All ports
Port4390/UDP
wiegandPort
4390
Protocol
UDP
Category
Registered
Service
wiegand
What is port 4390?
Port 4390/UDP is a Registered port, registered with IANA for specific applications. It is associated with the wiegand service.
Physical Access Control
Useful commands
nmapnmap -p 4390 -sV example.comnetcatnc -zv example.com 4390curlcurl -v http://example.com:4390/telnettelnet example.com 4390bash(echo > /dev/udp/example.com/4390) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4390/udpDeny
sudo ufw deny 4390/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 4390 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 4390 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4390/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4390" dir=in action=allow protocol=UDP localport=4390Security 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- Outdated versions with vulnerabilities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 4390/UDP?
Port 4390/UDP is associated with the wiegand service. Physical Access Control
Is it safe to expose port 4390 to the Internet?
It depends on the service and configuration. Port 4390 (wiegand) 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 4390 is open?
You can use nmap: `nmap -p 4390 -sV example.com`, netcat: `nc -zv example.com 4390`, or the bash command: `(echo > /dev/udp/example.com/4390) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4390 on my firewall?
On Linux with UFW: `sudo ufw allow 4390/udp` (open) or `sudo ufw deny 4390/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 4390 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4390" dir=in action=allow protocol=UDP localport=4390`.
What applications and services use port 4390?
Port 4390/UDP is used by the wiegand service. Specific uses depend on the software and configuration. Check our related tools section for more information.