TCP/IP详解 卷1：协议(英文版·第2版)[美]福尔、史蒂文斯机械工业出版社【现货实拍 可开发票 下单速发 正版 下载 pdf 百度网盘 epub 免费 2025 电子书 mobi 在线

　　《TCP/IP详解》是已故网络专家、著名技术作家W.RichardStevens的传世之作，内容详尽且极具专业，被誉为TCP/IP领域的不朽名著。

《TCP/IP详解·卷1：协议（英文版第2版）》是《TCP/IP详解》的第1卷，主要讲述TCP/IP协议，结合大量实例讲述TCP/IP协议族的定义原因，以及在各种不同的操作系统中的应用及工作方式。第2版在保留Stevens卓越的知识体系和写作风格的基础上，新加入的作者KevinR.Fall结合其作为TCP/IP协议研究领域领导者的尖端经验来更新本书，反映了全新的协议和很好的实践方法。首先，他介绍了TCP/IP的核心目标和体系结构概念，展示了它们如何能连接不同的网络和支持多个服务同时运行。接着，他详细解释了IPv4和IPv6网络中的互联网地址。然后，他采用自底向上的方式来介绍TCP/IP的结构和功能：从链路层协议（如Ethernet和Wi-Fi），经网络层、传输层到应用层。

书中依次全面介绍了ARP、DHCP、NAT、防火墙、ICMPv4/ICMPv6、广播、多播、UDP、DNS等，并详细介绍了可靠传输和TCP，包括连接管理、超时、重传、交互式数据流和拥塞控制。此外，还介绍了安全和加密的基础知识，阐述了当前用于保护安全和隐私的重要协议，包括EAP、IPsec、TLS、DNSSEC和DKIM。

本书适合任何希望理解TCP/IP协议如何实现的人阅读，更是TCP/IP领域研究人员和开发人员的专业参考书。无论你是初学者还是功底深厚的网络领域高手，本书都是案头，将帮助你更深入和直观地理解整个协议族，构建更好的应用和运行更可靠、更高效的网络。

本书特色：

·W.RichardStevens传奇般的TCP/IP指南，现在被顶端网络专家KevinR.Fall更新，反映了新一代的基于TCP/IP的网络技术。

·展示每种协议的实际工作原理，并解释其来龙去脉。

·新增加的内容包括RPC、访问控制、身份认证、隐私保护、NFS、SMB/CIFS、DHCP、NAT、防火墙、电子邮件、Web、Web服务、无线、无线安全等。

Foreword v

Chapter Introduction

1.1 Architectural Principles

1.1.1 Packets, Connections, and Datagrams

1.1.2 The End-to-End Argument and Fate Sharing

1.1.3 Error Control and Flow Control

1.2 Design and Implementation

1.2.1 Layering

1.2.2 Multiplexing, Demultiplexing, and Encapsulation in Layered

Implementations

1.3 The Architecture and Protocols of the TCP/IP Suite

1.3.1 The ARPANET Reference Model

1.3.2 Multiplexing, Demultiplexing, and Encapsulation in TCP/IP

1.3.3 Port Numbers

1.3.4 Names, Addresses, and the DNS

1.4 Internets, Intranets, and Extranets

1.5 Designing Applications

1.5.1 Client/Server

1.5.2 Peer-to-Peer

1.5.3 Application Programming Interfaces (APIs)

Preface to the Second Edition vii

Adapted Preface to the First Edition xiii

1.6 Standardization Process

1.6.1 Request for Comments (RFC)

1.6.2 Other Standards

1.7 Implementations and Software Distributions

1.8 Attacks Involving the Internet Architecture

1.9 Summary

1.10 References

Chapter The Internet Address Architecture

2.1 Introduction

2.2 Expressing IP Addresses

2.3 Basic IP Address Structure

2.3.1 Classful Addressing

2.3.2 Subnet Addressing

2.3.3 Subnet Masks

2.3.4 Variable-Length Subnet Masks (VLSM)

2.3.5 Broadcast Addresses

2.3.6 IPv6 Addresses and Interface Identifiers

2.4 CIDR and Aggregation

2.4.1 Prefixes

2.4.2 Aggregation

2.5 Special-Use Addresses

2.5.1 Addressing IPv4/IPv6 Translators

2.5.2 Multicast Addresses

2.5.3 IPv4 Multicast Addresses

2.5.4 IPv6 Multicast Addresses

2.5.5 Anycast Addresses

2.6 Allocation

2.6.1 Unicast

2.6.2 Multicast

2.7 Unicast Address Assignment

2.7.1 Single Provider/No Network/Single Address

2.7.2 Single Provider/Single Network/Single Address

2.7.3 Single Provider/Multiple Networks/Multiple Addresses

2.7.4 Multiple Providers/Multiple Networks/Multiple Addresses

(Multihoming)

