In order to secure your videos from unauthorized access, please open file web/.htaccess within your VIMP installation and go to the "Payment Rules". Replace the complete string "@IP.ADD.RE.SS@" with the IP address of your server and enable the rules by removing the "#" of all lines of the rule.
At the end, the basic structure should look as follows:
<IfModule mod_fcgid.c>
.
.
.
.
RewriteCond %{REMOTE_ADDR} !<span style="color: #ff0000;">123.123.123.123</span>
.
</IfModule>
<IfModule mod_php5.c>
.
.
.
RewriteCond %{REMOTE_ADDR} !<span style="color: #ff0000;">123.123.123.123</span>
.
</IfModule>
Note: The above .htaccess rules are only required for VIMP versions up to 3.2. Later versions check the authorization directly via the output controller.