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2.2 應用層閘道式防火牆 (Application-Level Gateway) � 作用在OSI 模式的最高層, Application-Level Gateway可以了解所有通過封包的資訊。 � 目的端的伺服器無法知道Clinet端主機的實際位址,使得內部的網路位址可不為外界所知,如此以達到防火牆的功用。 � 在功能上來說, Application-Level Gateway在各類型的防火牆技術之中算是最優良的。但它的價格較昂貴。 � 它不完全具有透通性,有些程式應用很可能會莫名其妙地被阻檔在門外。 16
2.3 電路層閘道式防火牆 (Circuit-Level Gateway) 17
Page 1 and 2: 安全性機制及工具主講人:
Page 3 and 4: 1.網路世界上的系統 3
Page 5 and 6: Auditing &Trapping Tools: Honeypot/
Page 7 and 8: 1. What Is an Internet Firewall?
Page 9 and 10: 2.1 封包過濾式防火牆 (Packe
Page 11 and 12: 封包過濾的優點封包過濾
Page 13 and 14: 2.2 應用層閘道式防火牆 (Ap
Page 15: 2.2 應用層閘道式防火牆 (Ap
Page 19 and 20: 2.3 電路層閘道式防火牆 (Ci
Page 21 and 22: 3. 著名防火牆介紹 � 3.1
Page 23 and 24: 設定規則 23
Page 26 and 27: 3.1.2 軟體防火牆 -ISA Server
Page 28 and 29: 3.1.3 軟體防火牆 - Checkpoint
Page 30 and 31: 3.2.1 硬體防火牆 - NetScreen
Page 32 and 33: 3.2.3 硬體防火牆 - Nokia IP40
Page 34 and 35: 小結 � 軟體防火牆的主要
Page 36 and 37: 4.1雙介面主機 - Dual-Homed Hos
Page 38 and 39: Using a screening router to do pack
Page 40 and 41: 屏障式閘道器 (Screened Host G
Page 42 and 43: 4.4 屏障式子網防火牆 �
Page 44 and 45: 4.5 雙屏障式子網防火牆 �
Page 46 and 47: Netfilter Architecture - A Packet T
Page 48 and 49: 5.2 封包過濾原理 48
Page 50 and 51: 5.3.2 Command 命令 � 表示要
Page 52 and 53: 5.3.4 Target 目標 � 若少了
Page 54 and 55: 6.1 White Box Test � 以設計為
Page 56 and 57: 6.3 實務測試: � TEST 1:防火
Page 58 and 59: 6.3 實務測試: � TEST 3:使用
Page 60 and 61: 實務測試:[作業] 60
Page 62 and 63: 實務測試:[作業] 作業3:解
Page 64 and 65: Enhanced Security Tools: IDS � Wh
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Host Intrusion detection system (HI
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Intrusion Detection System: History
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Six main components � Subjects: I
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Intrusion Detection Working Group (
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IDWG Documents 74
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The Intrusion Detection Exchange Pr
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Data source(1): WINDOWS/Event Log 7
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Data source(3): Windows registry 80
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Anomaly detection � statistical m
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IDS Product � AXENT (acquired by
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•1998 DARPA Intrusion Detection E
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� 89
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1998 Anomaly Training Data The simu
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aesop 192.168.1.20 Web Server Linux
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研伸閱讀與進階研究:IDS/IDP
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NIDS Mode運作流程 99
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IDS測試 � TEST 1: SNORT安裝
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Enhanced Security Tools: VPN � Wh
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何謂VPN(Virtual Private Networks)
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VPN 應用: 通過Internet達到遠
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通過區域網路與伺服器達
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VPN 技術:通道技術 � CPE (Cu
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點到點通道協議 -PPTP(Point-t
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第二層通道協議 -L2TP(Layer T
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IPSec協議 � 在Layer 3網路層
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Tunnel Mode 119
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四種通道技術在OSI七層模
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VPN 產品介紹 � 硬體式的VP
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產品說明 � Cisco VPN 3000 Con
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VPN基本要求 � 用戶驗證 VP
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實驗目的 � 正常連線至企
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實務測試: � TEST 1: 路由對
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Enterprise Security Testing :Vulner
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弱點掃描分類 � 主動掃描
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Retina security scanner 137
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OSSTMM 167
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What about “Forensics”? � “
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Digital Forensic Science � The us
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Computer Forensics Tool Testing (CF
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Digital Crime Scene Investigation
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Is it Necessary? � An investigati
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Existing Research (2) � Extractio
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Event Construction Event Sequencing
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作業 � digital forensic analysi
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安全性機制及工具 - 資通安全研發中心

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