Port 3974

xk22 · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicexk22
Registered2005-08
Modified2022-09-09

Frequently asked questions

What is port 3974 used for?

Port 3974 is registered with the IANA for xk22 (TCP/UDP). Description: Remote Applicant Tracking Service.

Is port 3974 a well-known port?

No. Port 3974 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3974 is open?

Locally on Linux with ss -tulpn | grep ':3974\b', on Windows with netstat -ano | findstr :3974. To test a remote host use Test-NetConnection <host> -Port 3974 in PowerShell or nc -zv <host> 3974 on Linux/macOS.

How do I open port 3974 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3974/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3974/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3974" -Direction Inbound -Protocol TCP -LocalPort 3974 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPxk22Remote Applicant Tracking Service
UDPxk22Remote Applicant Tracking Service

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