Comments on: How to Prevent Denial of Service Attacks http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks Where 127.0.0.1 is Home. Wed, 10 Mar 2010 16:28:43 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Ibrahim Hudhaif http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks/comment-page-1#comment-10465 Ibrahim Hudhaif Sun, 15 Nov 2009 12:51:47 +0000 http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks#comment-10465 First of, I don't think buying IDS would effectively help avoiding DDoS. IDS is only after facts device and do not help to overcome such an issue. IPS could be much better than IDS but still if you don't have a good relationship with your ISPs by retaining an emergency contacts of the technical staff and proper procedure of what to do if that happen! Because it would a panic time... so some written documents should guide on what do! First of, I don’t think buying IDS would effectively help avoiding DDoS. IDS is only after facts device and do not help to overcome such an issue.

IPS could be much better than IDS but still if you don’t have a good relationship with your ISPs by retaining an emergency contacts of the technical staff and proper procedure of what to do if that happen! Because it would a panic time… so some written documents should guide on what do!

]]> By: Ramil http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks/comment-page-1#comment-10043 Ramil Sun, 11 Oct 2009 10:59:26 +0000 http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks#comment-10043 I was told to help organize and prevent a DoS attack for a web-site for testing purposes. This was really helpful to start with. Great job! Tnx a lot. I was told to help organize and prevent a DoS attack for a web-site for testing purposes. This was really helpful to start with. Great job! Tnx a lot.

]]> By: Erin http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks/comment-page-1#comment-9578 Erin Fri, 11 Sep 2009 12:32:32 +0000 http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks#comment-9578 DDoS attacks are done using the ping flood method. No ip verify unicast reverse-path is only going to filter out the actual attacker but not all the zombies because they are coming from legit IP's. DDoS attack zombies sometimes are in specific geographic areas....so lets say some guys in Korea has it out for your company or website....and 90% of his zombies are in Korea....you can filter whole A or B blocks of IP's.....if it is truly distributed....things get really hairy really quickly. DDoS attacks are done using the ping flood method.
No ip verify unicast reverse-path is only going to filter out the actual attacker but not all the zombies because they are coming from legit IP’s.
DDoS attack zombies sometimes are in specific geographic areas….so lets say some guys in Korea has it out for your company or website….and 90% of his zombies are in Korea….you can filter whole A or B blocks of IP’s…..if it is truly distributed….things get really hairy really quickly.

]]> By: Eric http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks/comment-page-1#comment-8996 Eric Tue, 11 Aug 2009 03:20:37 +0000 http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks#comment-8996 Well written but I hope you're open to critizism. You talked about all the details of the DoS attacks until you reached the DDos. At that point you just explained what a zombie is which really says nothing about the actual attack of each individual zombie, it only describes that you are being attacked from multiple vectors. Are those vectors using tcp syn, smurf, pod, fraggle, teardrop or what? I would expand on DDos a little more. Maybe cit examples like Kraken or Srizbi and what specifc methods they use. Well written but I hope you’re open to critizism.

You talked about all the details of the DoS attacks until you reached the DDos. At that point you just explained what a zombie is which really says nothing about the actual attack of each individual zombie, it only describes that you are being attacked from multiple vectors. Are those vectors using tcp syn, smurf, pod, fraggle, teardrop or what? I would expand on DDos a little more. Maybe cit examples like Kraken or Srizbi and what specifc methods they use.

]]> By: varun naresh http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks/comment-page-1#comment-8938 varun naresh Fri, 07 Aug 2009 14:46:03 +0000 http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks#comment-8938 This article is so awsome XD ! Amazing really ! well done ! This article is so awsome XD !

Amazing really !

well done !

]]> By: Criminal Justice Collaboratory: CyberSecurity http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks/comment-page-1#comment-8539 Criminal Justice Collaboratory: CyberSecurity Thu, 16 Jul 2009 23:04:12 +0000 http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks#comment-8539 [...] http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks http://en.wikipedia.org/wiki/Denial-of-service_attack http://www.webopedia.com/TERM/D/DoS_attack.html [...] [...] http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks http://en.wikipedia.org/wiki/Denial-of-service_attack http://www.webopedia.com/TERM/D/DoS_attack.html [...]

]]> By: Ulan http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks/comment-page-1#comment-8259 Ulan Wed, 08 Jul 2009 11:02:04 +0000 http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks#comment-8259 Clear and simple explanation. Thanks! Clear and simple explanation.
Thanks!

]]> By: nkuba ngonga http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks/comment-page-1#comment-1499 nkuba ngonga Sat, 30 Aug 2008 17:41:14 +0000 http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks#comment-1499 its the best article i have seen so far.keep it up. it helped me understand network security baics its the best article i have seen so far.keep it up. it helped me understand network security baics

]]> By: shwe http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks/comment-page-1#comment-773 shwe Mon, 04 Aug 2008 23:50:46 +0000 http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks#comment-773 very helpful. very helpful.

]]> By: lookman http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks/comment-page-1#comment-475 lookman Wed, 02 Jul 2008 09:59:46 +0000 http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks#comment-475 Goodday, This articles are well okay. Goodday,
This articles are well okay.

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