Comments
Description
Transcript
通信先ホスト数の変化に注目した 異常トラフィック自動検出手法の提案と
20070516 _2 2007 5 1031060322 16 0 IDS 1 P2P IDS IDS IDS 3 2 P2P 6 IDS IDS IDS IDS IDS IDS IDS P2P 1 N M N Holt-Winters N N P2P P2P N 3 3 Sasser P2P WinMX P2P e-Donkey 3 1 5 N=300 N=2400 Holt-Winters Holt-Winters 20 2400 1 P2P Holt-Winters 2 ( ) 2.2 (1) r z = 1 − ∑ K (i, µ ) (2) K (i, µ ) ≡ µ Τ u (i ) (3) 2 2 i =1 K 2.1 P2P {xt ∈ ℜ | t = 1,2, K} ℜw w [1] (2) “ 2 ” 3 µ