All ports
Port547/UDP
dhcpv6-serverPort
547
Protocol
UDP
Category
Well-Known
Service
dhcpv6-server
What is port 547?
Port 547/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the dhcpv6-server service.
DHCPv6 Server
Useful commands
nmapnmap -p 547 -sV example.comnetcatnc -zv example.com 547curlcurl -v http://example.com:547/telnettelnet example.com 547bash(echo > /dev/udp/example.com/547) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 547/udpDeny
sudo ufw deny 547/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 547 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 547 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=547/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 547" dir=in action=allow protocol=UDP localport=547Security 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- Outdated versions with vulnerabilities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 547/UDP?
Port 547/UDP is associated with the dhcpv6-server service. DHCPv6 Server
Is it safe to expose port 547 to the Internet?
It depends on the service and configuration. Port 547 (dhcpv6-server) 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 547 is open?
You can use nmap: `nmap -p 547 -sV example.com`, netcat: `nc -zv example.com 547`, or the bash command: `(echo > /dev/udp/example.com/547) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 547 on my firewall?
On Linux with UFW: `sudo ufw allow 547/udp` (open) or `sudo ufw deny 547/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 547 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 547" dir=in action=allow protocol=UDP localport=547`.
What applications and services use port 547?
Port 547/UDP is used by the dhcpv6-server service. Specific uses depend on the software and configuration. Check our related tools section for more information.