Open Source E-mail Security

Richard Blum

Open Source E-mail Security
  • 出版商: SAMS
  • 出版日期: 2001-10-10
  • 定價: $1,398
  • 售價: 8.0 折 $1,118
  • 語言: 英文
  • 頁數: 496
  • 裝訂: Paperback
  • ISBN: 0672322374
  • ISBN-13: 9780672322372
  • 相關分類: 資訊安全

    • 立即出貨(限量) (庫存=9)

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商品描述

In this book you'll learn the technology underlying secure e-mail systems, from the protocols involved to the open source software packages used to implement e-mail security. This book explains the secure MIME (S/MIME) protocol and how it is used to protect data transmitted across the Internet. It also explains the concepts crucial to stopping spam messages using the three most popular open source mail packages--sendmail, qmail, and postfix. It presents detailed configurations showing how to avoid accepting messages from known open relays and how to filter known spam messages. Advanced security topics are also covered, such as how to install and implement virus scanning software on the mail server, how to use SMTP authentication software, and how to use the SSL protocol to secure POP, IMAP, and WebMail servers.

Table of Contents

Introduction.

I. E-MAIL PRINCIPLES.

1. E-mail Basics.

Unix E-mail Systems. E-mail Protocols. E-mail Security. Summary.


2. SMTP.

SMTP Description. Extended SMTP. Message Formats. Summary.


3. POP3.

Description of the Post Office Protocol. POP3 Authentication Methods. POP3 Client Commands. Open Source POP3 Implementations. Summary.


4. IMAP.

Description of the Interactive Message Access Protocol. IMAP Authentication Methods. IMAP Client Protocol. Open Source IMAP Implementations. Summary.


5. MIME.

The Uuencode Program. MIME and Binary Data. S/MIME. Open Source MIME Packages. MIME with PGP. Summary.


6. Reading E-mail Headers.

Decoding Forged E-mail Headers. Using DNS Programs to Track E-mail Hosts. Using External Spam Services. Summary.

II. SERVER SECURITY.


7. Securing the UNIX Server.

Monitoring Log Files. Preventing Network Attacks. Blocking Network Access to the Server. Detecting Break-ins. Summary.


8. The sendmail E-mail Package.

What Is sendmail? Configuring sendmail. Using the m4 Preprocessor. The sendmail Command Line. Installing sendmail. Securing sendmail. Summary.


9. The qmail E-mail Package.

What Is qmail? Control Files. Downloading and Compiling the qmail Source Code. Configuring qmail. Using the qmail sendmail Wrapper. Receiving SMTP Messages. qmail and Security. Summary.


10. The Postfix E-mail Package.

What Is Postfix? Downloading and Compiling Postfix. Configuring Postfix. Starting Postfix. Postfix and Security. Summary.


11. Preventing Open Relays.

Open and Selective Relaying. Configuring Selective Relaying. Avoiding Open Relays. Summary.


12. Blocking Spam.

Methods Used to Block Spam. Implementing Spam Blocking. Summary.


13. Filtering Viruses.

Methods Used to Block Viruses. Implementing Virus Filtering. Implementing Virus Scanning. Summary.

III. E-MAIL SERVICE SECURITY.


14. Using E-mail Firewalls.

The SMTP VRFY and EXPN Commands. Disabling the VRFY and EXPN Commands. Using an E-mail Firewall. Creating an E-mail Firewall. Summary.


15. Using SASL.

What Is SASL? The Cyrus-SASL Library. Implementing SASL. Testing the SASL Server. Summary.


16. Secure POP3 and IMAP Servers.

The SSL Family of Protocols. The OpenSSL Package. Using UW IMAP with SSL. Summary.


17. Secure Webmail Servers.

What Is Webmail? The TWIG Webmail Server. The MySQL Database. The Apache Web Server with PHP Support. Installing the TWIG Webmail Server. Summary.

商品描述(中文翻譯)

在這本書中，您將學習安全電子郵件系統的技術，從涉及的協議到用於實現電子郵件安全的開源軟件包。本書解釋了安全多用途互聯網郵件擴展（S/MIME）協議以及它如何用於保護在互聯網上傳輸的數據。它還解釋了阻止垃圾郵件的關鍵概念，使用三個最受歡迎的開源郵件軟件包（sendmail、qmail和postfix）。它提供了詳細的配置，顯示如何避免接受來自已知開放中繼的郵件以及如何過濾已知的垃圾郵件。還涵蓋了高級安全主題，例如如何在郵件服務器上安裝和實施病毒掃描軟件，如何使用SMTP身份驗證軟件，以及如何使用SSL協議保護POP、IMAP和WebMail服務器。

目錄：
引言
第一部分：電子郵件原理
1. 電子郵件基礎
2. SMTP
3. POP3
4. IMAP
5. MIME
6. 閱讀電子郵件標頭

第二部分：服務器安全
7. 保護UNIX服務器
8. sendmail郵件軟件包
9. qmail郵件軟件包
10. Postfix郵件軟件包
11. 防止開放中繼
12. 阻止垃圾郵件
13. 過濾病毒

第三部分：郵件服務安全
14. 使用郵件防火牆
15. 使用SASL

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