Many Linux distributions including Debian ship Apache 2.4 as the standard Apache web server. The example configuration in conf/http-jk.conf still uses the old and deprecated authentication configuration directives Order, Allow or Deny. These do not integrate well with the new authorization scheme of Apache 2.4. The configuration directives should be replaced with a suitable combination of <RequireAll>, <RequireAny>, Require all, Require local, Require ip, and Require method.
Patches are always welcome, especially documentation patches. Please note that there are plenty of users still using Apache 2.0, and so configuration samples that will still work there will be appreciated.
Fixed in 1.2.x for 1.2.44 onwards.