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DDOS Attack

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DDOS Attack - 7.Nov.2002 6:03:00 PM   
shooter

 

Posts: 10
Joined: 1.Nov.2002
Status: offline
Hi,

I have a problem with a havy DDOS attack to our servers, all what I know is that the most attacks come from the IP's 12.0.0.0 and 24.0.0.0 and I have blokked this range, but our line is still blokked, is there somone that have a tool or a url or somthing where I can find help for this. ??

thanks. "[Confused]"
Post #: 1
RE: DDOS Attack - 8.Nov.2002 12:10:00 AM   
tshinder

 

Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Hi Shooter,

The only way to handle this problem is to work with your ISP so that they can block the network at their end.

HTH<
Tom

(in reply to shooter)
Post #: 2
RE: DDOS Attack - 10.Nov.2002 3:44:00 PM   
shooter

 

Posts: 10
Joined: 1.Nov.2002
Status: offline
Hi,

Yes It is correct, but I know that there are severel other possibilitys now, to get rid of this bastards.

I have talked with our ISP and the security apartment, they have alot of suggestions and I have found the solution now 0)

(in reply to shooter)
Post #: 3
RE: DDOS Attack - 11.Nov.2002 2:29:00 AM   
LGR

 

Posts: 18
Joined: 16.Apr.2002
Status: offline
Hi shooter and Tshinder:

This week we experinced a DDOS attack to my ISA server, at least that's what I think. Suddenly we can't surf the internet. When I stop the firewall service we could surf through the proxy service. I check the event viewer and I saw a machine doing an intensive all port scan to my server. We made a to way filter two block the machine and it works. How could avoid those all port scan from machines on Internet? We have a router with access list blocking all unnecesary traffic from Internet but of course we permit smtp. Could the machines doing All port scan to may ISA use SMTP protocol to do that? Please any suggestion or information will be appreciated

(in reply to shooter)
Post #: 4
RE: DDOS Attack - 11.Nov.2002 7:17:00 PM   
tshinder

 

Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Hi LGR,

There may be a tool to automate the blocking of those addresses that are attacking you at http://isatools.org. Check it out!

HTH,
Tom

(in reply to shooter)
Post #: 5
RE: DDOS Attack - 11.Nov.2002 9:32:00 PM   
LGR

 

Posts: 18
Joined: 16.Apr.2002
Status: offline
Hi Tshinder:

I found a script called BlockAttackeR.vbs. There is no any documentation about it but I supposed I should configure the Intrution Detected Alert to run this program. Am I right? Thanks a lot

Liber

(in reply to shooter)
Post #: 6
RE: DDOS Attack - 12.Nov.2002 12:14:00 PM   
shooter

 

Posts: 10
Joined: 1.Nov.2002
Status: offline
Hi,

The only problem with the BlockAttackeR.vbs file is that if it has bloked 1 IP then it came up with a message "cant add. this filter, because of a name violation" or somthing like this, I think that this is because it use the same description everyy time.

Any others that have found a solution for this problem ?, because the blokking function in this script is good.

(in reply to shooter)
Post #: 7
RE: DDOS Attack - 16.Mar.2009 1:13:57 PM   
JameKnott

 

Posts: 1
Joined: 16.Mar.2009
Status: offline
For protection from ddos attacks and ddos protected hosting i recommend GigabitDC. They even offer free migration.

(in reply to shooter)
Post #: 8

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