Comments on: DIY Linux DoS HACK – HOWTO Limit your the max number of TCP connections to your Web Server! http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/ Zedomax - The DIY, HOWTO, Mod, Hacks, Gadgets, and Tech Blog! Tue, 24 Nov 2009 22:11:10 -0600 http://wordpress.org/?v=2.8.6 hourly 1 By: lalit http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/comment-page-1/#comment-386240 lalit Tue, 05 Aug 2008 09:51:56 +0000 http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/#comment-386240 plz help to increase my internet speed i have reliance wireless broadband during night time the speed is 40kbps(downloading) but during day after 10 am it is 4to5kbps how can i incrasemy speed without the permission of my network administrator also tell me how to hack my network pc without there permissions plz help to increase my internet speed i have reliance wireless broadband
during night time the speed is 40kbps(downloading) but during day after 10 am it is 4to5kbps
how can i incrasemy speed without the permission of my network administrator
also tell me how to hack my network pc without there permissions

]]> By: GH3 Cheats http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/comment-page-1/#comment-382373 GH3 Cheats Sat, 26 Apr 2008 19:29:43 +0000 http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/#comment-382373 That is some crazy stuf and could be useful. I have yet to need such information though. knock on wood. That is some crazy stuf and could be useful. I have yet to need such information though. knock on wood.

]]> By: max http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/comment-page-1/#comment-381853 max Thu, 13 Mar 2008 01:36:12 +0000 http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/#comment-381853 I think when you reboot your server, this setting gets resetted. You can put it in a file somewhere so it starts when your server reboots, I forgot how to do this... I think when you reboot your server, this setting gets resetted. You can put it in a file somewhere so it starts when your server reboots, I forgot how to do this…

]]> By: Predrag Stojadinovic http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/comment-page-1/#comment-381844 Predrag Stojadinovic Wed, 12 Mar 2008 15:24:36 +0000 http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/#comment-381844 That would be awesome! Is there a way to check it or undo it? (just to know) THANKS! That would be awesome!

Is there a way to check it or undo it? (just to know)

THANKS!

]]> By: max http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/comment-page-1/#comment-381843 max Wed, 12 Mar 2008 15:02:40 +0000 http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/#comment-381843 Oh you know what, I think it's already working then, it means you already set it. Oh you know what, I think it’s already working then, it means you already set it.

]]> By: Predrag Stojadinovic http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/comment-page-1/#comment-381841 Predrag Stojadinovic Tue, 11 Mar 2008 16:48:02 +0000 http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/#comment-381841 I did the first one before the problematic one ofcourse. However, not Im getting: srv098:~$ iptables -t nat -N syn-flood iptables: Chain already exists No matter what I do Im either getting: iptables: Invalid argument or iptables: Chain already exists :((( I did the first one before the problematic one ofcourse. However, not Im getting:
srv098:~$ iptables -t nat -N syn-flood
iptables: Chain already exists

No matter what I do Im either getting:
iptables: Invalid argument
or
iptables: Chain already exists

:( ((

]]> By: max http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/comment-page-1/#comment-381840 max Tue, 11 Mar 2008 16:12:21 +0000 http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/#comment-381840 Hey there, Try entering the first line first: iptables -t nat -N syn-flood You have enter all the lines one at a time and it will work~ Let me know if you need more help. :) Hey there,

Try entering the first line first:

iptables -t nat -N syn-flood

You have enter all the lines one at a time and it will work~

Let me know if you need more help. :)

]]> By: Predrag Stojadinovic http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/comment-page-1/#comment-381836 Predrag Stojadinovic Tue, 11 Mar 2008 08:32:39 +0000 http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/#comment-381836 THANKS for the fast reply. However, now I got: srv098:~$ iptables -t nat -A syn-flood -m limit --limit 12/s --limit-burst 24 -j RETURN iptables: Invalid argument THANKS for the fast reply. However, now I got:

srv098:~$ iptables -t nat -A syn-flood -m limit –limit 12/s –limit-burst 24 -j RETURN
iptables: Invalid argument

]]> By: max http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/comment-page-1/#comment-381834 max Tue, 11 Mar 2008 02:19:06 +0000 http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/#comment-381834 Try this instead, my blog post looks like it won't let you copy two dashes: iptables -t nat -A syn-flood -m limit --limit 12/s --limit-burst 24 -j RETURN and you can see the instructions better on our wiki: http://zedomax.com/wiki/index.php/Linux/Unix_HOWTOs#HOWTO_Limit_number_of_connections_to_your_server_to_fight_Denial_of_Service_attacks Try this instead, my blog post looks like it won’t let you copy two dashes:

iptables -t nat -A syn-flood -m limit –limit 12/s –limit-burst 24 -j RETURN

and you can see the instructions better on our wiki:

http://zedomax.com/wiki/index.php/Linux/Unix_HOWTOs#HOWTO_Limit_number_of_connections_to_your_server_to_fight_Denial_of_Service_attacks

]]> By: Predrag Stojadinovic http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/comment-page-1/#comment-381830 Predrag Stojadinovic Mon, 10 Mar 2008 20:43:25 +0000 http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/#comment-381830 Hi, any idea why Im getting this error message when I try your approach: srv098:~$ iptables -t nat -A syn-flood -m limit -limit 12/s -limit-burst 24 -j RETURN iptables v1.3.6: Unknown arg `limit' Try `iptables -h' or 'iptables --help' for more information. THANKS in advance !!! Hi, any idea why Im getting this error message when I try your approach:

srv098:~$ iptables -t nat -A syn-flood -m limit -limit 12/s -limit-burst 24 -j RETURN
iptables v1.3.6: Unknown arg `limit’
Try `iptables -h’ or ‘iptables –help’ for more information.

THANKS in advance !!!

]]> By: max http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/comment-page-1/#comment-378016 max Tue, 04 Dec 2007 08:54:58 +0000 http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/#comment-378016 yes, i can't wipe them out completely but i can limit their strategies to bring sites down... :p yes, i can’t wipe them out completely but i can limit their strategies to bring sites down… :p

]]> By: Studio Equipment http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/comment-page-1/#comment-378014 Studio Equipment Tue, 04 Dec 2007 08:50:49 +0000 http://zedomax.com/blog/2007/12/03/diy-linux-dos-hack-howto-limit-your-the-max-number-of-tcp-connections-to-your-web-server/#comment-378014 Wow! What an attitude! I would love to shake hands with you. Fix the cockroaches. Guys like me depend on fellows like you to do such things. All the best. I hope that you wipe them out completely! Wow! What an attitude! I would love to shake hands with you. Fix the cockroaches. Guys like me depend on fellows like you to do such things. All the best. I hope that you wipe them out completely!

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