[This is pre-release documentation and subject to change in future releases. This topic's current status is: Milestone-Ready]

Topic Last Modified: 2010-04-30

By using the instant messaging filter, Microsoft Communications Server 2010 provides a global URL filter that blocks specific URLs contained in instant messaging (IM) conversations among users throughout your Communications Server 2010 deployment. By using Communications Server Control Panel, you can do the following:

In addition, you can choose to block URLs that contain specific file types, or block only Internet URLs by allowing URLs that are within the server’s local intranet zone — intranet URLs — to pass through the server. For details about URL filtering, see Configuring Instant Message (IM) Filtering.

To modify the global URL filter

  1. Open Communications Server Control Panel.

  2. In the left navigation bar, click IM and Presence, and then click the URL Filter tab.

  3. On the URL Filter page, double-click the Global filter.

  4. In the Edit URL Filter dialog box, click the Enable URL Filter check box to enable URL filtering across the Communications Server 2010 deployment.

  5. To block any active URL that contains a file with an extension listed under File type extensions to block in the Edit File Filter dialog box, click Block URLs with file extension.

  6. In the Hyperlink prefix drop-down list box, click the option that corresponds to how you want to handle URLs in instant message conversations.

  7. When you are done, click Commit to save your changes.

To configure your intranet settings in Internet Explorer

If you are using the Windows Internet Explorer browser on the server, use the following procedure to configure how the server defines its local intranet zone.

  1. On the server, open a command window and use the runas command to run Internet Explorer under the NT Authority\Network Service built-in service account.

    You must use the NT Authority\Network Service account because the instant message filter runs under this account.
  2. On the Tools menu, click Internet Options.

  3. On the Security tab, click Local intranet, and then click Sites.

  4. In the Local intranet dialog box, select or clear the check boxes, as appropriate.

  5. Click OK, and then click OK again.

See Also