DDOS Attack

Unanswered Question
Jun 14th, 2010
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Hi


We are getting DDOS attack again, tcp intercept doesnt help anymore.


Setup


INTERNET-----------------Internet_router---------ASA_firewall----------------Layer3_SW-------------LAN


Internet_Router = 2800

ASA Firewall = 5520

Layer3_SW = 4500



Source are different IP so blocking with ip not possible.


Any experience input would be appreciated.



Thanks

ST

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John Blakley Tue, 06/15/2010 - 06:57
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I see this is a day late, but for future reference you can generally contact your ISP and they can block the excess traffic for you. I contacted my ISP for their "emergency support" phone numbers and they verified that they could stop the traffic. You may want to look into that.


HTH,

John

saquib.tandel Tue, 06/15/2010 - 09:06
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Hi


ISP block the traffic for the public ip but services are impacted.

Any suggested solution to overcome DDOS attack


Wondering how Banks , Stock Trading  Organization , Corporates like Microsoft / Cisco survive these DDOS Attack

Edison Ortiz Tue, 06/15/2010 - 09:39
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Wondering how Banks , Stock Trading  Organization , Corporates like Microsoft / Cisco survive these DDOS Attack


Usually all hands-on-deck and involve all vendors... You need to be on the phone with these people.. Public forums is not the right avenue to obtain this kind of help where a lot of confidential information needs to be discussed.


Regards


Edison

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