Port 1813 — RADIUS Accounting

Q: Transport ProtocolUDPSafety precautionsRetain to authorized equipment.Should we open this port in the Burt?

Only if a service is actually needed l, use it. Apply the principle of any privilege: limit the authorized sources, destinations and interfaces, and then log connections when relevant.

Q: How do I check this port?

Test-NetConnection SERVER -Port 1813Under Linux, you can use nc -vz SERVER 1813.

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Port1813

TransportUDP

ServiceRADIUS Accounting

Port 1813UDP

Comp.

What is the purpose of port 1813?

Authentication. The protocol or service generally associated is RADIUS Accounting.

Transport Protocol

UDP

Safety precautions

Retain to authorized equipment.

Should we open this port in the firewall?

Only if a service is actually needed the use it. Apply the principle of any privilege: limit the authorized sources, destinations and interfaces, and then log connections when relevant.

How do I check this port?

Test-NetConnection SERVER -Port 1813

Under Linux, you can use nc -vz SERVER 1813.

Port/service associations are common conventions. An application can be configured on another port.