Contents xvii

2.8 Attacks Involving IP Addresses

2.9 Summary

2.10 References

Chapter Link Layer

3.1 Introduction

3.2 Ethernet and the IEEE LAN/MAN Standards

3.2.1 The IEEE LAN/MAN Standards

3.2.2 The Ethernet Frame Format

3.2.3 .1p/q: Virtual LANs and QoS Tagging

3.2.4 .1AX: Link Aggregation (Formerly .3ad)

3.3 Full Duplex, Power Save, Autonegotiation, and .1X Flow Control

3.3.1 Duplex Mismatch

3.3.2 Wake-on LAN (WoL), Power Saving, and Magic Packets

3.3.3 Link-Layer Flow Control

3.4 Bridges and Switches

3.4.1 Spanning Tree Protocol (STP)

3.4.2 .1ak: Multiple Registration Protocol (MRP)

3.5 Wireless LANs—IEEE .11(Wi-Fi)

3.5.1 .11 Frames

3.5.2 Power Save Mode and the Time Sync Function (TSF)

3.5.3 .11 Media Access Control

3.5.4 Physical-Layer Details: Rates, Channels, and Frequencies

3.5.5 Wi-Fi Security

3.5.6 Wi-Fi Mesh (802.11s)

3.6 Point-to-Point Protocol (PPP)

3.6.1 Link Control Protocol (LCP)

3.6.2 Multi link PPP (MP)

3.6.3 Compression Control Protocol (CCP)

3.6.4 PPP Authentication

3.6.5 Network Control Protocols (NCPs)

3.6.6 Header Compression

3.6.7 Example

3.7 Loopback

3.8 MTU and Path MTU

3.9 Tunneling Basics

3.9.1 Unidirectional Links

x viii Contents

3.10 Attacks on the Link Layer

3.11 Summary

3.12 References

Chapter ARP: Address Resolution Protocol

4.1 Introduction

4.2 An Example

4.2.1 Direct Delivery and ARP

4.3 ARP Cache

4.4 ARP Frame Format

4.5 ARP Examples

4.5.1 Normal Example

4.5.2 ARP Request to a Nonexistent Host

4.6 ARP Cache Timeout

4.7 Proxy ARP

4.8 Gratuitous ARP and Address Conflict Detection (ACD)

4.9 The arp Command

4.10 Using ARP to Set an Embedded Device’s IPv4 Address

4.11 Attacks Involving ARP

4.12 Summary

4.13 References

Chapter The Internet Protocol (IP)

