2053
Knetd / DNS over TLS
Low RiskTCP — DNS
Port Overview
Port Number
2053
Service Name
Knetd / DNS over TLS
Transport Protocol
TCP
Category
DNS
Security Risk
Low
Port Range
Registered (1024-49151)
What is Port 2053?
Port 2053 is used by Cloudflare and other providers as an alternative port for DNS over TLS (DoT) to avoid firewall blocking of the standard port 853. It provides encrypted DNS resolution to protect user privacy from eavesdropping. This port is gaining popularity as an alternative to standard DoT deployments.
TCP
DNS
Security Considerations
Port 2053 (Knetd / 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.