Curated port reference

Port 1813: RADIUS accounting

RADIUS accounting commonly uses port 1813 over TCP + UDP. Review its purpose, traffic direction and operational security considerations.

1813TCP + UDP

RADIUS accounting

Session accounting records from RADIUS clients.

Typical use

RADIUS accounting endpoints in environments where this service is explicitly configured.

Traffic direction

Server to client

Security considerations

Protect accounting integrity and confidentiality, restrict clients, and monitor delivery failures.

Radius