5.1 Introduction

5.2 IPv4 and IPv6 Headers

5.2.1 IP Header Fields

5.2.2 The Internet Checksum

5.2.3 DS Field and ECN (Formerly Called the ToS Byte or IPv6 Traffic Class)

5.2.4 IP Options

5.3 IPv6 Extension Headers

5.3.1 IPv6 Options

5.3.2 Routing Header

5.3.3 Fragment Header

5.4 IP Forwarding

5.4.1 Forwarding Table

5.4.2 IP Forwarding Actions

Contents xix

5.4.3 Examples

5.4.4 Discussion

5.5 Mobile IP

5.5.1 The Basic Model: Bidirectional Tunneling

5.5.2 Route Optimization (RO)

5.5.3 Discussion

5.6 Host Processing of IP Datagrams

5.6.1 Host Models

5.6.2 Address Selection

5.7 Attacks Involving IP

5.8 Summary

5.9 References

Chapter System Configuration: DHCP and Autoconfiguration

6.1 Introduction

6.2 Dynamic Host Configuration Protocol (DHCP)

6.2.1 Address Pools and Leases

6.2.2 DHCP and BOOTP Message Format

6.2.3 DHCP and BOOTP Options

6.2.4 DHCP Protocol Operation

6.2.5 DHCPv6

6.2.6 Using DHCP with Relays

6.2.7 DHCP Authentication

6.2.8 Reconfigure Extension

6.2.9 Rapid Commit

6.2.10 Location Information (LCI and LoST)

6.2.11 Mobility and Handoff Information (MoS and ANDSF)

6.2.12 DHCP Snooping

6.3 Stateless Address Autoconfiguration (SLAAC)

6.3.1 Dynamic Configuration of IPv4 Link-Local Addresses

6.3.2 IPv6 SLAAC for Link-Local Addresses

6.4 DHCP and DNS Interaction

6.5 PPP over Ethernet (PPPoE)

6.6 Attacks Involving System Configuration

6.7 Summary

6.8 References

xx Contents

Chapter Firewalls and Network Address Translation (NAT)

7.1 Introduction

7.2 Firewalls

7.2.1 Packet-Filtering Firewalls

7.2.2 Proxy Firewalls

7.3 Network Address Translation (NAT)

7.3.1 Traditional NAT: Basic NAT and NAPT

7.3.2 Address and Port Translation Behavior

7.3.3 Filtering Behavior

7.3.4 Servers behind NATs

7.3.5 Hairpinning and NAT Loopback

7.3.6 NAT Editors

7.3.7 Service Provider NAT (SPNAT) and Service Provider IPv6

Transition

7.4 NAT Traversal

7.4.1 Pinholes and Hole Punching

7.4.2 UNilateral Self-Address Fixing (UNSAF)

7.4.3 Session Traversal Utilities for NAT (STUN)

7.4.4 Traversal Using Relays around NAT (TURN)

7.4.5 Interactive Connectivity Establishment (ICE)

7.5 Configuring Packet-Filtering Firewalls and NATs

7.5.1 Firewall Rules

7.5.2 NAT Rules

7.5.3 Direct Interaction with NATs and Firewalls: UPnP, NAT-PMP,

and PCP

7.6 NAT for IPv4/IPv6 Coexistence and Transition

7.6.1 Dual-Stack Lite (DS-Lite)

7.6.2 IPv4/IPv6 Translation Using NATs and ALGs

7.7 Attacks Involving Firewalls and NATs

7.8 Summary

7.9 References

Chapter ICMPv4 and ICMPv6: Internet Control Message Protocol

8.1 Introduction

8.1.1 Encapsulation in IPv4 and IPv6

8.2 ICMP Messages

8.2.1 ICMPv4 Messages

Contents xxi

8.2.2 ICMPv6 Messages

8.2.3 Processing of ICMP Messages

8.3 ICMP Error Messages

8.3.1 Extended ICMP and Multipart Messages

8.3.2 Destination Unreachable (ICMPv4 Type , ICMPv6 Type )

and Packet Too Big (ICMPv6 Type )

8.3.3 Redirect (ICMPv4 Type , ICMPv6 Type )

8.3.4 ICMP Time Exceeded (ICMPv4 Type , ICMPv6 Type )

8.3.5 Parameter Problem (ICMPv4 Type , ICMPv6 Type )

8.4 ICMP Query/Informational Messages

8.4.1 Echo Request/Reply (ping) (ICMPv4 Types /8, ICMPv6 Types

129/128)

8.4.2 Router Discovery: Router Solicitation and Advertisement

(ICMPv4 Types , )

8.4.3 Home Agent Address Discovery Request/Reply (ICMPv6 Types

144/145)

8.4.4 Mobile Prefix Solicitation/Advertisement (ICMPv6 Types /147)

8.4.5 Mobile IPv6 Fast Handover Messages (ICMPv6 Type )

8.4.6 Multicast Listener Query/Report/Done (ICMPv6 Types

130/131/132)

8.4.7 Version Multicast Listener Discovery (MLDv2) (ICMPv6

Type )

8.4.8 Multicast Router Discovery (MRD) (IGMP Types /49/50,

ICMPv6 Types /152/153)

8.5 Neighbor Discovery in IPv6

8.5.1 ICMPv6 Router Solicitation and Advertisement (ICMPv6 Types

133, )

8.5.2 ICMPv6 Neighbor Solicitation and Advertisement (IMCPv6 Types

135, )

8.5.3 ICMPv6 Inverse Neighbor Discovery Solicitation/Advertisement

(ICMPv6 Types /142)

