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Network Security: Private Communication in a Public World, 2nd Edition

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Network Security: Private Communication in a Public World, 2nd Edition

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About

Features

The classic guide to network security, now fully updated for the latest standards and technologies!

° Extensive new coverage, including PKI, IPSec, SSL, Web security, and AES.

° Definitive introduction to cryptography, authentication, and major standards.

° First edition was honored by Network Magazine as one of the Top 10 Most Useful networking books!

Description

  • Copyright 2002
  • Dimensions: K
  • Pages: 752
  • Edition: 2nd
  • Book
  • ISBN-10: 0-13-046019-2
  • ISBN-13: 978-0-13-046019-6
  • eBook (Adobe DRM)
  • ISBN-10: 0-13-715637-5
  • ISBN-13: 978-0-13-715637-5

The classic guide to network security—now fully updated!"Bob and Alice are back!"

Widely regarded as the most comprehensive yet comprehensible guide to network security, the first edition of Network Security received critical acclaim for its lucid and witty explanations of the inner workings of network security protocols. In the second edition, this most distinguished of author teams draws on hard-won experience to explain the latest developments in this field that has become so critical to our global network-dependent society.

Network Security, Second Edition brings together clear, insightful, and clever explanations of every key facet of information security, from the basics to advanced cryptography and authentication, secure Web and email services, and emerging security standards. Coverage includes:

  • All-new discussions of the Advanced Encryption Standard (AES), IPsec, SSL, and Web security
  • Cryptography: In-depth, exceptionally clear introductions to secret and public keys, hashes, message digests, and other crucial concepts
  • Authentication: Proving identity across networks, common attacks against authentication systems, authenticating people, and avoiding the pitfalls of authentication handshakes
  • Core Internet security standards: Kerberos 4/5, IPsec, SSL, PKIX, and X.509
  • Email security: Key elements of a secure email system-plus detailed coverage of PEM, S/MIME, and PGP
  • Web security: Security issues associated with URLs, HTTP, HTML, and cookies
  • Security implementations in diverse platforms, including Windows, NetWare, and Lotus Notes

The authors go far beyond documenting standards and technology: They contrast competing schemes, explain strengths and weaknesses, and identify the crucial errors most likely to compromise secure systems. Network Security will appeal to a wide range of professionals, from those who design or evaluate security systems to system administrators and programmers who want a better understanding of this important field. It can also be used as a textbook at the graduate or advanced undergraduate level.

Prentice Hall Series in Computer Networking and Distributed Systems

Sample Content

Online Sample Chapter

Communicating Securely in an Insecure Medium

Table of Contents



Acknowledgments.


1. Introduction.

Roadmap to the Book. What Type of Book Is This? Terminology. Notation. Primer on Networking. Active vs. Passive Attackc. Layers and Cryptography. Authorization. Tempest. Key Escrow for Law Enforcement. Key Escrow for Careless Users. Viruses, Worms, Trojan Horses. The Multi-level Model of Security. Legal Issues.

I. CRYPTOGRAPHY.

2. Introduction to Cryptography.

What Is Cryptography? Breaking an Encryption Scheme. Types of Cryptographic Functions. Secret Key Cryptography. Public Key Cryptography. Hash Algorithms. Homework. 3. Secret Key Cryptography.

Introduction. Generic Block Encryption. Data Encryption Standard (DES). International Data Encryption Algorithm (IDEA). Advanced Encryption Standard (AES). RC4. Homework. 4. Modes of Operation.

Introduction. Encrypting a Large Message. Generating MACs. Multiple Encryption DES. CBC Outside vs. Inside. Homework. 5. Hashes and Message Digests.

Introduction. Nifty Things to Do with a Hash. MD2. MD4. MD5. SHA-1. HMAC. Homework. 6. Public Key Algorithms.

