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Pushback against DDOS Attacks

Posted by CmdrTaco on from the build-a-better-asshole-trap dept.

Huusker writes "Steven Bellovin and others at ATT Research Labs and ICIR have come up with mechanism to stop DDOS attacks. The idea is called Pushback. When the routers get flooded they consult a Unix daemon (/etc/pushbackd) to determine if they are being DDOS'ed. The routers propagate the quench packets back to the sources. The policy and propagation are separate, allowing hardware vendors to concentrate on the quench protocol while the white hats invent ever more clever DDOS detection filters for /etc/pushbackd. The authors of the paper have an initial implementation on FreeBSD."

2 of 159 comments (clear)

  1. Re:Manual RegEx? by mocktor · · Score: 3, Funny

    Nice idea but regex's have waaaay to high an overhead to filter the amount of traffic even a small DDoS produces - you'd need some kind of omnipotent distributed uberBeowulf cluster (or a million monkeys watching a zillion blinkenlights)

  2. finally... a cure for Slashdotting... by constantnormal · · Score: 5, Funny

    in a press release by the Office of Homeland Defense, it was announced that an insidious plot by hacker terrorists had been thwarted. It seems that this subversive web site, www.slashdot.org, would trigger random DDOS attacks on targets identified on their web site. It has yet to be ascertained what their intent was, as no logical pattern has been detected. The investigation continues.

    Welcome to the Twilight Zone.
    I certainly hope the filters used to detect true DDOS attacks are effective enough to prevent this scenario.