8.5.4 Neighbor Unreachability Detection (NUD)

8.5.5 Secure Neighbor Discovery (SEND)

8.5.6 ICMPv6 Neighbor Discovery (ND) Options

8.6 Translating ICMPv4 and ICMPv6

8.6.1 Translating ICMPv4 to ICMPv6

8.6.2 Translating ICMPv6 to ICMPv4

8.7 Attacks Involving ICMP

x xii Contents

8.8 Summary

8.9 References

Chapter Broadcasting and Local Multicasting (IGMP and MLD)

9.1 Introduction

9.2 Broadcasting

9.2.1 Using Broadcast Addresses

9.2.2 Sending Broadcast Datagrams

9.3 Multicasting

9.3.1 Converting IP Multicast Addresses to MAC/Ethernet Addresses

9.3.2 Examples

9.3.3 Sending Multicast Datagrams

9.3.4 Receiving Multicast Datagrams

9.3.5 Host Address Filtering

9.4 The Internet Group Management Protocol (IGMP) and Multicast Listener

Discovery Protocol (MLD)

9.4.1 IGMP and MLD Processing by Group Members (“Group

Member Part”)

9.4.2 IGMP and MLD Processing by Multicast Routers (“Multicast

Router Part”)

9.4.3 Examples

9.4.4 Lightweight IGMPv3 and MLDv2

9.4.5 IGMP and MLD Robustness

9.4.6 IGMP and MLD Counters and Variables

9.4.7 IGMP and MLD Snooping

9.5 Attacks Involving IGMP and MLD

9.6 Summary

9.7 References

Chapter User Datagram Protocol (UDP) and IP Fragmentation

10.1 Introduction

10.2 UDP Header

10.3 UDP Checksum

10.4 Examples

10.5 UDP and IPv6

10.5.1 Teredo: Tunneling IPv6 through IPv4 Networks

Contents xxiii

10.6 UDP-Lite

10.7 IP Fragmentation

10.7.1 Example: UDP/IPv4 Fragmentation

10.7.2 Reassembly Timeout

10.8 Path MTU Discovery with UDP

10.8.1 Example

10.9 Interaction between IP Fragmentation and ARP/ND

10.10 Maximum UDP Datagram Size

10.10.1 Implementation Limitations

10.10.2 Datagram Truncation

10.11 UDP Server Design

10.11.1 IP Addresses and UDP Port Numbers

10.11.2 Restricting Local IP Addresses

10.11.3 Using Multiple Addresses

10.11.4 Restricting Foreign IP Address

10.11.5 Using Multiple Servers per Port

10.11.6 Spanning Address Families: IPv4 and IPv6

10.11.7 Lack of Flow and Congestion Control

10.12 Translating UDP/IPv4 and UDP/IPv6 Datagrams

10.13 UDP in the Internet

10.14 Attacks Involving UDP and IP Fragmentation

10.15 Summary

10.16 References

Chapter Name Resolution and the Domain Name System (DNS)

11.1 Introduction

11.2 The DNS Name Space

11.2.1 DNS Naming Syntax

11.3 Name Servers and Zones

11.4 Caching

11.5 The DNS Protocol

11.5.1 DNS Message Format

11.5.2 The DNS Extension Format (EDNS0)

11.5.3 UDP or TCP

11.5.4 Question (Query) and Zone Section Format

11.5.5 Answer, Authority, and Additional Information Section Formats

11.5.6 Resource Record Types

x xiv Contents

11.5.7 Dynamic Updates (DNS UPDATE)

11.5.8 Zone Transfers and DNS NOTIFY

11.6 Sort Lists, Round-Robin, and Split DNS

11.7 Open DNS Servers and DynDNS

11.8 Transparency and Extensibility

11.9 Translating DNS from IPv4 to IPv6 (DNS64)

11.10 LLMNR and mDNS

11.11 LDAP

11.12 Attacks on the DNS

11.13 Summary

11.14 References

Chapter TCP: The Transmission Control Protocol (Preliminaries)

