The first full-length book on the provocative subject of e-mail privacy, E-Mail Security takes a hard look at issues of privacy in e-mail, rates the security of the most popular e-mail programs, and offers practical solutions in the form of today's two leading-edge encryption programs, PEM and PGP.

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.

Email Security with Cisco IronPort thoroughly illuminates the security and performance challenges associated with today’s messaging environments and shows you how to systematically anticipate and respond to them using Cisco’s IronPort Email Security Appliance (ESA). Going far beyond any IronPort user guide, leading Cisco expert Chris Porter shows you how to use IronPort to construct a robust, secure, high-performance email architecture that can resist future attacks. Email Security with Cisco IronPortpresents specific, proven architecture recommendations for deploying IronPort ESAs in diverse environments to optimize reliability and automatically handle failure. The author offers specific recipes for solving a wide range of messaging security problems, and he demonstrates how to use both basic and advanced features-–including several hidden and undocumented commands. The author addresses issues ranging from directory integration to performance monitoring and optimization, and he offers powerful insights into often-ignored email security issues, such as preventing “bounce blowback.” Throughout, he illustrates his solutions with detailed examples demonstrating how to control ESA configuration through each available interface. Chris Porter,Technical Solutions Architect at Cisco, focuses on the technical aspects of Cisco IronPort customer engagements. He has more than 12 years of experience in applications, computing, and security in finance, government, Fortune® 1000, entertainment, and higher education markets. ·Understand how the Cisco IronPort ESA addresses the key challenges of email security ·Select the best network deployment model for your environment, and walk through successful installation and configuration ·Configure and optimize Cisco IronPort ESA’s powerful security, message, and content filtering ·Understand the email pipeline so you can take full advantage of it–and troubleshoot problems if they occur ·Efficiently control Cisco IronPort ESA through its Web User Interface (WUI) and command-line interface (CLI) ·Implement reporting, monitoring, logging, and file management ·Integrate Cisco IronPort ESA and your mail policies with LDAP directories such as Microsoft Active Directory ·Automate and simplify email security administration ·Deploy multiple Cisco IronPort ESAs and advanced network configurations ·Prepare for emerging shifts in enterprise email usage and new security challenges This security book is part of the Cisco Press® Networking Technology Series. Security titles from Cisco Press help networking professionals secure critical data and resources, prevent and mitigate network attacks, and build end-to-end self-defending networks.

Essential Computer Security provides the vast home user and small office computer market with the information they must know in order to understand the risks of computing on the Internet and what they can do to protect themselves.Tony Bradley is the Guide for the About.com site for Internet Network Security. In his role managing the content for a site that has over 600,000 page views per month and a weekly newsletter with 25,000 subscribers, Tony has learned how to talk to people, everyday people, about computer security. Intended for the security illiterate, Essential Computer Security is a source of jargon-less advice everyone needs to operate their computer securely.* Written in easy to understand non-technical language that novices can comprehend* Provides detailed coverage of the essential security subjects that everyone needs to know * Covers just enough information to educate without being overwhelming

Make your organisation's email secure Your business relies on e-mail for its everyday dealings with partners, suppliers and customers. While e-mail is an invaluable form of communication, it also represents a potential threat to your information security. E-mail could become the means for criminals to install a virus or malicious software on your computer system and fraudsters will try to use e-mails to obtain sensitive information through phishing scams. Safeguard email security If you want to safeguard your company's ability to function, it is essential to have an effective e-mail security policy in place, and to ensure your staff understand the risks associated with e-mail. Email security best practice This pocket guide will help businesses to address the most important issues. Its comprehensive approach covers both the technical and the managerial aspects of the subject, offering valuable insights for IT professionals, managers and executives, as well as for individual users of e-mail. Overcome email security threats The pocket guide covers the various types of threat to which e-mail may expose your organisation, and offers advice on how to counter social engineering by raising staff awareness. Choose the most secure email client The client is the computer programme that manages the user's e-mail. Malicious e-mails often operate through attachment files that infect computer systems with malware when downloaded. This pocket guide explains how you can enhance your information security by configuring the e-mail client to block attachments or to limit their size. Protect your company's information What kind of information should you include in an e-mail? How do you know that the e-mail will not be intercepted by a third party after you have sent it? This guide looks at countermeasures you can take to ensure that your e-mails only reach the intended recipient, and how to preserve confidentiality through the use of encryption. Protect your company's reputation ; Crude jokes, obscene language or sexist remarks will have an adverse effect on your organisation's reputation when they are found in e-mails sent out by your employees from their work account. This pocket guide offers advice on how to create an acceptable use policy to ensure that employee use of e-mail in the workplace does not end up embarrassing your organisation. The pocket guide provides a concise reference to the main security issues affecting those that deploy and use e-mail to s...

It's your job to make email safe. Where do you start? In today's national and global enterprises where business is conducted across time zones and continents, the "e" in email could stand for "essential." Even more critical is rock-solid email security. If you're the person charged with implementing that email security strategy, this book is for you. Backed with case studies, it offers the nuts-and-bolts information you need to understand your options, select products that meet your needs, and lock down your company's electronic communication systems. Review how email operates and where vulnerabilities lie Learn the basics of cryptography and how to use it against invaders Understand PKI (public key infrastructure), who should be trusted to perform specific tasks, how PKI architecture works, and how certificates function Identify ways to protect your passwords, message headers, and commands, as well as the content of your email messages Look at the different types of devices (or "tokens") that can be used to store and protect private keys

The bestselling guide to CISSP certification – now fully updated for the latest exam! There are currently over 75,000 CISSP certified people out there and thousands take this exam each year. The topics covered in the exam include: network security, security management, systems development, cryptography, disaster recovery, law, and physical security. CISSP For Dummies, 3rd Edition is the bestselling guide that covers the CISSP exam and helps prepare those wanting to take this security exam. The 3rd Edition features 200 additional pages of new content to provide thorough coverage and reflect changes to the exam. Written by security experts and well-known Dummies authors, Peter Gregory and Larry Miller, this book is the perfect, no-nonsense guide to the CISSP certification, offering test-taking tips, resources, and self-assessment tools. Fully updated with 200 pages of new content for more thorough coverage and to reflect all exam changes Security experts Peter Gregory and Larry Miller bring practical real-world security expertise CD-ROM includes hundreds of randomly generated test questions for readers to practice taking the test with both timed and untimed versions CISSP For Dummies, 3rd Edition can lead you down the rough road to certification success! Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.