you suggest me methods or tools that can help in simulating a DDoS attack in a controlled enviroment (like my private lab)?
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Effects of DDoS attacks on memory use under Linux
Can someone whose Linux system is under DDoS attacks give me exact data on the effects of the Low Orbit Ion Cannon (LOIC), the High Orbit Ion Cannon (HOIC), Slowloris, PyLoris, Hping etc. on memory ...
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Looking for botnet IP address feeds to protect against DDoS
I would like to get a live feed of botnet IP addresses delivered from a service and block them under certain conditions. Preferably community based/open source but open to looking at worthy commercial ...
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4answers
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How does CAPTCHA mitigate DDoS attacks?
This seems like an easy question, but I've failed to find an answer.
One of the uses of CAPTCHA is to cope mitigate Denial of Service attacks. Suppose an adversary performs excessive login attempts, ...
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6answers
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how to mitigate a DDoS from botnet on your website that comes from random IPs
I am wondering how do you mitigate a ddos attack which is coming from a botnet and hitting random URLs on a website.
If there was a consistent URL it was hitting then it would be fairly simple, and ...
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DDoS Protection for DNS providers
Zerigo, our DNS provider has reported to have been under heavy DDOS attack in the last 24 hours or so. Considering the distributed nature of DNS, and their architecture consisting of 5 main DNS ...
