Disable acces to sites of my network

[AnLa]

Hello. In our network we have 5 sites, wich attached to 1 external IP. How can i deny acces from internet to 3 of them on Fortigate?

[sw2090]

You don't really need to because everything that is not explicitely allowed on a Fortigate is implicitely denied :) So it's vice versa - if you want to be able to access one of your lans (or a host in there) you will need policies and/or vip.