Elizabeth D. Zwicky

Building Internet Firewalls (eBook, PDF)

• Format: PDF

Produktbeschreibung

In the five years since the first edition of this classic book was published, Internet use has exploded. The commercial world has rushed headlong into doing business on the Web, often without integrating sound security technologies and policies into their products and methods. The security risks--and the need to protect both business and personal data--have never been greater. We've updated Building Internet Firewalls to address these newer risks.What kinds of security threats does the Internet pose? Some, like password attacks and the exploiting of known security holes, have been around since the early days of networking. And others, like the distributed denial of service attacks that crippled Yahoo, E-Bay, and other major e-commerce sites in early 2000, are in current headlines.Firewalls, critical components of today's computer networks, effectively protect a system from most Internet security threats. They keep damage on one part of the network--such as eavesdropping, a worm program, or file damage--from spreading to the rest of the network. Without firewalls, network security problems can rage out of control, dragging more and more systems down.Like the bestselling and highly respected first edition, Building Internet Firewalls, 2nd Edition, is a practical and detailed step-by-step guide to designing and installing firewalls and configuring Internet services to work with a firewall. Much expanded to include Linux and Windows coverage, the second edition describes:Firewall technologies: packet filtering, proxying, network address translation, virtual private networksArchitectures such as screening routers, dual-homed hosts, screened hosts, screened subnets, perimeter networks, internal firewallsIssues involved in a variety of new Internet services and protocols through a firewallEmail and News Web services and scripting languages (e.g., HTTP, Java, JavaScript, ActiveX, RealAudio, RealVideo)File transfer and sharing services such as NFS, SambaRemote access services such as Telnet, the BSD "e;r"e; commands, SSH, BackOrifice 2000 Real-time conferencing services such as ICQ and talk Naming and directory services (e.g., DNS, NetBT, the Windows Browser) Authentication and auditing services (e.g., PAM, Kerberos, RADIUS); Administrative services (e.g., syslog, SNMP, SMS, RIP and other routing protocols, and ping and other network diagnostics) Intermediary protocols (e.g., RPC, SMB, CORBA, IIOP)Database protocols (e.g., ODBC, JDBC, and protocols for Oracle, Sybase, and Microsoft SQL Server)The book's complete list of resources includes the location of many publicly available firewall construction tools.

---

Dieser Download kann aus rechtlichen Gründen nur mit Rechnungsadresse in A, B, BG, CY, CZ, D, DK, EW, E, FIN, F, GR, HR, H, IRL, I, LT, L, LR, M, NL, PL, P, R, S, SLO, SK ausgeliefert werden.

Produktdetails

• Verlag: O'Reilly Media
• Seitenzahl: 896
• Erscheinungstermin: 26. Juni 2000
• Englisch
• ISBN-13: 9780596515669
• Artikelnr.: 52950646

Autorenporträt

Simon Cooper is a computer professional currently working in Silicon Valley. He has worked in different computer-related fields ranging from hardware through operating systems and device drivers to application software and systems support in both commercial and educational environments. He has an interest in the activities of the Internet Engineering Task Force (IETF) and USENIX, is a member of the British Computer Conservation Society, and is a founding member of the Computer Museum History Center. Simon has released a small number of his own open source programs and has contributed time and code to the XFree86 project. In his spare time, Simon likes to play ice hockey, solve puzzles of a mathematical nature, and tinker with Linux.

