All ports
Port4369/UDP
epmdPort
4369
Protocol
UDP
Category
Registered
Service
epmd
What is port 4369?
Port 4369/UDP is a Registered port, registered with IANA for specific applications. It is associated with the epmd service.
Erlang Port Mapper Daemon
Useful commands
nmapnmap -p 4369 -sV example.comnetcatnc -zv example.com 4369curlcurl -v http://example.com:4369/telnettelnet example.com 4369bash(echo > /dev/udp/example.com/4369) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4369/udpDeny
sudo ufw deny 4369/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 4369 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 4369 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4369/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4369" dir=in action=allow protocol=UDP localport=4369Security 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- Outdated versions with vulnerabilities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 4369/UDP?
Port 4369/UDP is associated with the epmd service. Erlang Port Mapper Daemon
Is it safe to expose port 4369 to the Internet?
It depends on the service and configuration. Port 4369 (epmd) 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 4369 is open?
You can use nmap: `nmap -p 4369 -sV example.com`, netcat: `nc -zv example.com 4369`, or the bash command: `(echo > /dev/udp/example.com/4369) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4369 on my firewall?
On Linux with UFW: `sudo ufw allow 4369/udp` (open) or `sudo ufw deny 4369/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 4369 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4369" dir=in action=allow protocol=UDP localport=4369`.
What applications and services use port 4369?
Port 4369/UDP is used by the epmd service. Specific uses depend on the software and configuration. Check our related tools section for more information.