DNS over HTTPS is a relatively new security protocol on the Internetnetwork which promises increased privacy and security. But how does it work? Would you trade fast internet for privacy?
What is DNS over HTTPS?
The DNS over HTTPS (or simply DoH) is a security protocol that allows you to send and receive Domain Name System (DNS) requests over a Hypertext Transfer Protocol Secure (or simply HTTPS from Hypertext Transfer Protocol Secure). DoH encrypts all DNS records, which could be aimed at revealing information about your online activity as well as physics your location.
Τα περισσότερα κύρια προγράμματα περιήγησης, όπως το Google Chrome, το Microsoft Edge, το Brave, το Safari και το Opera, διαθέτουν ενσωματωμένη υποστήριξη για το πρωτόκολλο DoH. Όσον αφορά τον Firefox, έχει ενεργοποιήσει το DoH από προεπιλογή για όλους τους χρήστες επιτραπέζιων υπολογιστών που εδρεύουν στις ΗΠΑ από το 2019.
How does DNS over HTTPS work?
His role DoH it starts with every request for the IP address of a website or domain that sends it program περιήγησής σας. Ο DNS server μετατρέπει το όνομα του ιστότοπου – αυτό που πληκτρολογείτε στη γραμμή διευθύνσεων στο επάνω μέρος του προγράμματος περιήγησής σας – σε μια μοναδική διεύθυνση IP που αντιστοιχεί στους διακομιστές του ιστότοπου.
Once the IP address is sent back, your browser uses HTTPS, or HTTP if the connection is not secure, and asks for the IP address to access the desired sites. This is a long and tedious process, and most browsers and websites use cache data to make it faster.
You may have noticed that the encrypted connection only comes after DNS completes its role, leaving some of your data vulnerable to trackers and intruders. Using DoH, all DNS requests are enclosed in HTTPS sessions.
Is DNS over HTTPS slower?
Most of the time, privacy and security come at a cost. Here the cost is the reduction of connection speeds. After all, more data is needed for encryption and decryption, so it's natural for secure communication to take a little longer than unsecured.
Compared to other DNS encryption protocols, DoH has one of the longest page load and standby times. However, the differences are very small. How fast your DoH performs depends on DNS providers such as Cloudflare and Google.
Can encrypted DNS be fast?
Understanding how to protect your online business and keep it safe from prying eyes is understandable. DoH can negatively affect your connection speeds, this is not the case for all encrypted DNS security protocols.
A variation of encrypted DNS is DoT, which means DNS over TLS or Transport Layer Security, a modern variant of SSL. DoT does the same job that DoH does for the security and privacy of your connection.
The main difference is that DoT performs faster than DNS in the median response time for some clients, although there has been a slight increase in latency. However, recent research has found that the performance of DoT, DoH, and non-encrypted DNS varies by client, and that no protocol excels in all trials and circumstances.
Is the extra safety worth the slight speed reduction?
When it comes to choosing the Internet security protocol you want to use, you need to ask yourself the right questions. Whether DoH is right for you depends on whether you want more privacy and security for your browsing, even if it is a little slower.
