Configuring UDP Ports for the RAD-Series RADIUS Server
The transaction-based RADIUS protocol uses two UDP ports: one for authentication packets and one for accounting packets. The ports must be configured on two sides: RAD-Series RADIUS Server and the RADIUS clients (SRC software and JUNOSe router).
The officially assigned UDP port numbers are:
Early deployments of RADIUS used 1645/UDP for authentication packets and 1646/UDP for accounting packets.
Both RAD-Series RADIUS Server and the JUNOSe router use the official ports by default. If you decide to use different ports, you can change the port after you start RAD-Series RADIUS Server. See Starting and Stopping RAD-Series Server Manager.