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[Chapter 1] 1.3 History of UNIX increases its attractiveness as a common platform base in business and academia alike. UNIX vendors and users are the leaders of the "open systems" movement: without UNIX, the very concept of "open systems" would probably not exist. No longer do computer purchases lock a customer into a multi-decade relationship with a single vendor. 1.2 What Is an Operating System? 1.4 Security and UNIX [ Library Home | DNS & BIND | TCP/IP | sendmail | sendmail Reference | Firewalls | Practical Security ] file:///C|/Oreilly Unix etc/O'Reilly Reference Library/networking/puis/ch01_03.htm (7 of 7) [2002-04-12 10:44:51]
[Chapter 2] 2.2 Risk Assessment 2.2 Risk Assessment Chapter 2 Policies and Guidelines The first step to improving the security of your system is to answer these basic questions: ● ● ● What am I trying to protect? What do I need to protect against? How much time, effort, and money am I willing to expend to obtain adequate protection? These questions form the basis of the process known as risk assessment. Risk assessment is a very important part of the computer security process. You cannot protect yourself if you do not know what you are protecting yourself against! After you know your risks, you can then plan the policies and techniques that you need to implement to reduce those risks. For example, if there is a risk of a power failure and if availability of your equipment is important to you, you can reduce this risk by purchasing an uninterruptable power supply (UPS). 2.2.1 A Simple Assessment Strategy We'll present a simplistic form of risk assessment to give you a starting point. This example may be more complex than you really need for a home computer system or very small company. The example is also undoubtedly insufficient for a large company, a government agency, or a major university. In cases such as those, you need to consider specialized software to do assessments, and the possibility of hiring an outside consulting firm with expertise in risk assessment. The three key steps in doing a risk assessment are: 1. 2. 3. Identifying assets Identifying threats Calculating risks There are many ways to go about this process. One method with which we have had great success is a series of in-house workshops. Invite a cross-section of users, managers, and executives from throughout your organization. Over a series of weeks, compose your lists of assets and threats. Not only will this process help to build a more complete set of lists, it will also help to increase awareness of security in everyone who attends. file:///C|/Oreilly Unix etc/O'Reilly Reference Library/networking/puis/ch02_02.htm (1 of 4) [2002-04-12 10:44:51]
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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 16] TCP/IP Networks organi
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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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[Chapter 7] Backups example, you ca
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[Chapter 24] 24.3 The Log Files: Di
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[Chapter 18] 18.5 Risks of Web Brow
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[Chapter 18] 18.5 Risks of Web Brow
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[Chapter 22] 22.4 SOCKS Figure 22.1
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22.4.5 SOCKS Identification Policy
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[Chapter 22] 22.4 SOCKS Obviously,
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[Chapter 22] 22.4 SOCKS [ Library H
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[Chapter 20] 20.3 Client-Side NFS S
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[Appendix F] F.2 U. S. Government O
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[Chapter 17] 17.5 Monitoring Your N
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[Chapter 19] RPC, NIS, NIS+, and Ke
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[Chapter 19] RPC, NIS, NIS+, and Ke
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[Chapter 11] 11.4 Entry environment
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[Chapter 3] 3.5 Verifying Your New
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[Chapter 3] 3.5 Verifying Your New
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[Chapter 21] 21.2 Building Your Own
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[Chapter 21] 21.2 Building Your Own
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[Appendix D] D.2 Security Periodica
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[Appendix D] D.2 Security Periodica
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[Chapter 14] 14.2 Serial Interfaces
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[Appendix C] C.3 Signals C.3 Signal
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[Appendix C] C.3 Signals overflows)
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[Chapter 27] 27.4 What All This Mea
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[Appendix E] E.2 Usenet Groups E.2
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[Chapter 15] 15.9 Summary 15.9 Summ
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[Preface] Scope of This Book into y
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[Preface] Scope of This Book Append
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[Preface] Conventions Used in This
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[Preface] Acknowledgments Acknowled
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[Preface] Acknowledgments [ Library
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[Preface] A Note to Computer Cracke
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[Part II] User Responsibilities Par
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[Part III] System Security Part III
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[Chapter 20] 20.5 Some Last Comment
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[Chapter 20] 20.5 Some Last Comment
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[Chapter 22] Wrappers and Proxies C
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[Chapter 21] 21.3 Example: Cisco Sy
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destination Specifies the address o
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[Chapter 21] 21.3 Example: Cisco Sy
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[Chapter 21] 21.6 Final Comments
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[Chapter 22] 22.2 sendmail (smap/sm
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Page 1009 and 1010:
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[Chapter 22] 22.3 tcpwrapper ● Tr
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[Chapter 22] 22.3 tcpwrapper 6. 7.
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[Chapter 22] 22.3 tcpwrapper # # /e
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} [Chapter 22] 22.3 tcpwrapper sed
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[Chapter 22] 22.6 Writing Your Own
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[Chapter 22] 22.6 Writing Your Own
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[Part VI] Handling Security Inciden
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[Appendix B] Important Files B. Imp
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[Appendix B] Important Files /etc/d
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[Appendix B] Important Files chgrp
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[Appendix B] Important Files rc? Bo
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