All ports
Port4066/UDP
pmasPort
4066
Protocol
UDP
Category
Registered
Service
pmas
What is port 4066?
Port 4066/UDP is a Registered port, registered with IANA for specific applications. It is associated with the pmas service.
Performance Measurement and Analysis
Useful commands
nmapnmap -p 4066 -sV example.comnetcatnc -zv example.com 4066curlcurl -v http://example.com:4066/telnettelnet example.com 4066bash(echo > /dev/udp/example.com/4066) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4066/udpDeny
sudo ufw deny 4066/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 4066 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 4066 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4066/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4066" dir=in action=allow protocol=UDP localport=4066Security 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- Outdated versions with vulnerabilities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 4066/UDP?
Port 4066/UDP is associated with the pmas service. Performance Measurement and Analysis
Is it safe to expose port 4066 to the Internet?
It depends on the service and configuration. Port 4066 (pmas) 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 4066 is open?
You can use nmap: `nmap -p 4066 -sV example.com`, netcat: `nc -zv example.com 4066`, or the bash command: `(echo > /dev/udp/example.com/4066) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4066 on my firewall?
On Linux with UFW: `sudo ufw allow 4066/udp` (open) or `sudo ufw deny 4066/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 4066 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4066" dir=in action=allow protocol=UDP localport=4066`.
What applications and services use port 4066?
Port 4066/UDP is used by the pmas service. Specific uses depend on the software and configuration. Check our related tools section for more information.