Getting started with Microsoft ISA Server 2006, Part 9: Client Configuration

This entry is part 9 of 12 in the series Getting started with Microsoft ISA Server 2006

Client Configuration

From Part 8: Create Sample Access Rule, you have created an access rule on ISA Server 2006. Now, it is time to configure client computer. There are three types of client that you can choose: SecureNAT, Firewall client and Web Proxy. Each type has a different features, see the table below for the comparison.

On this example, I configure the client computer as firewall client type. But you will see how to configure all types of client.


Client Types

The table below compares the ISA Server clients.

Feature Client typesSecureNAT clientFirewall clientWeb Proxy client
Installation requiredNo, but some network configuration changes may be requiredYesNo, Web browser configuration required
Operating system supportAny operating system that supports Transmission Control Protocol/Internet Protocol (TCP/IP)Only Windows platformsAll platforms, but by way of Web application
Protocol supportApplication filters for multiple connection protocols requiredAll Winsock applicationsHypertext Transfer Protocol (HTTP), Secure HTTP (HTTPS), File Transfer Protocol (FTP), and Gopher
User-level authenticationNoYesYes
Server applicationsNo configuration or installation requiredConfiguration file requiredNot applicable

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SecureNAT client

  1. To configure client as SecureNAT client type, set the default gateway of the network interface card on client to the ISA Server.
    Set Default Gateway
  2. If you are using DHCP, you can configure by add Router scope option to the ISA Server.
    Router Scope Option

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Firewall client

  1. Download Firewall Client for ISA Server from Microsoft.
  2. Install Microsoft Firewall Client on the client computer.
    Setup Microsoft Firewall Client
  3. On ISA Server Computer Selection, select Connect to this ISA Server computer and type the ISA Server host name.
    ISA Server Computer Selection
  4. After the installation completes, you will see the firewall client’s icon on the task bar.
    Firewall Client's Icon
  5. You can view and modify configuration by double-click on the icon and select Settings tab. Also, you can click on Apply Default Settings Now for other users on this computer can use this configuration.
    Settings on Microsoft Firewall Client for ISA Server

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Web Proxy client

  1. Open your web browser. On this example, I use Internet Explorer.
  2. On Menu bar, Click on Tools -> Internet Options.
    Open Internet Options
  3. On Internet Options, Select Connections tab and click on LAN settings.
    Open LAN settings
  4. On Local Area Network (LAN) Settings, check the box Use a proxy server for your LAN and type the ISA Server address and port.
    Configure ISA Server as proxy server

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What’s Next

Now I have done the basic configuration on both ISA Server 2006 and the client computer. Next, it is time to test accessing the Internet from the client through the ISA Server.

Series Navigation<< Getting started with Microsoft ISA Server 2006, Part 8: Create Web Access RuleGetting started with Microsoft ISA Server 2006, Part 10: Logging >>

2 Responses to “Getting started with Microsoft ISA Server 2006, Part 9: Client Configuration”

  1. Mark Lewis


    I’ve only used ISA2000 that came with SBS and didn’t have any problem.

    I’ve just installed sbs2003 and the clients can connect to the internet and internal network fine, but when I’ve added ISA2006 none of the clients can access the server or internet, uninstall isa2006 and they’re fine.

    I assume I’m missing a firewall policy to allow access to the internal network? I’d have thought it would have been already open, but I’m new to this.

    Any advice? SBS2003 with ISA2006 installed 2 nic’s



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