I thought this article was important enough to highlight:
If you're running an anonymously accessible MOSS website, especially an internet-facing one, you may have noticed that your SharePoint Forms pages are also accessible to anonymous users. For example, if you're using the publishing features, anonymous users might be able to get to http://SERVER/Pages/Forms/AllItems.aspx. Typically you don't want this, so how do you prevent anonymous users from accessing these pages? In order to help with this, we provide a Feature out of the box called the ViewFormsPagesLockdown Feature, which we usually just call the Lockdown feature for simplicity. If you're experiencing this problem and want to lock anonymous users out of your Forms pages, then you can execute the following stsadm command on your farm: stsadm.exe –o activatefeature –url <site collection url> -filename ViewFormPagesLockdown\feature.xml
If you're running an anonymously accessible MOSS website, especially an internet-facing one, you may have noticed that your SharePoint Forms pages are also accessible to anonymous users. For example, if you're using the publishing features, anonymous users might be able to get to http://SERVER/Pages/Forms/AllItems.aspx. Typically you don't want this, so how do you prevent anonymous users from accessing these pages?
In order to help with this, we provide a Feature out of the box called the ViewFormsPagesLockdown Feature, which we usually just call the Lockdown feature for simplicity. If you're experiencing this problem and want to lock anonymous users out of your Forms pages, then you can execute the following stsadm command on your farm:
stsadm.exe –o activatefeature –url <site collection url> -filename ViewFormPagesLockdown\feature.xml
From the ECM team blog : Anonymous Users, Forms Pages, and the Lockdown Feature
This post is cross posted on Alistair's WSS 3.0 powered blog and his MSDN blog.