Stop RPS from asking for <mac>.cfg and common cfg

[jolouis]

If you're really worried you can also go a step further and add username/password to the URL provided by RPS. Then put username/password protection on your script to ensure that only requests who provide the valid login are even allowed to try. That way even if somebody spoofed a valid MAC unless they were actually sniffing a live request they wouldn't know how to login to your script... and as you said, if they did all that they would still end up with an encrypted config file.