Apache by default puts a “signature” at the end of error pages and directory listings…here is an example of what this looks like:
Apache/2.2.6 (Unix) mod_ssl/2.2.6 OpenSSL/0.9.7a DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 PHP/5.2.5 Server at missysadmin.com Port 80
Now, some people may not want to broadcast what type of server they are running or what’s on it, for reasons of security. You can easily disable this in your httpd.conf file:
ServerSignature Off
service httpd restart