DD-WRT - Creating a secure and separate VLAN network

HD Video: http://www.multiupload.com/82ACH5YYSC

I created a VLAN becouse of security reasons and i dont wont my other device talking to my PC.

Command in the video, copy and paste it into Commands under Administration
iptables -A FORWARD -i br0 -o ! vlan2 -j DROP

Methord 2:
http://www.dd-wrt.com/wiki/index.php/VLAN_Support