3 configuration changes needed to enable anonymous access for a public-facing MOSS site

1. IIS - Grant Read rights to the Internet Guest Account (that is used in inetmgr anonymous access settings) for the site’s physical folder under inetpub

2. Central Admin – Navigate to Application Management -> Authentication Providers. Edit the “Default” zone and select “Enable Anonymous Access”

3. Site Collection – Navigate to Site Actions -> Site Settings -> Advanced Permissions. Navigate to Settings -> Anonymous Access. Select “Entire Web site”.