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28 Οκτ 2024 · DNS uses Port 53 and stands out because it uses both Ports 53/TCP and 53/UDP. DHCP is another unique case that also uses TCP and UDP ports. It might be necessary to open Ports 53/TCP and 53/UDP on firewalls.
Port 53 supports both TCP and UDP transport protocols for DNS communication, each with its own characteristics and use cases. UDP is the primary transport protocol for DNS queries and responses, as it is lightweight, fast, and efficient.
Port 53 is the standard port for DNS traffic and allows computers to translate domain names into IP addresses through DNS queries. It uses both TCP and UDP for communications. UDP is more common for standard DNS queries, while TCP is used for zone transfers between DNS servers.
The answer is DNS is mostly UDP Port 53, but as time progresses, DNS will rely on TCP Port 53 more heavily.
10 Ιαν 2024 · Port 53 is the well-known default port for DNS communication. DNS queries and responses can be transmitted over both UDP (User Datagram Protocol) and TCP (Transmission Control Protocol) on Port 53. DNS queries are typically sent using UDP on Port 53.
28 Οκτ 2024 · Learn how DNS uses both TCP and UDP on port 53. Differences, and when each protocol is needed for reliable, robust name resolution.
13 Απρ 2023 · Actually, DNS primarily uses the User Datagram Protocol (UDP) on port number 53 to serve requests. DNS queries consist of a single UDP request from the client followed by a single UDP reply from the server.
