Ok, first confirm that you have a LoadModule
that looks similar to this:
LoadModule status_module modules/mod_status.so
If that isn't there, then you'll need to download and add it.
If it is there then try this:
<Location /server-status>
SetHandler server-status
Order allow,deny
Allow from all
</Location>
See if you can then hit http://www.my-domain.com/server-status
If you can then switch it to:
<Location /server-status>
SetHandler server-status
Order allow,deny
Deny from all
Allow from 192.168.1.100
</Location>
Where 192.168.1.100
is your internal IP if accessing internally or your external IP. This will restrict it so not just anyone can access it. You can then add multiple Allow from
for each IP / IP range that requires access.