Any web page can have a password. The password protection is enabled and entered right under the page Titles on the editing page of the web page. If a visitor navigates directly to a password-protected page, the system prompts for a password (similar to logging in to a collection from a Client Area Page). Alternatively, a password protected web page can be accessed using the Events and Galleries password box anywhere on your site. This prevents the page needing to be displayed in the navigation menu - which could confuse your site visitor.
Visitors can access password-protected web pages in two ways:
When clicking a direct link, if the password is already present in the URL as "ppwd=[password]", then access will be granted automatically. Otherwise, the visitor will be prompted for a password.
If you wish to publish content for a limited audience, a much better way is to create a free Limited-Access web site. Such sites can contain many pages that are all seamlessly interlinked and have a single secure entry point.
These per-page passwords, on the other hand, require the visitor to continually re-enter the password with each click, and cannot apply to a group of pages. These types of password-protected pages are not intended to secure content. Rather, they exist so you can have things other than collections come up when a visitor enters a particular password into a stand-alone password box on the site.
If you assign the same password to both a web page and an image collection, the web page will take precedence. That is, when the visitor enters the common password in a stand-alone password box, then your web page will come up, masking the collection of the same password. For best results, you should make all your passwords unique to avoid this situation.
If you make a web page use the same password as your master password, then the master password will take precendence in stand-alone password boxes (it causes the system to list all your collections).
When visitors enter a password on a particular page, then will only ever find password-protected web pages in that same site-version. Pages in other sites will not come up. Other pages in other versions (snapshot, live, draft) will also not come up. Within each site-version, any password-protected pages must have different passwords.
You can have duplicate web-page passwords if the web pages appear in other web sites or other versions of the same site. However, since every password-box lookup form is already tied to a particular site-version, and only returns matching web pages from that site-version, these across-version duplicates do not create conflicts.