A school filters harmful websites by controlling DNS on port 53, yet some browsers still reach blocked sites without any VPN. Which feature is most likely letting them bypass the filter?
Une école filtre les sites web nuisibles en contrôlant le DNS sur le port 53, mais certains navigateurs atteignent encore des sites bloqués sans aucun VPN. Quelle fonctionnalité leur permet le plus probablement de contourner le filtre ?
Answers
AIPv6 link-local addresses on the school's switchesLes adresses IPv6 de lien local sur les commutateurs de l'école
BDHCP reservations made for the students' laptopsLes réservations DHCP faites pour les ordinateurs des élèves
CHTTP/1.1 keep-alive connections held open by browsersLes connexions HTTP/1.1 keep-alive maintenues ouvertes par les navigateurs
DDNS over HTTPS inside ordinary port 443 trafficLe DNS sur HTTPS, dans le trafic ordinaire du port 443
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