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PrefaceAcknowledgmentsPart 1 Introducing TCP/IP and the Need for Security£ºFirewallsChapter lInternetworking Protocols and Standards£ºAn OverviewInternet Protocol £¨IP£©How IP Addressing WorksIP Security RisksUser Datagram Protocol £¨UDP£©Attacking UDP Services£º SATAN at EaseISS for UNIX and Windows NTTransmission Control Protocol £¨TCP£©IP AddressesExtending IP Addresses Through CIDRTCP/IP Security Risks and CountermeasuresIPSEC-An IETF IP Security CountermeasureIPSO-A DOD IP Security CountermeasureRouting Information Protocol £¨RIP£©MBONE - The Multicast BackboneInternet Control Message Protoco£¨ £¨ICMP£©Internet Group Management Protocol £¨IGMP£©Open Shortest-Path First £¨OSPF£©Border Gateway Protocol Version 4 £¨BGP4£©Address Resolution ProtocolReverse Address Resolution Protocol £¨RARP£©Security Risks of Passing IP Datagrams ThroughRoutersSimple Network Management Protocol £¨SNMP£©Watch Your ISP ConnectionThe Internet Protocol Next Generation or IPv6Address ExpansionAutomatic Configuration of Network DevicesSecurityReal-Time Perf ormanceMulticastingIPv6 SecurityNetwork Time Protocol £¨NTP£©Dynamic Host Conguration Protocol £¨DHCP£©Windows SocketsDomain Name System £¨DNS£©Limiting DNS InformationFirewalls ConceptsThe Flaws in FirewallsFun with DMZsAuthentication lssuesTrust at the PerimeterIntranetsChapter 2Basic ConnectivityWhat Happened to TTYWhat Is the Baudot Code? UNIX to UNIX CoPy £¨UUCP£©SLIP and PPPRloginVirtual Terminal Protocol £¨Telnet£© . Columbia University' Kermit£º A Secure and ReliableTelnet ServerTelnet Services Security ConsiderationsA Systems Manager Approach to Network SecurityTelnet Session Security ChecklistTrivial File Transfer Protocol £¨TFTP£©TFTP Security ConsiderationsFile Transfer Protocol £¨FTP£©Some of the Challenges of Using FirewallsIncreasing Security on lP NetworksChapter 3 Cryptography£º Is It Enough? IntroductionSymmetric Key Encryption £¨Private Keys£©Data Encryption Standard £¨DES£©International Data Encryption Afgorithm £¨IDEA£©CASTSkipjackRC2/RC4Asymmetric Key Encryption/Public Key EncryptionRSADigital Signature Standard £¨DSS£©Message Digest AlgorithmsMD2£¬ MD4, and MD5Secure Hash Standard/Secure Hash Algorithm£¨SHS/SHA£©CertificatesCertificate ServersKey ManagementKerberosKey-Exchange Algorithms £¨KEA¡­¡­ Part 2 Firewall Implementations and LimitationsPart 3 Firewall Resource GuideAppendix A List of Firewall Resellers and Related ToolsGlossaryBibliographyIndex