I put this in my httpd.conf and it worked for me:
Alias /myadmin /home/e-smith/files/ibays/Primary/myadmin
<Directory "/home/e-smith/files/ibays/Primary/myadmin">
Options Indexes MultiViews
AllowOverride none
order deny,allow
deny from all
allow from 192.168.1.0/255.255.255.0 put.your.IP.here/255.255.255.252
AddType application/x-httpd-php .php
</Directory>
I wanted it to be available from inside the LAN and from home only, and it was (my ISP gives me a 252 subnet).
You could also put it in a secured ibay, couldn't you?