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Go Back   LiteSpeed Support Forums > LiteSpeed Web Server > General > I'm behind SYN FLOOD with Spoofed IP'S

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  #1  
Old 06-05-2012, 11:31 AM
midulc midulc is offline
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Join Date: Jun 2012
Posts: 15
Default I'm behind SYN FLOOD with Spoofed IP'S

I have LiteSpeed + CSF + ALL RPS checks done + CentOS 6.2 fully updated + WHM...
What to do?
Thanks.
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  #2  
Old 06-05-2012, 12:06 PM
webizen webizen is offline
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Join Date: Oct 2010
Posts: 2,338
not LSWS related but we help you anyway as you ask for help here.

enable syncookies
Quote:
sysctl -w net.ipv4.tcp_syncookies=1
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  #3  
Old 06-05-2012, 01:36 PM
midulc midulc is offline
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Join Date: Jun 2012
Posts: 15
Default I know

Yes, I knew it was not LSWS related but you know all!
I have already enabled syn cookies and it's the same... I can't get why is this happenning... Its a 200 mbps ddos, anyway i have a 10 gbps server but all the same all the cpu is laggy!!
Any other suggestions?

PS: Are you helping to fully configure a server with LSWS if I pay you?
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  #4  
Old 06-05-2012, 07:10 PM
NiteWave NiteWave is offline
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Join Date: Sep 2009
Posts: 2,226
maybe you can order "Advanced Anti-DDoS Setup"
https://store.litespeedtech.com/store/cart.php?gid=5

we have some experience on anti-ddos and have succeeded on a lot user cases. but not 100% sure if it apply for your case as well.
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  #5  
Old 06-06-2012, 09:51 AM
midulc midulc is offline
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Default Ok, what do you configure?

Suppose I Adquire that configuration pack, what will you configure for me?
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  #6  
Old 06-06-2012, 11:23 AM
webizen webizen is offline
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Join Date: Oct 2010
Posts: 2,338
We will let you know once you order the service.
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  #7  
Old 06-06-2012, 11:37 AM
midulc midulc is offline
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Join Date: Jun 2012
Posts: 15
Default I need security...

I need to be sure if it will work or not, as it's not just a little money.
Thanks.
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  #8  
Old 06-06-2012, 11:55 AM
webizen webizen is offline
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Join Date: Oct 2010
Posts: 2,338
If not, we will refund the money to you.

Last edited by webizen; 06-06-2012 at 12:03 PM..
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  #9  
Old 06-06-2012, 12:23 PM
midulc midulc is offline
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Join Date: Jun 2012
Posts: 15
Default Just a question

"Set up script to block attacking IP automatically via iptables based on web server detection result. "

Actually the requests NEVER get into the server, there are like 3000 ip's differents all with state SYN_RECEIVED getting a 200MBPS attack.
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  #10  
Old 06-06-2012, 02:13 PM
webizen webizen is offline
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Join Date: Oct 2010
Posts: 2,338
http://www.litespeedtech.com/support...ead.php?t=5771
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