All ports
Port3974/UDP
xk22Port
3974
Protocol
UDP
Category
Registered
Service
xk22
What is port 3974?
Port 3974/UDP is a Registered port, registered with IANA for specific applications. It is associated with the xk22 service.
Remote Applicant Tracking Service
Useful commands
nmapnmap -p 3974 -sV example.comnetcatnc -zv example.com 3974curlcurl -v http://example.com:3974/telnettelnet example.com 3974bash(echo > /dev/udp/example.com/3974) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3974/udpDeny
sudo ufw deny 3974/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 3974 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 3974 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3974/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3974" dir=in action=allow protocol=UDP localport=3974Security Risks
- Unauthorized access to the service
- Data exposure if the service is unauthenticated
- Outdated versions with vulnerabilities
- Incorrect service configuration
Frequently Asked Questions
What service runs on port 3974/UDP?
Port 3974/UDP is associated with the xk22 service. Remote Applicant Tracking Service
Is it safe to expose port 3974 to the Internet?
It depends on the service and configuration. Port 3974 (xk22) is a Registered port. If you need to expose it, keep the service updated, use strong authentication, and configure a firewall. It's always recommended to restrict access by IP when possible.
How do I check if port 3974 is open?
You can use nmap: `nmap -p 3974 -sV example.com`, netcat: `nc -zv example.com 3974`, or the bash command: `(echo > /dev/udp/example.com/3974) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3974 on my firewall?
On Linux with UFW: `sudo ufw allow 3974/udp` (open) or `sudo ufw deny 3974/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 3974 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3974" dir=in action=allow protocol=UDP localport=3974`.
What applications and services use port 3974?
Port 3974/UDP is used by the xk22 service. Specific uses depend on the software and configuration. Check our related tools section for more information.