Port 24850Device Association Discovery Protocol

Microsoft Device Association Discovery uses UDP for discovering devices on a local network.

transport: udp
in transit: cleartext
assignment: official
risk: 2/10
lookups: 0

also known as assoc-disc

Technical Details

what runs on :24850

The assignment is for Microsoft's Device Association Discovery Protocol, a local-network discovery service carried over UDP on port 24850. UDP has no connection handshake or persistent session; discovery traffic is datagram-based. It is intended for device discovery on a LAN, not for public clients, and should not be confused with SSDP on UDP 1900.

Security Information

exposure of :24850

risk score

2/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

network services averages 2.6 across 1,946 ports — this one sits 0.6 below.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

This service is not normally meant to be exposed to the public internet. Unrestricted access could allow unsolicited discovery traffic and reveal that a device-association endpoint is present; limit it to trusted local networks. The protocol is not encrypted by default.

Record

iana registry entry

port: :24850
service: Device Association Discovery Protocol
transport: UDP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services System
usage: This is Microsoft's UDP service for device-association discovery, used by Windows device-association components to find devices on a local network. It is not a general-purpose internet-facing service.
lookups: 0rank 993
added: 2026-10-19
updated: 2026-10-19
references: IANA service name registry — port 24850

Something wrong?

This record is maintained by the engineers who use port 24850. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-19.

01edit any field on a page of its own
02a model checks it for accuracy and spam
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edit this record →back to the registry

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :24850Device Association Discovery Protocol

Technical Details

Security Information

Related Ports

Port 24850Device Association Discovery Protocol