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Multicast DNS (mDNS) enables DNS-like operations within local networks without needing a traditional DNS server. It operates on UDP port 5353 and allows devices to discover each other and their services, commonly seen in various IoT devices.
31 maj 2024 · Click on the network port chart above to view the printable, searchable PDF version. Scroll down below for the port list tables. This list is by no means exhaustive. It just lists the most frequently used ports. There are a total of 65,535 TCP/UDP ports. They are divided into 3 classes: Well Known Ports (1-1023) – Reserved ports registered ...
Each query or advertisement is sent to the Bonjour multicast address ipv4 224.0.0.251 (ipv6 FF02::FB). This protocol uses mDNS on UDP port 5353. The address used by the Bonjour protocol is link-local multicast address and therefore is only forwarded to the local L2 network.
To resolve a domain name for a local address using mDNS, the device sends a DNS query for a domain name ending with .local to the multicast address 224.0.0.251 (for IPv4) or FF02::FB (for IPv6).
10 maj 2024 · Use this comprehensive common ports cheat sheet to learn about any port and several common protocols. It also includes a special search and copy function.
A compliant Multicast DNS querier, which implements the rules specified in this document, MUST send its Multicast DNS queries from UDP source port 5353 (the well-known port assigned to mDNS), and MUST listen for Multicast DNS replies sent to UDP destination port 5353 at the mDNS link-local multicast address (224.0.0.251 and/or its IPv6 ...
4 kwi 2022 · Pop open Wireshark on your home computer, set the capture filter to “udp port 5353”, which is the mDNS protocol (UDP) and port (5353), start the capture, then wait. Devices and services from Microsoft, Apple, Google, and Amazon all use mDNS in some capacity.