Introduction. Modular Arithmetic. RSA. Diffie-Hellman. Digital Signature Standard (DSS). How Secure Are RSA and Diffie-Hellman? Elliptic Curve Cryptography (ECC). Zero Knowledge Proof Systems. Homework Problems. 7. Number Theory.

Introduction. Modular Arithmetic. Primes. Euclid's Algorithm. Chinese Remainder Theorem. Zn. Euler's Totient Function. Euler's Theorem. Homework Problems. 8. Math with AES and Elliptic Curves.

Introduction. Notation. Groups. Fields. Mathematics of Rijndael. Elliptic Curve Cryptography. Homework.

II. AUTHENTICATION.

9. Overview of Authentication Systems.

Password-Based Authentication. Address-Based Authentication. Cryptographic Authentication Protocols. Who Is Being Authenticated? Passwords as Cryptographic Keys. Eavesdropping and Server Database Reading. Trusted Intermediaries. Session Key Establishment. Delegation. Homework. 10. Authentication of People.

Passwords. On-Line Password Guessing. Off-Line Password Guessing. How Big Should a Secret Be? Eavesdropping. Passwords and Careless Users. Initial Password Distribution. Authentication Tokens. Physical Access. Biometrics. Homework. 11. Security Handshake Pitfalls.

Login Only. Mutual Authentication. Integrity/Encryption for Data. Mediated Authentication (with KDC). Nonce Types. Picking Random Numbers. Performance Considerations. Authentication Protocol Checklist. Homework. 12. Strong Password Protocols.

Introduction. Lamport's Hash. Strong Password Protocols. Strong Password Credentials. Strong Password Credentials Download Protocols. Homework.

III. STANDARDS.

13. Kerberos V4.

Introduction. Tickets and Ticket-Granting Tickets. Configuration. Logging Into the Network. Replicated KDC's. Realms. Interrealm Authentication. Key Version Numbers. Encryption for Privacy and Integrity. Encryption for Integrity Only. Network Layer Addresses in Tickets. Message Formats. Homework. 14. Kerberos V5.

ASN.1. Names. Delegation of Rights. Ticket Lifetimes. Key Versions. Making Master Keys in Different Realms Different. Optimizations. Cryptographic Algorithms. Hierarchy of Realms. Evading Password-Guessing Attacks. Key Inside Authenticator. Double TGT Authentication. PKINIT-Public Keys for Users. KDC Database. Kerberos V5 Messages. Homework. 15. PKI (Public Key Infrastructure).

Introduction. Some Terminology. PKI Trust Models. Revocation. Directories and PKI. PKIX and X.509. X.509 and PKIX Certificates. Authorization Futures. Homework. 16. Real-time Communication Security.

What Layer? Session Key Establishment. Perfect Forward Secrecy. PFS-Foilage. Denial-of-Service/Clogging Protection. Endpoint Identifier Hiding. Live Partner Reassurance. Arranging for Parallel Computation. Session Resumption. Plausible Deniability. Data Stream Protection. Negotiating Crypto Parameters. Easy Homework. Homework. 17. IPsec: AH and ESP.

Overview of Ipsec. IP and Ipv6. AH (Authentication Header). ESP (Encapsulating Security Payload). So, Do We Need AH? Comparison of Encodings. Easy Homework. Homework. 18. IPsec: IKE.

Photuris. SKIP. History of IKE. IKE Phases. Phase 1 IKE. Phase - 2 IKE: Setting up Ipsec Sas. ISAKMP/IKE Encoding. Homework. 19. SSL/TLS.

Introduction. Using TCP. Quick TCP. Quick History. SSL/TLS Basic Protocol. Session Resumption. Computing the Keys. Client Authentication. PKI as Deployed by SSL. Version Numbers. Negotiating Cipher Suites. Negotiating Compression Method. Attacks Fixed in v3. Exportability. Encoding. Further Reading. Easy Homework. Homework.

