:853
(TCP)
Low Risk
DNS over TLS
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TCP — DNS
Port Overview
Port Number
853
Service Name
DNS over TLS
Transport Protocol
TCP
Category
DNS
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 853?
DNS over TLS (DoT). Encrypts DNS queries between client and recursive resolver using TLS, preventing eavesdropping and manipulation of DNS traffic.
TCP
DNS
Commonly Used
Security Considerations
Port 853 (DNS over TLS) is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose.
Recommendation: Standard security practices apply. Keep software updated and monitor access.