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Email Security with Cisco IronPort (Networking Technology: Security)

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The Cisco IronPort Email Security Appliances (ESA) have been deployed in thousands of networks to accept, filter, and deliver email messages. The ESA is easy to deploy and its security-filtering settings are effective right out of the box. However, many organizations are looking for more from their messaging environment and have barely tapped the potential of the ESA product line.

Email on the Internet is powered by the Simple Mail Transfer Protocol (SMTP). The simplicity of the protocol is its strength and weakness. Lack of authentication and the notion that one should accept all messages, gracefully, means that it is the most abused protocol on the Internet today. Spam is the most obvious form of abuse, but other dangers lurk, like bounce storms that can force servers offline in a denial of service (DoS) attack. Many organizations struggle with having email messages rejected or dropped by overzealous filtering.

The requirements laid on SMTP have changed over the years: Most businesses consider email to be their most important communication medium, ranking above telephone. Spam volumes have increased and changed form, and legitimate message traffic is growing in size and complexity as HTML has come to be the dominant format and the use of attachments has become widespread. New standards, such as SPF and DKIM, promise to bring proper authentication to email messages.

This book introduces the challenges facing messaging environments today and offers effective solutions on the ESA. It provides a series of recipes for solving particular messaging problems, delves into obscure features, makes recommendations on improving security, and shines light on oft-ignored issues like bounce blowback. Architecture recommendations are provided for deploying multiple ESAs in a variety of organizations, with the goal of improving reliability and automatically handling failure scenarios.

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Co-design Approaches to Dependable Networked Control Systems (ISTE)
Co-design Approaches to Dependable Networked Control Systems (ISTE)

This book describes co-design approaches, and establishes the links between the QoC (Quality of Control) and QoS (Quality of Service) of the network and computing resources. The methods and tools described in this book take into account, at design level, various parameters and properties that must be satisfied by systems controlled through a...

Robin Williams Cool Mac Apps, Second Edition : A guide to iLife 05, .Mac, and more (2nd Edition)
Robin Williams Cool Mac Apps, Second Edition : A guide to iLife 05, .Mac, and more (2nd Edition)
Robin Williams Cool Mac Apps: A Guide to iLife 05, .Mac, and More is a companion volume to Robin Williams Mac OS X Book, Tiger Edition. Together they continue the tradition of Robin's classic guide to the Mac OS, ...
Designing Online Learning with Flash
Designing Online Learning with Flash
There is a need for a book that provides a model of learning that is appropriate for online learning as well as teaches the user how to create potent Flash applications to deliver online learning content. This book is an Adobe Flash tutorial set in an instructional design context. It demonstrates how to develop Flash tutorials for teaching...

Pro Active Record: Databases with Ruby and Rails
Pro Active Record: Databases with Ruby and Rails
Pro Active Record helps you take advantage of the full power of your database engine from within your Ruby programs and Rails applications. ActiveRecord, part of the magic that makes the Rails framework so powerful and easy to use, is the model element of Rail's model/view/controller framework. It's an object-relational mapping library...
Quicken 2009 The Official Guide (Quicken Press)
Quicken 2009 The Official Guide (Quicken Press)
The Only Official Guide to the #1 Personal Finance Software

Now you can manage your finances and assets with ease! Quicken 2009: The Official Guide is filled with insider tips and expert techniques for tracking your income, expenses, savings, transactions, investments, and much more.

Fully endorsed by Intuit,...

Mastering ExtJS - Second Edition
Mastering ExtJS - Second Edition

Learn how to develop advanced and efficient Internet applications with Ext JS

About This Book

  • Build a complete application with Ext JS from scratch to the production build
  • Excellent tips and tricks to make your web applications stand out
  • Written in an engaging and...
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