All ports
Port411/UDP
rmtPort
411
Protocol
UDP
Category
Well-Known
Service
rmt
What is port 411?
Port 411/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the rmt service.
Remote MT Protocol
Useful commands
nmapnmap -p 411 -sV example.comnetcatnc -zv example.com 411curlcurl -v http://example.com:411/telnettelnet example.com 411bash(echo > /dev/udp/example.com/411) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 411/udpDeny
sudo ufw deny 411/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 411 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 411 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=411/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 411" dir=in action=allow protocol=UDP localport=411Security 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- Outdated versions with vulnerabilities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 411/UDP?
Port 411/UDP is associated with the rmt service. Remote MT Protocol
Is it safe to expose port 411 to the Internet?
It depends on the service and configuration. Port 411 (rmt) is a Well-Known 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 411 is open?
You can use nmap: `nmap -p 411 -sV example.com`, netcat: `nc -zv example.com 411`, or the bash command: `(echo > /dev/udp/example.com/411) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 411 on my firewall?
On Linux with UFW: `sudo ufw allow 411/udp` (open) or `sudo ufw deny 411/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 411 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 411" dir=in action=allow protocol=UDP localport=411`.
What applications and services use port 411?
Port 411/UDP is used by the rmt service. Specific uses depend on the software and configuration. Check our related tools section for more information.