You can restrict access to the proxy server based on the type and version of the client’s web browser. Restriction occurs based on the user-agent header that all web browsers send to servers when making requests.
Access the Server Manager, and click the Filters tab.
Click the Set User-Agent Restriction link.
The Set User-Agent Restriction page is displayed.
Select the resource from the drop-down list or type a regular expression that matches the user-agent string for the browsers you want the Proxy Server to support.
If you want to specify more than one client, enclose the regular expression in parentheses and use the | character to separate the multiple entries. For more information on regular expressions, see “Understanding Regular Expressions” in Chapter 16, Managing Templates and Resources.
Check the Allow Only User-Agents Matching option.
Click OK.
Click Restart Required.
The Apply Changes page is displayed.
Click the Restart Proxy Server button to apply the changes.