QUIC was measured as taking a signifiant part of the volume transmitted in broadband access, in particular because of the players implementing it, such as Google or Facebook. QUIC hides the packet transport headers and therefore impacts the classical in-network operations that are deployed to adapt the congestion control in specific contexts or manage the networks. More generally, this seminar discusses the impacts of the deployment of secured transport layer protocols on in-network operations and on end user experience in SATCOM systems.