How do I? – Ensure IIS 6 has Integrated Security turned on for Anonymous access to my SharePoint site

1. Start IIS Manager.
2. Expand “Web Sites” until the web app of your site is visible.
3. Right click the web app and select “Properties” on the dropdown menu.
4. Select the “Directory Security” tab.
5. Under the “Authentication and access control” section, click the “Edit” button.
6. Check the “Enable anonymous access” check box is checked.
7. Check the “Integrated Windows authentication” check box.
8. Ensure all other check boxes are unchecked.
9. Click “OK” twice.

That should be it.  You may need to restart IIS if caching is delivering the same results as before the change.

Cheers
C