All ports
Port7421/UDP
mtportmonPort
7421
Protocol
UDP
Category
Registered
Service
mtportmon
What is port 7421?
Port 7421/UDP is a Registered port, registered with IANA for specific applications. It is associated with the mtportmon service.
Matisse Port Monitor
Useful commands
nmapnmap -p 7421 -sV example.comnetcatnc -zv example.com 7421curlcurl -v http://example.com:7421/telnettelnet example.com 7421bash(echo > /dev/udp/example.com/7421) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 7421/udpDeny
sudo ufw deny 7421/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 7421 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 7421 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=7421/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 7421" dir=in action=allow protocol=UDP localport=7421Security 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- Outdated versions with vulnerabilities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 7421/UDP?
Port 7421/UDP is associated with the mtportmon service. Matisse Port Monitor
Is it safe to expose port 7421 to the Internet?
It depends on the service and configuration. Port 7421 (mtportmon) 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 7421 is open?
You can use nmap: `nmap -p 7421 -sV example.com`, netcat: `nc -zv example.com 7421`, or the bash command: `(echo > /dev/udp/example.com/7421) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 7421 on my firewall?
On Linux with UFW: `sudo ufw allow 7421/udp` (open) or `sudo ufw deny 7421/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 7421 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 7421" dir=in action=allow protocol=UDP localport=7421`.
What applications and services use port 7421?
Port 7421/UDP is used by the mtportmon service. Specific uses depend on the software and configuration. Check our related tools section for more information.