Inhaltsangabe

Preface
Scope of This Book
Audience
Platforms
Products
Examples
Conventions Used in This Book
Comments and Questions
Acknowledgments for the Second Edition
Acknowledgments for the First Edition
Part I: Network Security
Chapter 1: Why Internet Firewalls?
1.1 What Are You Trying to Protect?
1.2 What Are You Trying to Protect Against?
1.3 Who Do You Trust?
1.4 How Can You Protect Your Site?
1.5 What Is an Internet Firewall?
1.6 Religious Arguments
Chapter 2: Internet Services
2.1 Secure Services and Safe Services
2.2 The World Wide Web
2.3 Electronic Mail and News
2.4 File Transfer, File Sharing, and Printing
2.5 Remote Access
2.6 Real-Time Conferencing Services
2.7 Naming and Directory Services
2.8 Authentication and Auditing Services
2.9 Administrative Services
2.10 Databases
2.11 Games
Chapter 3: Security Strategies
3.1 Least Privilege
3.2 Defense in Depth
3.3 Choke Point
3.4 Weakest Link
3.5 Fail-Safe Stance
3.6 Universal Participation
3.7 Diversity of Defense
3.8 Simplicity
3.9 Security Through Obscurity
Part II: Building Firewalls
Chapter 4: Packets and Protocols
4.1 What Does a Packet Look Like?
4.2 IP
4.3 Protocols Above IP
4.4 Protocols Below IP
4.5 Application Layer Protocols
4.6 IP Version 6
4.7 Non-IP Protocols
4.8 Attacks Based on Low-Level Protocol Details
Chapter 5: Firewall Technologies
5.1 Some Firewall Definitions
5.2 Packet Filtering
5.3 Proxy Services
5.4 Network Address Translation
5.5 Virtual Private Networks
Chapter 6: Firewall Architectures
6.1 Single-Box Architectures
6.2 Screened Host Architectures
6.3 Screened Subnet Architectures
6.4 Architectures with Multiple Screened Subnets
6.5 Variations on Firewall Architectures
6.6 Terminal Servers and Modem Pools
6.7 Internal Firewalls
Chapter 7: Firewall Design
7.1 Define Your Needs
7.2 Evaluate the Available Products
7.3 Put Everything Together
Chapter 8: Packet Filtering
8.1 What Can You Do with Packet Filtering?
8.2 Configuring a Packet Filtering Router
8.3 What Does the Router Do with Packets?
8.4 Packet Filtering Tips and Tricks
8.5 Conventions for Packet Filtering Rules
8.6 Filtering by Address
8.7 Filtering by Service
8.8 Choosing a Packet Filtering Router
8.9 Packet Filtering Implementations for General-Purpose Computers
8.10 Where to Do Packet Filtering
8.11 What Rules Should You Use?
8.12 Putting It All Together
Chapter 9: Proxy Systems
9.1 Why Proxying?
9.2 How Proxying Works
9.3 Proxy Server Terminology
9.4 Proxying Without a Proxy Server
9.5 Using SOCKS for Proxying
9.6 Using the TIS Internet Firewall Toolkit for Proxying
9.7 Using Microsoft Proxy Server
9.8 What If You Can't Proxy?
Chapter 10: Bastion Hosts
10.1 General Principles
10.2 Special Kinds of Bastion Hosts
10.3 Choosing a Machine
10.4 Choosing a Physical Location
10.5 Locating Bastion Hosts on the Network
10.6 Selecting Services Provided by a Bastion Host
10.7 Disabling User Accounts on Bastion Hosts
10.8 Building a Bastion Host
10.9 Securing the Machine
10.10 Disabling Nonrequired Services
10.11 Operating the Bastion Host
10.12 Protecting the Machine and Backups
Chapter 11: Unix and Linux Bastion Hosts
11.1 Which Version of Unix?
11.2 Securing Unix
11.3 Disabling Nonrequired Services
11.4 Installing and Modifying Services
11.5 Reconfiguring for Production
11.6 Running a Security Audit
Chapter 12: Windows NT and Windows 2000 Bastion Hosts
12.1 Approaches to Building Windows NT Bastion Hosts
12.2 Which Version of Windows NT?
12.3 Securing Windows NT
12.4 Disabling Nonrequired Services
12.5 Installing and Modifying Services
Part III: Internet Services
Chapter 13: Internet Services and Firewalls
13.1 Attacks Against Internet Services
13.2 Evaluating the Risks of a Service
13.3 Analyzing Other Protocols
13.4 What Makes a Good Firewalled Service?
13.5 Choosing Security-Critical Programs
13.6 Controlling Unsafe Configurations
Chapter 14: Intermediary Protocols
14.1 Remote Procedure Call (RPC)
