Registered · Cross-platform

1812 RADIUS authentication

TCP Yes
UDP Yes
SCTP —
DCCP —

What it is

Standard RADIUS authentication.

When / why

802.1X, VPN and Wi-Fi auth to the RADIUS/NPS/ISE server.

Protocol status detail

TransportStatusMeaning
TCP Yes Assigned by IANA and standardized, specified, or widely used on this port.
UDP Yes Assigned by IANA and standardized, specified, or widely used on this port.
SCTP — Not applicable for this transport.
DCCP — Not applicable for this transport.
« 1801 MSMQ 1813 RADIUS accounting »

Port range

Registered (1024–49151). Assigned by IANA on request; usable without elevated privileges on most systems.

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