IV. ELECTRONIC MAIL.

20. Electronic Mail Security.

Distribution Lists. Store and Forward. Security Services for Electronic Mail. Establishing Keys. Privacy. Authentication of the Source. Message Integrity. Non-Repudiation. Proof of Submission. Proof of Delivery. Message Flow Confidentiality. Anonymity. Containment. Annoying Text Format Issues. Names and Addresses. Verifying When a Message Was Really Sent. Homework. 21. PEM & S/MIME.

Introduction. Structure of a PEM Message. Establishing Keys. Some PEM History. PEM Certificate Hierarchy. Certificate Revocation Lists (CRLs). Reformatting Data to Get Through Mailers. General Structure of a PEM Message. Encryption. Source Authentication and Integrity Protection. Multiple Recipients. Bracketing PEM Messages. Forwarding and Enclosures. Unprotected Information. Message Formats. DES-CBC as MIC Doesn't Work. Differences in S/MIME. S/MIME Certificate Hierarchy. Homework. 22. PGP (Pretty Good Privacy).

Introduction. Overview. Key Distribution. Efficient Encoding. Certificate and Key Revocation. Signature Types. Your Private Key. Key Rings. Anomalies. Object Formats.

V. LEFTOVERS.

23. Firewalls.

Packet Filters. Application Level Gateway. Encrypted Tunnels. Comparisons. Why Firewalls Don't Work. Denial-of-Service Attacks. Should Firewalls Go Away? 24. More Security Systems.

NetWare V3. NetWare V4. KryptoKnight. DASS/SPX. Lotus Notes Security. DCE Security. Microsoft Windows Security. Network Denial of Service. Clipper. Homework. 25. Web Issues.

Introduction. URLs/URIs. HTTP. HTTP Digest Authentication. Cookies. Other Web Security Problems. Homework. 26. Folklore.

Perfect Forward Secrecy. Change Keys Periodically. Multiplexing Flows over a Single SA. Use Different Keys in the Two Directions. Use Different Secret Keys for Encryption vs. Integrity Protection. Use Different Keys for Different Purposes. Use Different Keys for Signing vs. Encryption. Have Both Sides Contribute to the Master Key. Don't Let One Side Determine the Key. Hash in a Constant When Hashing a Password. HMAC Rather than Simple MD. Key Expansion. Randomly Chosen Ivs. Use of Nonces in Protocols. Don't Let Encrypted Data Begin with a Constant. Don't Let Encrypted Data Begin with a Predictable Value. Compress Data Before Encrypting It. Don't Do Encryption Only. Avoiding Weak Keys. Minimal vs. Redundant Designs. Overestimate the Size of Key. Hardware Random Number Generators. Timing Attacks. Put Checksums at the End of Data. Forward Compatibility. Negotiating Parameters. Homework. Bibliography.
Glossary.
Index.

Updates

Errata

  • Page 67. "Why permute" box: Ignore the second paragraph. The initial permutation of decryption is the same as the initial permutation of encryption.
  • Page 83. Fig 3-23: subscripts R and B should be r and b.
  • Page 113. Third paragraph of 4.4.1.3: Ignore the rest of the paragraph starting at "Another reason to do EDE..." since the initial permutation of decryption is the same as the initial permutation of encryption.
  • Page 115. Homework Problem 7: the parenthetical remark is wrong, so the problem is probably not worth doing.
  • Page 170 (6.4.4): EFF98 should be ELGA85.
  • Page 201. Last two lines (8.4.1): property B should be property C while property C should be property D.
  • Page 211. Homework Problem 7: right hand side should have a and b instead of b and c.
  • Page 272. (11.3.3, last line of 1): "steals Alice's private key" should be "steals Bob's private key".
  • Page 310 (13.4.1): first paragraph: "the KDC returns the credentials to the KDC" should be "the KDC returns the credentials to the workstation"
  • Page 547. In the picture, the line "MIC (message digest signed with Bob's private key)" should instead be "MIC (message digest signed with Alice's private key)".
  • Page 649. (25.6.6): FORD94 should be FU01.

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