DNS over HTTPS vs DNS over TLS - Which one is more secure
DNS (Domain Name System) is an essential part of the internet that translates domain names to their corresponding IP addresses. DNS over HTTPS (DoH) and DNS over TLS (DoT) are two protocols designed to encrypt DNS queries and protect users' privacy. Both protocols have a similar goal, but they differ in their implementation and level of security.
DNS over HTTPS (DoH)
DoH is a security protocol that encrypts DNS queries over the HTTPS protocol. DoH provides an additional layer of security and privacy by preventing eavesdropping and tampering of DNS queries. DoH allows DNS queries to be resolved through an HTTPS connection, which encrypts the entire session, including the domain name, IP address, and the query itself.
DoH aims to protect users' privacy by preventing their ISP (Internet Service Provider) from logging and monitoring their internet activity. By encrypting DNS traffic, DoH ensures that ISPs cannot see the websites users visit, improving users' privacy and security.
DNS over TLS (DoT)
DoT is another security protocol that encrypts DNS queries by wrapping them in a TLS (Transport Layer Security) layer. DoT encrypts DNS queries from the device to a DNS server, providing confidentiality and integrity of DNS queries. By adding a layer of encryption, DoT prevents attackers from intercepting and modifying DNS queries, reducing the risk of DNS-based attacks.
The DoT protocol enables domain name queries to be sent over an encrypted connection, preventing prying eyes from seeing what users are querying. By default, DNS queries are typically sent in clear text, meaning the domain name and its associated IP address can be seen by anyone who is watching.
DoH vs DoT - Which one is more secure
DoH and DoT are both effective approaches to improving DNS security and privacy. Both protocols encrypt DNS queries, making them more secure than the traditional DNS protocol. However, there are some differences that are worth comparing.
DoH is more firewall-friendly since it uses port 443 for HTTPS traffic, which is often left open on firewalls. On the other hand, DoT uses port 853, which is not always open on firewalls, making it more difficult to implement.
In terms of performance, DoT is faster than DoH since it uses less overhead for encryption. However, the difference in performance is negligible, and it is unlikely to be noticeable by most users.
DoT is also more configurable than DoH since it has more available settings to tweak to improve security, but this configurability can be a double-edged sword. If configured incorrectly, DoT may be less secure than DoH.
In terms of compatibility, DoH is more widely supported than DoT, with most major browsers, including Firefox, Chrome, and Edge, supporting it. However, DoT is also widely supported and can be used on most devices.
Conclusion
In conclusion, both DNS over HTTPS and DNS over TLS offer enhanced privacy and security compared to traditional DNS. DoH is firewall-friendly, widely supported, and easier to implement. DoT is faster and has a greater degree of configurability with the right settings. Ultimately, the choice between DoH and DoT depends on the user's circumstances and preferences.