Port 2083

radsec · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceradsec
ReferenceRFC 6614, RFC 7360
Registered2005-05
Modified2014-07-14

Frequently asked questions

What is port 2083 used for?

Port 2083 is registered with the IANA for radsec (TCP/UDP). Description: Secure Radius Service.

Is port 2083 a well-known port?

No. Port 2083 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 2083 is open?

Locally on Linux with ss -tulpn | grep ':2083\b', on Windows with netstat -ano | findstr :2083. To test a remote host use Test-NetConnection <host> -Port 2083 in PowerShell or nc -zv <host> 2083 on Linux/macOS.

How do I open port 2083 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 2083/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=2083/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 2083" -Direction Inbound -Protocol TCP -LocalPort 2083 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPradsecSecure Radius Service
UDPradsecSecure Radius Service

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