Andrés, Steven creator Kenyon, Brian text xxu Rockland, MA Syngress ©2004 monographic eng

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xxx, 512 p. : : ill. ; 24 cm. Defining Perimeter and Internal Segments -- Internal versus External Segments -- Explaining the External Segment or Perimeter Segment -- The Internal Segment Explained -- Footprinting: Finding the IP Addresses Assigned to Your Company -- Using whois to Understand Who You Are -- Using DNS Interrogation for More Information -- Assessing Your Current Networks -- Monitoring Traffic -- Sniffing -- Counting the Counters -- Looking at Logical Layouts -- Get on the Bus -- Network Mapping 1-2-3 -- Performing Security Audits -- Vulnerability Assessment -- Remediation -- Follow-Up -- Examining the Physical Security -- Who's Knocking on Your NOC? -- Extra Ports Equal Extra Headaches -- Selecting the Correct Firewall -- Understanding Firewall Basics -- Seal of Approval -- Security Rules -- Hardware or Software -- Administrative Interfaces -- Traffic Interfaces -- Logging -- Optional Features -- Exploring Stateful Packet Firewalls -- What Is a Stateless Firewall? -- Keeping Track of Conversations -- Too Much Chatter -- Stateful Failover -- Explaining Proxy-Based Firewalls -- Gophers -- Modernization: The Evolution of Gophers -- Explaining Packet Layers: An Analogy -- Employee Monitoring -- Examining Various Firewall Vendors -- 3Com Corporation and Sonic Wall, Inc. -- Check Point Software Technologies -- Cisco Systems, Inc. -- CyberGuard -- Microsoft ISA Server -- NetScreen -- Novell -- Secure Computing -- Stonesoft, Inc. -- Symantec Corporation -- WatchGuard Technologies, Inc. -- Firewall Manipulation: Attacks and Defenses. Steven Andrés; Brian Kenyon Includes index. Computer networks Security measures TK5105.59 1931836019 9781931836012 140311 20140311153916.0