IPSLeadsec-IPSV2.1;;SmartFilter/BypassHAHAIPSIPS©20012009()()()LegendLenovoleadsec()LenovoSecurityTechnologiesInc.681000868/FZhongdianInformationTowerNo.6ZhongguancunSouthStreetHaidianDistrictBeijing(TEL)010-82166999(FAX)010-82166998(CustomerHotline)400-810-7766(E-mail)infosec@lenovo.com(worm)(virus)2(bufferoverflowattack)IPSUSEWindowsUnixLinuxStackandHeapBufferoverflowFormatstringerrorMemoryaccesserrorMemorycorruptionAccesscontrolandDesignweaknessIPSLinuxApache243.1.2.31.2.3.4.(ProtocolAnomaly)RFCIPS2.IP/PortIP/(hostscanning)(networkscanning)(portscanning)IP/PortIP/Port3.IPS(baseline)IPS3.1.3IPSP2P3.1.3.1URLIPSURL52URL(InstantMessengerIM)IMzIMzIMIPSMSNQQYahooMessengerGoogleTalk10IM3.1.3.3P2PP2PzzzzIPSP2P1.P2PIPSP2PGnutellaFastTrackBitTorrentiMeshP2PP2PP2PP2PIPSP2P2.P2PIPSP2PP2P3.1.3.4IPSWebIPSQQ3.1.4IPS