Hi, mobile network and laptop network are on the same networks? or you have two different network? If you have two netwroks you have to create two rules and two security web profiles.
In one WebFilter profile you have to block you tube access (and assign it to rule that matches mobile pohone traffic) and the other WebProfile is for laptop network, so in it profile you need to allow youtube.
Consider that whithout HTTPS inspection these rules and profile are not enough.
1.Create a web filter with streaming video block setting and other required filter settings 2.Create a device policy with Incoming interface "internal" and outgoing interface "wan" with source all/local network and device "Android phone", "Android Tablet" You can also use application filter to configure this policy
1. Predefined addresses based on MAC vendor. Then you can apply application control to policy that have source from that addesses. (This only work if your fortigate is endpoint gateway or your fortigate is between gateway and endpoint as layer 2 transparent mode)
eg. ac:61:ea:xx:xx:xx is apple.inc mac device. See, that ac:61:ea block is registered for apple.
Add address based on that address block
config firewall address edit "apple.inc" set type mac set start-mac ac:61:ea:00:00:00 set end-mac ac:61:ea:ff:ff:ff next end
Ofcourse doing this method requires a lot of effort. There are hundreds mac address block for apple.inc, samsung, htc and others mobile phone vendors.
2. Network Access Control (NAC)
Because the first one requires a lot of effort, network vendors sees this as an opportunity.
NAC provides visibility of endpoint device in your network, and identify endpoint devicees automatically for you.