Simplify the following text for a Grade 10 native English-speaking person.
Original: They are sometimes called `` transparent '' proxy servers , because the user does not know a proxy server is between the client and remote server .
Simplified: A suffix proxy server allows a user to access web content by appending the name of the proxy server to the URL of the requested content ( e.g. `` en.wikipedia.org.example.com '' ) . Suffix proxy servers are easier to use than regular proxy servers .