Allow HTTP(S) and Twitter from iOS. Block all other traffic.

Question

Hello, 
 What is the best way to achieve this please ? 
 Creating the http(s) rule is done, appliance certificate is imported. 
 I hoped to use ‘Applications’ to control the access to the internet. It is easy to block Twitter using apps but I cannot figure out how to use applications to block everything except one app. 
 Thanks.

lferrara · Accepted Answer

Koen, 
 please report it to XG v17 beta section. On v16, deny all is selectable. You need a template where the default action is deny. 
 Regards

lferrara · Answer

KoenT, 
 when you create a new Application Filter, as template use "deny all" and then add the APPs you would like to allow and that's it. Lastly, create a firewall rule and attack the new App Filter. 
 Regards