About Apache error pages that cause version display settings

Before visiting a lot of websites on the Internet, when visiting a website has a problem and cannot open, often will report the following diagram error.

Obviously exposes the Apache version and the server's operating system type, which is no doubt unsafe.

Don't worry. You can set the signature display for this page in the Apache configuration file:

Where the Serversinnature configuration entry has three parameters:

On the default option, the following error message appears when accessing a nonexistent item:

Off closes the server signature. The following error message appears when accessing a nonexistent project (does not display the Apache version and operating system type)