I do not receive and send whatsapp messages

Ok but you have tried to remove the configuration I wrote above to test if Whatsapp works again?

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thank you very much, I will try as soon as I can. can I ask you more? lately our students are showing particular interest in the deep web. is there a way to prevent using the tor network or other ways to bypass the firewall?

Hi @nicovon,

you may block it with DPI and a firewall rule: