Port
Port 1812 — RADIUS auth
Port 1812 (UDP) is used by RADIUS auth. RADIUS authentication/authorisation.
Port 1812 at a glance
| Property | Value |
|---|---|
| Port number | 1812 |
| Transport | UDP |
| Service | RADIUS auth |
| Category | Registered port |
What it is used for
RADIUS authentication/authorisation.
Security considerations
Only the password is hidden; use IPsec or TLS (RadSec) for full protection.
See our full TCP/UDP port reference and learn how firewalls filter ports in the CyberOps course.
Frequently asked questions
What is port 1812 used for?
Port 1812 (UDP) is used by RADIUS auth. RADIUS authentication/authorisation.
Is port 1812 TCP or UDP?
Port 1812 uses UDP.
Is it safe to open port 1812?
Only the password is hidden; use IPsec or TLS (RadSec) for full protection.
Related
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