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    ABSTRACT Practical Defenses Against BGP Prefix Hijacking

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    Prefix hijacking, a misbehavior in which a misconfigured or malicious BGP router originates an IP prefix that the router does not own, is becoming an increasingly serious security problem on the Internet. In this paper, we conduct a first comprehensive study on incrementally deployable mitigation solutions against prefix hijacking. We first propose a novel reactive detection-assisted solution based on the idea of bogus route purging and valid route promotion. Our simulations based on realistic settings show that purging bogus routes at 20 highest-degree ASes reduces the polluted portion of the Internet by a random prefix hijack from 50% down to 24%, and adding promotion further reduces the remaining pollution by 33 % ? 57%, We prove that our proposed route purging and promotion scheme preserve the convergence properties of BGP regardless of the number of promoters. We are the first to demonstrate that detection systems based on a limited number of BGP feeds are subject to detection evasion by hijackers. Motivated the need for proactive defenses to complement reactive mitigation response, we evaluate customer route filtering, a best common practice among large ISPs today, and show its limited effectiveness. We also show the added benefits of combining route purging-promotion with customer route filtering. 1.

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    Title : ABSTRACT Practical Defenses Against BGP Prefix Hijacking
    Abstract : Prefix hijacking, a misbehavior in which a misconfigured or malicious BGP router originates an IP prefix that the router does not own, is becoming an increasingly serious security problem on the Internet. In this paper, we conduct a first comprehensive study on incrementally deployable mitigation solutions against prefix hijacking. We first propose a novel reactive detection-assisted solution based on the idea of bogus route purging and valid route promotion. Our simulations based on realistic settings show that purging bogus routes at 20 highest-degree ASes reduces the polluted portion of the Internet by a random prefix hijack from 50% down to 24%, and adding promotion further reduces the remaining pollution by 33 % ? 57%, We prove that our proposed route purging and promotion scheme preserve the convergence properties of BGP regardless of the number of promoters. We are the first to demonstrate that detection systems based on a limited number of BGP feeds are subject to detection evasion by hijackers. Motivated the need for proactive defenses to complement reactive mitigation response, we evaluate customer route filtering, a best common practice among large ISPs today, and show its limited effectiveness. We also show the added benefits of combining route purging-promotion with customer route filtering. 1.
    Subject : unspecified
    Area : Computer Science
    Language : English
    Affiliations
    Url : http://www.ece.purdue.edu/~ychu/publications/conext07_hjk.pdf
    Doi : 10.1.1.121.1936

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