14.2 Distributed Component Object Model (DCOM)
14.3 NetBIOS over TCP/IP (NetBT)
14.4 Common Internet File System (CIFS) and Server Message Block (SMB)
14.5 Common Object Request Broker Architecture (CORBA) and Internet Inter-Orb Protocol (IIOP)
14.6 ToolTalk
14.7 Transport Layer Security (TLS) and Secure Socket Layer (SSL)
14.8 The Generic Security Services API (GSSAPI)
14.9 IPsec
14.10 Remote Access Service (RAS)
14.11 Point-to-Point Tunneling Protocol (PPTP)
14.12 Layer 2 Transport Protocol (L2TP)
Chapter 15: The World Wide Web
15.1 HTTP Server Security
15.2 HTTP Client Security
15.3 HTTP
15.4 Mobile Code and Web-Related Languages
15.5 Cache Communication Protocols
15.6 Push Technologies
15.7 RealAudio and RealVideo
15.8 Gopher and WAIS
Chapter 16: Electronic Mail and News
16.1 Electronic Mail
16.2 Simple Mail Transfer Protocol (SMTP)
16.3 Other Mail Transfer Protocols
16.4 Microsoft Exchange
16.5 Lotus Notes and Domino
16.6 Post Office Protocol (POP)
16.7 Internet Message Access Protocol (IMAP)
16.8 Microsoft Messaging API (MAPI)
16.9 Network News Transfer Protocol (NNTP)
Chapter 17: File Transfer, File Sharing, and Printing
17.1 File Transfer Protocol (FTP)
17.2 Trivial File Transfer Protocol (TFTP)
17.3 Network File System (NFS)
17.4 File Sharing for Microsoft Networks
17.5 Summary of Recommendations for File Sharing
17.6 Printing Protocols
17.7 Related Protocols
Chapter 18: Remote Access to Hosts
18.1 Terminal Access (Telnet)
18.2 Remote Command Execution
18.3 Remote Graphical Interfaces
Chapter 19: Real-Time Conferencing Services
19.1 Internet Relay Chat (IRC)
19.2 ICQ
19.3 talk
19.4 Multimedia Protocols
19.5 NetMeeting
19.6 Multicast and the Multicast Backbone (MBONE)
Chapter 20: Naming and Directory Services
20.1 Domain Name System (DNS)
20.2 Network Information Service (NIS)
20.3 NetBIOS for TCP/IP Name Service and Windows Internet Name Service
20.4 The Windows Browser
20.5 Lightweight Directory Access Protocol (LDAP)
20.6 Active Directory
20.7 Information Lookup Services
Chapter 21: Authentication and Auditing Services
21.1 What Is Authentication?
21.2 Passwords
21.3 Authentication Mechanisms
21.4 Modular Authentication for Unix
21.5 Kerberos
21.6 NTLM Domains
21.7 Remote Authentication Dial-in User Service (RADIUS)
21.8 TACACS and Friends
21.9 Auth and identd
Chapter 22: Administrative Services
22.1 System Management Protocols
22.2 Routing Protocols
22.3 Protocols for Booting and Boot-Time Configuration
22.4 ICMP and Network Diagnostics
22.5 Network Time Protocol (NTP)
22.6 File Synchronization
22.7 Mostly Harmless Protocols
Chapter 23: Databases and Games
23.1 Databases
23.2 Games
Chapter 24: Two Sample Firewalls
24.1 Screened Subnet Architecture
24.2 Merged Routers and Bastion Host Using General-Purpose Hardware
Part IV: Keeping Your Site Secure
Chapter 25: Security Policies
25.1 Your Security Policy
25.2 Putting Together a Security Policy
25.3 Getting Strategic and Policy Decisions Made
25.4 What If You Can't Get a Security Policy?
Chapter 26: Maintaining Firewalls
26.1 Housekeeping
26.2 Monitoring Your System
26.3 Keeping up to Date
26.4 How Long Does It Take?
26.5 When Should You Start Over?
Chapter 27: Responding to Security Incidents
27.1 Responding to an Incident
27.2 What to Do After an Incident
27.3 Pursuing and Capturing the Intruder
27.4 Planning Your Response
27.5 Being Prepared
Part V: Appendixes
Appendix A: Resources
A.1 Web Pages
A.2 FTP Sites
A.3 Mailing Lists
A.4 Newsgroups
A.5 Response Teams
A.6 Other Organizations
A.7 Conferences
A.8 Papers
A.9 Books
Appendix B: Tools
B.1 Authentication Tools
B.2 Analysis Tools
B.3 Packet Filtering Tools
B.4 Proxy Systems Tools
B.5 Daemons
B.6 Utilities
Appendix C: Cryptography
C.1 What Are You Protecting and Why?
C.2 Key Components of Cryptographic Systems
C.3 Combined Cryptography
C.4 What Makes a Protocol Secure?
C.5 Information About Algorithms
Colophon