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[Chapter 18] 18.7 Summary 18.7 Summary Chapter 18 WWW Security One of the principal goals of good security management is to prevent the disclosure of privileged information. Running a WWW service implies providing information, quickly and in volume. These two ideas pose a serious conflict, especially given how recently these services and software have appeared and how rapidly they are evolving. We have no way of anticipating all the failure modes and problems these services may bring. We strongly recommend that you consider running an WWW service on a stripped-down machine that has been especially designated for that purpose. Put the machine outside your firewall, and let the world have access to it ... and only to it. 18.6 Dependence on Third Parties 19. RPC, NIS, NIS+, and Kerberos [ Library Home | DNS & BIND | TCP/IP | sendmail | sendmail Reference | Firewalls | Practical Security ] file:///C|/Oreilly Unix etc/O'Reilly Reference Library/networking/puis/ch18_07.htm [2002-04-12 10:45:50]
[Chapter 14] 14.2 Serial Interfaces 14.2 Serial Interfaces Chapter 14 Telephone Security Information inside most computers moves in packets of 8, 16, or 32 bits at a time, using 8, 16, or 32 individual wires. When information leaves a computer, however, it is often divided into a series of single bits that are transmitted sequentially. Often, these bits are grouped into 8-bit bytes for purposes of error checking or special encoding. Serial interfaces transmit information as a series of pulses over a single wire. A special pulse called the start bit signifies the start of each character. The data is then sent down the wire, one bit at a time, after which another special pulse called the stop bit is sent (see Figure 7.1). Figure 14.1: A serial interface sending the letter K (ASCII 75) Because a serial interface can be set up with only three wires (transmit data, receive data, and ground), it's often used with terminals. With additional wires, serial interfaces can be used to control modems, allowing computers to make and receive telephone calls. file:///C|/Oreilly Unix etc/O'Reilly Reference Library/networking/puis/ch14_02.htm (1 of 2) [2002-04-12 10:45:50]
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Index Search | Symbols | A | B | C
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Index 8.8.3.1. Joetest: a simple pa
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[Chapter 12] 12.3 Protecting Data 1
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[Chapter 16] TCP/IP Networks connec
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[Chapter 7] Backups Making backups
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[Chapter 7] Backups circumstances.[
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[Chapter 7] Backups ● An incremen
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[Chapter 7] Backups or other proble
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[Preface] Which UNIX System? Which
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Page 919 and 920: [Chapter 23] 23.9 A Good Random See
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Page 923 and 924: [Chapter 17] 17.6 Network Scanning
Page 925 and 926: [Chapter 24] 24.3 The Log Files: Di
Page 927 and 928: [Chapter 18] 18.5 Risks of Web Brow
Page 929 and 930: [Chapter 18] 18.5 Risks of Web Brow
Page 931 and 932: [Chapter 22] 22.4 SOCKS Figure 22.1
Page 933 and 934: 22.4.5 SOCKS Identification Policy
Page 935 and 936: [Chapter 22] 22.4 SOCKS Obviously,
Page 937 and 938: [Chapter 22] 22.4 SOCKS [ Library H
Page 939 and 940: [Chapter 20] 20.3 Client-Side NFS S
Page 941 and 942: [Appendix F] F.2 U. S. Government O
Page 943 and 944: [Chapter 17] 17.5 Monitoring Your N
Page 945 and 946: [Chapter 19] RPC, NIS, NIS+, and Ke
Page 947 and 948: [Chapter 19] RPC, NIS, NIS+, and Ke
Page 949 and 950: [Chapter 11] 11.4 Entry environment
Page 951 and 952: [Chapter 3] 3.5 Verifying Your New
Page 953 and 954: [Chapter 3] 3.5 Verifying Your New
Page 955 and 956: [Chapter 21] 21.2 Building Your Own
Page 957 and 958: [Chapter 21] 21.2 Building Your Own
Page 959 and 960: [Appendix D] D.2 Security Periodica
Page 961: [Appendix D] D.2 Security Periodica
Page 965 and 966: [Appendix C] C.3 Signals C.3 Signal
Page 967 and 968: [Appendix C] C.3 Signals overflows)
Page 969 and 970: [Chapter 27] 27.4 What All This Mea
Page 971 and 972: [Appendix E] E.2 Usenet Groups E.2
Page 973 and 974: [Chapter 15] 15.9 Summary 15.9 Summ
Page 975 and 976: [Preface] Scope of This Book into y
Page 977 and 978: [Preface] Scope of This Book Append
Page 979 and 980: [Preface] Conventions Used in This
Page 981 and 982: [Preface] Acknowledgments Acknowled
Page 983 and 984: [Preface] Acknowledgments [ Library
Page 985 and 986: [Preface] A Note to Computer Cracke
Page 987 and 988: [Part II] User Responsibilities Par
Page 989 and 990: [Part III] System Security Part III
Page 991 and 992: [Chapter 20] 20.5 Some Last Comment
Page 993 and 994: [Chapter 20] 20.5 Some Last Comment
Page 995 and 996: [Chapter 22] Wrappers and Proxies C
Page 997 and 998: [Chapter 21] 21.3 Example: Cisco Sy
Page 999 and 1000: destination Specifies the address o
Page 1001 and 1002: [Chapter 21] 21.3 Example: Cisco Sy
Page 1003 and 1004: [Chapter 21] 21.6 Final Comments
Page 1005 and 1006: [Chapter 22] 22.2 sendmail (smap/sm
Page 1011 and 1012: [Chapter 22] 22.3 tcpwrapper ● Tr
Page 1013 and 1014:
[Chapter 22] 22.3 tcpwrapper 6. 7.
Page 1015 and 1016:
[Chapter 22] 22.3 tcpwrapper # # /e
Page 1017 and 1018:
} [Chapter 22] 22.3 tcpwrapper sed
Page 1019 and 1020:
[Chapter 22] 22.6 Writing Your Own
Page 1021 and 1022:
[Chapter 22] 22.6 Writing Your Own
Page 1023 and 1024:
[Part VI] Handling Security Inciden
Page 1025 and 1026:
[Appendix B] Important Files B. Imp
Page 1027 and 1028:
[Appendix B] Important Files /etc/d
Page 1029 and 1030:
[Appendix B] Important Files chgrp
Page 1031 and 1032:
[Appendix B] Important Files rc? Bo
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