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Exploring Reverse Firewalling Methods for DoS Attack Prevention

Calendar Nov 07, 2001 • User Avatar Anthony Pell
1 min read
General Esm H446
Topics%20covered

Topics Covered

denial of service network security security techniques reverse firewall flood prevention
In a bid to fight the growing menace from computer and router-based denial of service (DoS) attacks, security firm have developed a technique to dam the DoS data flood at source. Using funding from the Defence Advanced Research Projects Agency . . . In a bid to fight the growing menace from computer and router-based denial of service (DoS) attacks, security firm have developed a technique to dam the DoS data flood at source. Using funding from the Defence Advanced Research Projects Agency (DARPA), security technology firm Cs3 is looking a the concept of reverse firewalling, or keeping the flood of data from a DoS attack dammed up at the source.

The Reverse Firewall works by filtering the outgoing packets from a network. The difference between a legitimate application that uses high bandwidth and a packet flooding attack is that, in the former case, the machine at the other end of the conversation is participating in a two-way conversation. In the case of a DoS attack, the exchange is one sided.

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