Port 17222

cpsp · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicecpsp
Registered2011-11-10

Frequently asked questions

What is port 17222 used for?

Port 17222 is registered with the IANA for cpsp (TCP/UDP). Description: Reserved; Control Plane Synchronization Protocol (SPSP).

Is port 17222 a well-known port?

No. Port 17222 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 17222 is open?

Locally on Linux with ss -tulpn | grep ':17222\b', on Windows with netstat -ano | findstr :17222. To test a remote host use Test-NetConnection <host> -Port 17222 in PowerShell or nc -zv <host> 17222 on Linux/macOS.

How do I open port 17222 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 17222/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=17222/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 17222" -Direction Inbound -Protocol TCP -LocalPort 17222 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCP–Reserved
UDPcpspControl Plane Synchronization Protocol (SPSP)

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