Enhanced TCP SYN Attack Detection
نویسندگان
چکیده
In this paper, we analyze the stateless SYNSYN&ACK and SYN-FIN/RST detection mechanisms for TCP SYN attacks. We indicate the inherent vulnerability of the SYN-FIN/RST detection mechanism caused by the computation of the RST packet counts. We indicate why SYNSYN&ACK is a more efficient and reliable detection mechanism than SYN-FIN/RST. We come up with ‘Bot Buddies’ for TCP SYN attacks and explain how the use of them can compromise both mechanisms. We propose an enhanced detection mechanism incorporating the Bloom filter to handle these variations of TCP SYN attacks. We show that our enhanced mechanism overcomes the problems of the use of Bot Buddies and analyse its efficiency.
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