ISAserver.org Articles & Tutorials Archive

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Articles & Tutorials for December, 2004

ISA/SBS Series: Controlling Internet Access: Denying Access to Certain Websites During Business Hours: Date - Dec 30, 2004; Author - Amy Babinchak; Section - Articles; ISA has some great tools for controlling Internet access. Schedules let you decide when users can access the Internet. Destination Sets let you control where users can go on the Internet. Site and Content Rules are where you set the rules that apply to the destination sets that you’ve configured. A good Internet Access Policy will often use all three elements. This article shows you how.
Configuring the ISA Firewall as an Outbound Filtering SMTP Relay: Date - Dec 26, 2004; Author - Thomas Shinder; Section - Articles; In my article Configuring the ISA Firewall as an Inbound Filtering SMTP Relay, I discussed procedures you can use to make the ISA firewall (ISA Server 2004) an inbound filtering SMTP relay to help offload some processing from your dedicated spam filtering solution. The ISA firewall’s built-in SMTP Message Screener, while not a complete anti-spam and e-mail anti-virus solution, can go a long way at improving the performance of your current e-mail hygiene solution by performing basic keyword and attachment filtering duties. We will build on the configuration established in the last article, which you can find at http://isaserver.org/articles/2004inboundsmtprelay.html and show how to configure the ISA firewall as an outbound filtering SMTP relay.
Happy Holidays from ISAserver.org!: Date - Dec 23, 2004; Author - The Editor; Section - Site News; The ISAserver.org team would like to extend the warmest holiday wishes to all of our esteemed members and guests. Through your loyal support we continue to be regarded as the world's leading free online ISA server resource. Now, as we approach the end of the year, we have our sights set on expanding and improving our service even further over the course of 2005 so we hope to see you all again after the festivities are over. Thanks to all of you!
Configuring the ISA Firewall as an Inbound Filtering SMTP Relay: Date - Dec 21, 2004; Author - Thomas Shinder; Section - Articles; A popular configuration for the ISA firewall is to use it as an inbound SMTP filtering relay. You can setup the ISA firewall as an inbound SMTP relay and leverage the built-in SMTP filter and SMTP Message Screener to offload some of the spam and attachment filtering duties from your dedicated spam whacking device or Exchange Server located on an ISA firewall Protected Network. While the ISA firewall’s SMTP Message Screener isn’t a full-fledged spam whacking and e-mail anti-virus solution, it can perform some initial processing on incoming messages, which takes some heat off your dedicated e-mail scrubbing devices. This article shows you how to make it happen.
Sneak preview - Configuring ISA Server 2004: Chapter 2 on ISAserver.org!: Date - Dec 16, 2004; Author - Thomas Shinder; Section - Articles; Whet your appetite for Dr. Tom and Deb Shinder's latest book - Configuring ISA Server 2004. This book provides you with unparalleled information on installing, configuring, and troubleshooting ISA Server 2004 and is destined to be as popular and as essential as their bestselling ISA Server and Beyond. What's covered in this chapter: The New GUI: More Than Just a Pretty Interface, Teaching Old Features New Tricks, New Features on the Block and Missing in Action: Gone, but Not Forgotten. The book is available now!
Troubleshooting SMTP Server Publishing Rules: Date - Dec 13, 2004; Author - Thomas Shinder; Section - Articles; One of the most common Server Publishing Rule scenarios is for SMTP servers. SMTP Server Publishing Rules allow you to publish SMTP servers on an ISA firewall Protect Network. The SMTP server can be a dedicated SMTP relay, or it can be the endpoint of the inbound e-mail messages, such as you Exchange Server. The SMTP Server Publishing Rule allows inbound connections to TCP port 25 through the ISA firewall to the SMTP server on the ISA firewall Protected Network. SA firewall SMTP server publishing is popular, but along with its popularity comes a lot of troubleshooting issues. In this article we’ll take a look at one approach to troubleshooting SMTP Server Publishing Rules.
Creating and Configuring ISA Firewall Networks (2004) [v1.02]: Date - Dec 07, 2004; Author - Thomas Shinder; Section - Articles; If you've managed an ISA 2000 firewall, the networking model used in the new ISA firewall (ISA Server 2004) will likely send you for a loop. That's expected, as the new ISA firewall's networking model is completely new and improved. No longer do you have to deal with the LAT, and all connections made through the ISA firewall are exposed to the ISA firewall's stateful packet inspection (SPI) and stateful application layer inspection engines. Check out this article for details on getting started right.