All ports
Port4664/UDP
emsPort
4664
Protocol
UDP
Category
Registered
Service
ems
What is port 4664?
Port 4664/UDP is a Registered port, registered with IANA for specific applications. It is associated with the ems service.
Rimage Messaging Server
Useful commands
nmapnmap -p 4664 -sV example.comnetcatnc -zv example.com 4664curlcurl -v http://example.com:4664/telnettelnet example.com 4664bash(echo > /dev/udp/example.com/4664) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4664/udpDeny
sudo ufw deny 4664/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 4664 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 4664 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4664/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4664" dir=in action=allow protocol=UDP localport=4664Security 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- Outdated versions with vulnerabilities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 4664/UDP?
Port 4664/UDP is associated with the ems service. Rimage Messaging Server
Is it safe to expose port 4664 to the Internet?
It depends on the service and configuration. Port 4664 (ems) 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 4664 is open?
You can use nmap: `nmap -p 4664 -sV example.com`, netcat: `nc -zv example.com 4664`, or the bash command: `(echo > /dev/udp/example.com/4664) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4664 on my firewall?
On Linux with UFW: `sudo ufw allow 4664/udp` (open) or `sudo ufw deny 4664/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 4664 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4664" dir=in action=allow protocol=UDP localport=4664`.
What applications and services use port 4664?
Port 4664/UDP is used by the ems service. Specific uses depend on the software and configuration. Check our related tools section for more information.