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So you will need to block the specific services one by one. And not "all"
@Yonairo_Argu : You'll likely need to use layer 7 firewall rules to allow/block the IP ranges or DNS names the service uses. or just allow
whatsapp.net
whatsapp.com
Greetings! But layer 7 rules do not allow you to configure an allow rule, only to deny
@Yonairo_Argu : That's correct but i think if it is not denied then it is allowed !
But, we need to block all social networks except whatsapp, but, whatsapp is included in "All social webs and photo sharing". So, we would be blocking whatsapp too, and the idea is to allow it.
So you will need to block the specific services one by one. And not "all"
@Yonairo_Argu : This is important what @ww says.. Block the services one by one !