12.1 Introduction

12.1.1 ARQ and Retransmission

12.1.2 Windows of Packets and Sliding Windows

12.1.3 Variable Windows: Flow Control and Congestion Control

12.1.4 Setting the Retransmission Timeout

12.2 Introduction to TCP

12.2.1 The TCP Service Model

12.2.2 Reliability in TCP

12.3 TCP Header and Encapsulation

12.4 Summary

12.5 References

Chapter TCP Connection Management

13.1 Introduction

13.2 TCP Connection Establishment and Termination

13.2.1 TCP Half-Close

13.2.2 Simultaneous Open and Close

13.2.3 Initial Sequence Number (ISN)

13.2.4 Example

13.2.5 Timeout of Connection Establishment

13.2.6 Connections and Translators

13.3 TCP Options

13.3.1 Maximum Segment Size (MSS) Option

Contents xxv

13.3.2 Selective Acknowledgment (SACK) Options

13.3.3 Window Scale (WSCALE or WSOPT) Option

13.3.4 Timestamps Option and Protection against Wrapped

Sequence Numbers (PAWS)

13.3.5 User Timeout (UTO) Option

13.3.6 Authentication Option (TCP-AO)

13.4 Path MTU Discovery with TCP

13.4.1 Example

13.5 TCP State Transitions

13.5.1 TCP State Transition Diagram

13.5.2 TIME_WAIT (2MSL Wait) State

13.5.3 Quiet Time Concept

13.5.4 FIN_WAIT_2 State

13.5.5 Simultaneous Open and Close Transitions

13.6 Reset Segments

13.6.1 Connection Request to Nonexistent Port

13.6.2 Aborting a Connection

13.6.3 Half-Open Connections

13.6.4 TIME-WAIT Assassination (TWA)

13.7 TCP Server Operation

13.7.1 TCP Port Numbers

13.7.2 Restricting Local IP Addresses

13.7.3 Restricting Foreign Endpoints

13.7.4 Incoming Connection Queue

13.8 Attacks Involving TCP Connection Management

13.9 Summary

13.10 References

Chapter TCP Timeout and Retransmission

14.1 Introduction

14.2 Simple Timeout and Retransmission Example

14.3 Setting the Retransmission Timeout (RTO)

14.3.1 The Classic Method

14.3.2 The Standard Method

14.3.3 The Linux Method

14.3.4 RTT Estimator Behaviors

14.3.5 RTTM Robustness to Loss and Reordering

x xvi Contents

14.4 Timer-Based Retransmission

14.4.1 Example

14.5 Fast Retransmit

14.5.1 Example

14.6 Retransmission with Selective Acknowledgments

14.6.1 SACK Receiver Behavior

14.6.2 SACK Sender Behavior

14.6.3 Example

14.7 Spurious Timeouts and Retransmissions

14.7.1 Duplicate SACK (DSACK) Extension

14.7.2 The Eifel Detection Algorithm

14.7.3 Forward-RTO Recovery (F-RTO)

14.7.4 The Eifel Response Algorithm

14.8 Packet Reordering and Duplication

14.8.1 Reordering

14.8.2 Duplication

14.9 Destination Metrics

14.10 Repacketization

14.11 Attacks Involving TCP Retransmission

14.12 Summary

14.13 References

Chapter TCP Data Flow and Window Management

15.1 Introduction

15.2 Interactive Communication

15.3 Delayed Acknowledgments

15.4 Nagle Algorithm

15.4.1 Delayed ACK and Nagle Algorithm Interaction

15.4.2 Disabling the Nagle Algorithm

15.5 Flow Control and Window Management

15.5.1 Sliding Windows

15.5.2 Zero Windows and the TCP Persist Timer

15.5.3 Silly Window Syndrome (SWS)

15.5.4 Large Buffers and Auto-Tuning

15.6 Urgent Mechanism

15.6.1 Example

15.7 Attacks Involving Window Management

Contents xxvii

15.8 Summary

15.9 References

Chapter TCP Congestion Control

16.1 Introduction

16.1.1 Detection of Congestion in TCP

16.1.2 Slowing Down a TCP Sender

16.2 The Classic Algorithms

16.2.1 Slow Start

16.2.2 Congestion Avoidance

16.2.3 Selecting between Slow Start and Congestion Avoidance

16.2.4 Tahoe, Reno, and Fast Recovery

16.2.5 Standard TCP

16.3 Evolution of the Standard Algorithms

