This got me to thinking how I could provide short, procedure specific articles on commonly asked questions. What we need is something that provides instructions on very specific procedures to experienced ISA firewall admins who just need a pointer in the right direction. My solution is the new ISA Firewall Quick Tip series. ISA firewall quick tip articles won’t be the comprehensive conceptual and step by step coverage providing stem to stern guidance. Instead, they’ll be limited to between 500-1500 words and will cover the solution to a very specific question without providing background and context to the configuration.

We’ll inaugurate the ISA Firewall Quick Tip Series with an answer to the question “How do I limit what computers can connect to my published RDP servers”. The answer is by changing a setting in the RDP Server Publishing Rule dialog box after you’ve completed configuration of the rule.

Perform the following steps to create the RDP Server Publishing Rule:

1. In the ISA firewall console, expand the server name and click the Firewall Policy node. Click the Tasks tab in the Task Pane and click the Create New Server Publishing Rule link.
2. On the Welcome to the New Server Publishing Rule Wizard page, enter a name for the rule in the Server Publishing Rule name text box. In this example we’ll name the rule RDP Server and click Next.
3. On the Select Server page, enter the IP address of the RDP server in the Server IP address text box. In this example the IP address is 10.0.0.2. Click Next.