All ports
Port4666/UDP
eportcommPort
4666
Protocol
UDP
Category
Registered
Service
eportcomm
What is port 4666?
Port 4666/UDP is a Registered port, registered with IANA for specific applications. It is associated with the eportcomm service.
E-Port Message Service
Useful commands
nmapnmap -p 4666 -sV example.comnetcatnc -zv example.com 4666curlcurl -v http://example.com:4666/telnettelnet example.com 4666bash(echo > /dev/udp/example.com/4666) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4666/udpDeny
sudo ufw deny 4666/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 4666 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 4666 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4666/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4666" dir=in action=allow protocol=UDP localport=4666Security 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- Outdated versions with vulnerabilities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 4666/UDP?
Port 4666/UDP is associated with the eportcomm service. E-Port Message Service
Is it safe to expose port 4666 to the Internet?
It depends on the service and configuration. Port 4666 (eportcomm) 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 4666 is open?
You can use nmap: `nmap -p 4666 -sV example.com`, netcat: `nc -zv example.com 4666`, or the bash command: `(echo > /dev/udp/example.com/4666) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4666 on my firewall?
On Linux with UFW: `sudo ufw allow 4666/udp` (open) or `sudo ufw deny 4666/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 4666 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4666" dir=in action=allow protocol=UDP localport=4666`.
What applications and services use port 4666?
Port 4666/UDP is used by the eportcomm service. Specific uses depend on the software and configuration. Check our related tools section for more information.