Step-by-Step Guide

Step 5: Creating a DNS publishing rule

It's time to create the second publishing rule. You may or may not need this one, depending on how your DNS server is configured.

If your ISP is hosting your external DNS, or if your external DNS server is located within a DMZ on your network, you don't need this rule.

If your external DNS server is located somewhere on your network, you need a DNS publishing rule.

  1. To create this rule, right click on the Firewall Policy container and select New -> Server Publishing Rule. Windows will launch the Server Publishing Rule Wizard.

  2. Begin by entering a name for the rule. In this case, just call the rule 'DNS.'

  3. Click Next. You will be prompted to enter the IP address of the server that you are publishing. Enter the DNS Server's IP address and then click Next.

  4. You will now be prompted to select a protocol. Select DNS server from the list of protocols and click Next again.

  5. On the IP Addresses screen, select the External checkbox and click Next, followed by Finish.

  6. You should be back at the main ISA Server console. Select the new rule and click Apply, followed by OK.


Step-by-Step Guide: How to use ISA Server as an SMTP filter

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Introduction
 Step 1: Installing the SMTP service
 Step 2: Configuring Internet Information Server
 Step 3: Installing ISA Server 2004
 Step 4: Creating an SMTP publishing rule
 Step 5: Creating a DNS publishing rule
 Step 6: Configuring the message screener
 Step 7: Changing your DNS server's MX record

ABOUT THE AUTHOR:   
Brien M. Posey, MCSE
Brien is a Microsoft Most Valuable Professional for his work with Windows 2000 Server and IIS. He has served as CIO for a nationwide chain of hospitals and was once in charge of IT security for Fort Knox. As a freelance technical writer, he has written for Microsoft, TechTarget, CNET, ZDNet, MSD2D, Relevant Technologies and other technology companies.

This was first published in August 2005

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