16.3.1 NewReno

16.3.2 TCP Congestion Control with SACK

16.3.3 Forward Acknowledgment (FACK) and Rate Halving

16.3.4 Limited Transmit

16.3.5 Congestion Window Validation (CWV)

16.4 Handling Spurious RTOs—the Eifel Response Algorithm

16.5 An Extended Example

16.5.1 Slow Start Behavior

16.5.2 Sender Pause and Local Congestion (Event )

16.5.3 Stretch ACKs and Recovery from Local Congestion

16.5.4 Fast Retransmission and SACK Recovery (Event )

16.5.5 Additional Local Congestion and Fast Retransmit Events

16.5.6 Timeouts, Retransmissions, and Undoing cwnd Changes

16.5.7 Connection Completion

16.6 Sharing Congestion State

16.7 TCP Friendliness

16.8 TCP in High-Speed Environments

16.8.1 HighSpeed TCP (HSTCP) and Limited Slow Start

16.8.2 Binary Increase Congestion Control (BIC and CUBIC)

16.9 Delay-Based Congestion Control

16.9.1 Vegas

16.9.2 FAST

x xviii Contents

16.9.3 TCP Westwood and Westwood+

16.9.4 Compound TCP

16.10 Buffer Bloat

16.11 Active Queue Management and ECN

16.12 Attacks Involving TCP Congestion Control

16.13 Summary

16.14 References

Chapter TCP Keepalive

17.1 Introduction

17.2 Description

17.2.1 Keepalive Examples

17.3 Attacks Involving TCP Keepalives

17.4 Summary

17.5 References

Chapter Security: EAP, IPsec, TLS, DNSSEC, and DKIM

18.1 Introduction

18.2 Basic Principles of Information Security

18.3 Threats to Network Communication

18.4 Basic Cryptography and Security Mechanisms

18.4.1 Cryptosystems

18.4.2 Rivest, Shamir, and Adleman (RSA) Public Key Cryptography

18.4.3 Diffie-Hellman-Merkle Key Agreement (aka Diffie-Hellman or DH)

18.4.4 Signcryption and Elliptic Curve Cryptography (ECC)

18.4.5 Key Derivation and Perfect Forward Secrecy (PFS)

18.4.6 Pseudorandom Numbers, Generators, and Function Families

18.4.7 Nonces and Salt

18.4.8 Cryptographic Hash Functions and Message Digests

18.4.9 Message Authentication Codes (MACs, HMAC, CMAC, and GMAC)

18.4.10 Cryptographic Suites and Cipher Suites

18.5 Certificates, Certificate Authorities (CAs), and PKIs

18.5.1 Public Key Certificates, Certificate Authorities, and X.509

18.5.2 Validating and Revoking Certificates

18.5.3 Attribute Certificates

Contents xxix

18.6 TCP/IP Security Protocols and Layering

18.7 Network Access Control: .1X, .1AE, EAP, and PANA

18.7.1 EAP Methods and Key Derivation

18.7.2 The EAP Re-authentication Protocol (ERP)

18.7.3 Protocol for Carrying Authentication for Network Access (PANA)

18.8 Layer IP Security (IPsec)

18.8.1 Internet Key Exchange (IKEv2) Protocol

18.8.2 Authentication Header (AH)

18.8.3 Encapsulating Security Payload (ESP)

18.8.4 Multicast

18.8.5 L2TP/IPsec

18.8.6 IPsec NAT Traversal

18.8.7 Example

18.9 Transport Layer Security (TLS and DTLS)

18.9.1 TLS .2

18.9.2 TLS with Datagrams (DTLS)

18.10 DNS Security (DNSSEC)

18.10.1 DNSSEC Resource Records

18.10.2 DNSSEC Operation

18.10.3 Transaction Authentication (TSIG, TKEY, and SIG(0))

18.10.4 DNSSEC with DNS64

18.11 DomainKeys Identified Mail (DKIM)

18.11.1 DKIM Signatures

18.11.2 Example

18.12 Attacks on Security Protocols

18.13 Summary

18.14 References

Glossary of Acronyms

Index

　　KevinR.Fall博士有超过25年的TCP/IP工作经验，并且是互联网架构委员会成员。他是互联网研究任务组中延迟容忍网络研究组（DTNRG）的联席主席，该组致力于在极端和挑战性能的环境中探索网络。他是一位IEEE院士。

　　W.RichardStevens博士（1951—1999）是国际知名的Unix和网络专家，受人尊敬的技术作家和咨询顾问。他教会了一代网络专业人员使用TCP/IP的技能，使互联网成为人们日常生活的中心。Stevens于1999年9月1日去世，年仅48岁。在短暂但精彩的人生中，他著有多部经典的传世之作，包括《TCP/IP详解》（三卷本）、《UNIX网络编程》（两卷本）以及《UNIX环境高级编程》。2000年他被国际专业机构Usenix追授“终身成就奖”。

