ISAserver.org Articles & Tutorials Archive

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Articles & Tutorials for July, 2004

Using Outlook 2003 with the Firewall Client: Date - Jul 25, 2004; Author - Thomas Shinder; Section - Articles; I’ve noticed a recent burst of posts from ISA 2004 firewall administrators stating that they can’t get Outlook 2003 to work through the ISA firewall. With further questioning, I’ve discovered that these ISA firewall administrators are using the Firewall client. It’s great to hear they’ve had the good judgment to use the Firewall client! The Firewall client gives them strong user/group based access control for outbound connections for all Winsock TCP and UDP protocols. The Firewall client is one of the key pieces of the ISA firewall that enables it to provide a high level of security that your typical hardware firewall could never provide. This article solves the problem and explains away the Outlook/Firewall client misconceptions.
Step-by-Step: Publishing a Single Exchange 2003 OWA with ISA 2004 Firewall Forms Based Authentication: Date - Jul 24, 2004; Author - Liran Zamir; Section - Tutorials / Configuration - General; I decided to take the DIY approach for setting ISA firewall to securely publish Exchange 2003 Outlook Web Access using forms-based authentication and SSL bridging to provide a higher level of security in web mail access. I believe this step-by-step article will take out some of the guess work that I went through when checking the configuration.
Preventing P2P and Instant Messaging programs from hijacking your network with ISA 2004 Firewalls: Date - Jul 23, 2004; Author - Greg Mulholland; Section - Articles; Network and Firewall Administrators have been facing a battle to uphold the integrity and productivity of their networks. Some of the major issues they have found with these potentially dangerous applications (P2P, IM’s) are the potential to disclose corporate information (source code etc) in a non mediated forum, the misuse of company resources, legal issues, possible virus incursion and simply the fact that it is another (flavor of the month) type point of attack, potentially jeopardizing the entire network. This article will describe how in simple terms we can leverage a new feature of ISA Server 2004 to prevent these types of applications clogging our internet pipe and exposing our company/network to the above issues.
The ISA 2004 Firewall ISP Co-location Configuration: Date - Jul 18, 2004; Author - Thomas Shinder; Section - Articles; One of the more unusual configuration options for the ISA firewall is what I call the "ISP co-location" configuration. I wrote about this configuration for the ISA Server 2000 firewall in an article Configuring an ISP Co-located Web/SMTP/ISA Server. I called this an ISP co-location configuration because in an ISP co-lo environment you typically don’t have the option to install a server with multiple interfaces. So, if you want to run your ISP co-located Web, FTP and SMTP server, you need to do it with a single NIC. Check out this article for how to create the single NIC colo config with your ISA 2004 firewall.
ISA Server 2004 Generally Available: Date - Jul 14, 2004; Author - The Editor; Section - Site News; The release this week of Microsoft Internet and Security Acceleration (ISA) Server 2004 marks the availability of an important new solution in the quest for better corporate network security. ISA Server 2004 is an advanced application layer firewall, VPN and Web cache solution that helps enable customers to easily maximize existing IT investments by improving network security and performance.
Using ISA 2004 Firewall Domain Name Sets to Control Internet Access: Date - Jul 09, 2004; Author - Thomas Shinder; Section - Articles; Strong user/group based inbound and outbound access control is one of the key security features seen in true stateful application layer inspection firewalls. Unlike simple stateful filtering firewalls, the stateful application layer inspection firewall can make allow or deny decisions based on application layer information, such as the name of the user or the user's group membership, when evaluating an inbound or outbound request. This article discusses how to use the ISA 2004 firewall's Domain Name Sets feature to control outbound access and block forbidden sites.
Real Time Web Monitoring with GFI's WebMonitor 2 for ISA Firewalls: Date - Jul 07, 2004; Author - Thomas Shinder; Section - Tutorials / Product Reviews; Need a way to view in real time what users are accessing on the Web? How about an easy way to disconnect users who are downloading giant sized files? If so, then you need GFI's WebMonitor 2. This is a *must have* FREEWARE utility for all ISA firewall admins. Check out this article for details on what GFI WebMonitor 2 can do for you.
Blocking the Slammer Virus with ISA 2004 Firewalls (v1.1): Date - Jul 06, 2004; Author - Thomas Shinder; Section - Articles; Use your ISA 2004 firewall to whack the Slammer virus! Check out this article for full step by step details.
Blocking the SoBig Virus with ISA 2004 Firewalls (v1.1): Date - Jul 06, 2004; Author - Thomas Shinder; Section - Articles; Use your ISA 2004 firewall to whack the SoBig virus! Check out this article for full step by step details.
Blocking the MyDoom Virus with ISA 2004 Firewalls: Date - Jul 04, 2004; Author - Thomas Shinder; Section - Articles; Use your ISA 2004 firewall to whack the MyDoom virus! Check out this article for full step by step details and a link to Jim Harrison's *free* script that does it all for you.
Blocking the Bagle Virus with ISA Server 2004 Firewalls: Date - Jul 04, 2004; Author - Thomas Shinder; Section - Articles; Use your ISA 2004 firewall to whack the Bagle virus! Check out this article for full step by step details and a link to Jim Harrison's click-o-matic script that does it all for you.
Using ISA 2004 Firewalls to Block Worm Attacks (v1.2): Date - Jul 02, 2004; Author - Thomas Shinder; Section - Articles; One of the key security features ISA Server 2004 firewalls bring to the plate is their ability to block a wide variety of viruses and worms. The ISA 2004 firewall can block external users from infecting your network and the prevent infected hosts on the corporate network from infecting machines on external networks. This page will be updated on an ongoing basis with links to articles on how to configure your ISA 2004 to block widespread virus and worm attacks.
Using ISA Server 2004 Firewalls to Protect Against Ject: Date - Jul 02, 2004; Author - Thomas Shinder; Section - Articles; Use your ISA 2004 firewall to whack the Ject virus! Check out this article for full step by step details and a link to Jim Harrison's one of a kind, best of breed Block Ject script for ISA firewalls.
Using ISA 2004 Firewalls to Protect Against Sasser (v1.01): Date - Jul 02, 2004; Author - Thomas Shinder; Section - Articles; Use your ISA 2004 firewall to whack the Sasser virus! Check out this article for full step by step details and a link to Jim Harrison's out of this world Block Sasser script for ISA firewalls.