Hiding Software Versions - A Step Forward to a Secure Server

LinuxSecurity.com: Most of you may not notice, or may not care, about the software versions that get revealed by the running services on your server. By default almost all services reveal some information to the clients that use them. Among this information is the version of the software that is being run. It has always been best practice, not to reveal more than it is needed. Why reveal the version of the service when nobody needs to know it? By letting these details be seen, you don't get anything else, but an extra chance for crackers to break into your server. Have you though about hiding your version of services to attackers? This article looks at four services VSFTPD, PHP, Apache, and Postfix and simples ways of hiding there version numbers.

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