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ARP应答是直接送到请求端主机的，而是广播的。

The ARP reply is thus sent directly to the requesting host; it is not ordinarilly broadcast (see Section 4.8 for some cases where this rule is altered).

internet这个词第一个字母是否大写决定了它具有不同的含义。internet意思是用一个共同的协议族把多个网络连接在一起。而Internet指的是世界范围内通过TCP/IP互相通信的所有主机集合(超过1 0 0 万台)。 Internet是一个internet,但internet不等 于Internet。

IP has a simple error handling algorithm: throw away the

datagram and try to send an ICMP message back to the source.

以太网数据帧的物理特性是其长度必须在4 6～1 5 0 0字节之间，而数据帧在进入每一层协议栈的时候均会做一些封装。

当目的主机收到一个以太网帧时，就在协议栈中从底向上升，同时去掉各层协议加上的报文首部。每层协议盒都要去检查报文首部的协议标识，以确定接收数据的上层协议。这个过程称作分用。

书籍介绍

【编辑推荐】

本书第1版自1994年出版以来，深受读者欢迎。但是时至今日，第1版的内容有些已经比较陈旧，而且没有涉及IPv6。现在，这部世界领先的TCP/IP畅销书已经被彻底更新，反映了新一代基于TCP/IP的网络技术。这本书仍保留了Stevens卓越的写作风格，简明、清晰，并且可以快速找到要点。这本书虽然超过一千页，但是并不啰嗦，每章解释一个协议或概念，复杂的TCP被分散到多章。我很欣赏本书的一个地方是每章都描述了已有的针对协议的攻击方法。如果你必须自己实现这些协议，并且不希望自己和前人一样遭受同样的攻击，这些信息将是无价的。这本书是日常工作中经常和TCP/IP打交道或进行网络软件开发的人必需的，即使你的工作并不基于IP协议，这本书仍然包含很多你可以用到的好想法。”

——摘自Amazon读者评论

【内容简介】

《TCP/IP详解》是已故网络专家、著名技术作家W. Richard Stevens的传世之作，内容详尽且极具权威，被誉为TCP/IP领域的不朽名著。

本书是《TCP/IP详解》的第1卷，主要讲述TCP/IP协议，结合大量实例讲述TCP/IP协议族的定义原因，以及在各种不同的操作系统中的应用及工作方式。第2版在保留Stevens卓越的知识体系和写作风格的基础上，新加入的作者Kevin R. Fall结合其作为TCP/IP协议研究领域领导者的尖端经验来更新本书，反映了最新的协议和最佳的实践方法。首先，他介绍了TCP/IP的核心目标和体系结构概念，展示了它们如何能连接不同的网络和支持多个服务同时运行。接着，他详细解释了IPv4和IPv6网络中的互联网地址。然后，他采用自底向上的方式来介绍TCP/IP的结构和功能：从链路层协议（如Ethernet和Wi-Fi），经网络层、传输层到应用层。

书中依次全面介绍了ARP、DHCP、NAT、防火墙、ICMPv4/ICMPv6、广播、多播、UDP、DNS等，并详细介绍了可靠传输和TCP，包括连接管理、超时、重传、交互式数据流和拥塞控制。此外，还介绍了安全和加密的基础知识，阐述了当前用于保护安全和隐私的重要协议，包括EAP、IPsec、TLS、DNSSEC和DKIM。

本书适合任何希望理解TCP/IP协议如何实现的人阅读，更是TCP/IP领域研究人员和开发人员的权威参考书。无论你是初学者还是功底深厚的网络领域高手，本书都是案头必备，将帮助你更深入和直观地理解整个协议族，构建更好的应用和运行更可靠、更高效的网络。

本书特色：



W. Richard Stevens传奇般的TCP/IP指南，现在被顶级网络专家Kevin R. Fall更新，反映了新一代的基于TCP/IP的网络技术。



展示每种协议的实际工作原理，并解释其来龙去脉。



新增加的内容包括RPC、访问控制、身份认证、隐私保护、NFS、SMB/CIFS、DHCP、NAT、防火墙、电子邮件、Web、Web服务、无线、无线安全等。