// REFERENCE
Port 853 (DNS over TLS)
Protocol: TCP
Service: DoT
Low risk
DNS over TLS (DoT): encrypted DNS queries so no one can see or tamper with them in transit. An alternative to DoH (over 443) with its own port, easier to manage on the network.
Related tools
Work with this in:
Related
53
Port 53 (DNS) 88
Port 88 (Kerberos) 389
Port 389 (LDAP) 636
Port 636 (LDAPS) 43
Port 43 (WHOIS) 3268
Port 3268 (AD Global Catalog)
Port 53 (DNS) 88
Port 88 (Kerberos) 389
Port 389 (LDAP) 636
Port 636 (LDAPS) 43
Port 43 (WHOIS) 3268
Port 3268 (AD Global Catalog)
Assignments per the IANA port registry. Educational content.