The Security Standard

HOME | ABOUT US | SERVICES | ADVISORIES | RESOURCES | DEFACEMENT ARCHIVE | MEMBERS AREA | TRAINING | CONTACT US

TCP SYN DoS Attack prevention on Cisco - There is a potential denial of service attack at internet service providers (ISPs) that targets network devices.

TCP SYN attack: A sender transmits a volume of connections that cannot be completed. This causes the connection queues to fill up, thereby denying service to legitimate TCP users.

This paper contains a technical description of how the potential TCP SYN attack occurs and suggested methods for using Cisco IOS software to defend against it.

Lists:
http://www.cisco.com/warp/public/707/4.html

Advisories and Patches.

Lists:
http://www.cisco.com/warp/public/779/largeent/issues/security/

Technical Support and Updates.

Lists:
http://support.3com.com/index.htm