Network issue after Vaadin24 Migration

Hi all,

after migrating a Vaadin8 application to Vaadin24 version, our IT Security noted some network traffic from the server in which the appllication is installed toward links included in the attachment.
Can anyone tell me if it could depend on the new Vaadin version? Thanks!

Vaadin does not call any external services. It might be the add-ons or fonts or other stuff you call.