Is it possible to get a list of files under a directory of a website? How?

Question

Say I have a website www.abc.com. Under the website directory there is a page secret.html. It can be accessed directly like www.abc.com/secret.html, but there are no pages that

Answer 1

There are only two ways to find a web page: through a link or by listing the directory.

Usually, web servers disable directory listing, so if there is really no link to the page, then it cannot be found.

BUT: information about the page may get out in ways you don't expect. For example, if a user with Google Toolbar visits your page, then Google may know about the page, and it can appear in its index. That will be a link to your page.