Bug#843014: Apache2: ServerTokens Minimal
tags 843014 wontfix
On Thursday, 3 November 2016 07:42:39 CET Heinrich Schuchardt wrote:
> This results in a header like:
> Server: Apache/2.4.10 (Debian)
> Sending the Apache and OS version is a waste of bandwidth.
> Unfortunately Apache does not allow to completely suppress this
> superfluous header.
> Furthermore the current setting exposes valuable information to a
> possible intruder:
> Why should any HTTP client care which OS my server is using?
There are services that create statistics of the whole internet based on the
Server header. Including Debian there gives an idea how much servers run
Debian compared to other OSs, and which release of Debian. Therefore I prefer
not to change the default. I don't think the bandwith waste is relevant in
most setups. On systems where it is, the admin can change the setting, of
While it is true that knowing the OS may give a potential advantage to an
attacker, it is usually also possible to infer this information from other
properties of the default configuration. If your security depends on the OS
being secret, you have bigger problems.