The header that came back included the following: Server: Apache/1.3.3 Cobalt (Unix) (Red Hat/Linux) What I had expected was: Server: Apache What am I doing wrong?
Nothing, the Apache directives: ServerTokens ProductOnly and ServerTokens Minimalwill only return "Apache" on Apache versions 1.3.14 and later. Earlier versions of Apache will return what you're seeing - but will still strip out all the other stuff regarding the build versions of SSL, PHP, etc.