DD-WRT Policy Based Routing?

[Goose]

My brother moved to Belgium not long ago and he wants to use a VPN within his DD WRT router that only affects one or two devices in the network and as I understand it that means policy based routing.

In the examples i've seen people add an IP and then a forward slash with a number after it (192.168.1.10/24 for example). I haven't yet been able to find out what the forward slash and number means and I was hoping someone here might enlighten me.

Cheers.

 

[Goose]

Thanks for that. The device he wants to use with a VPN is an Amazon FireTV and its a absolute pain trying to use VPN client apps on it hence this thread.