All ports
Port5681/UDP
ncxcpPort
5681
Protocol
UDP
Category
Registered
Service
ncxcp
What is port 5681?
Port 5681/UDP is a Registered port, registered with IANA for specific applications. It is associated with the ncxcp service.
Net-coneX Control Protocol
Useful commands
nmapnmap -p 5681 -sV example.comnetcatnc -zv example.com 5681curlcurl -v http://example.com:5681/telnettelnet example.com 5681bash(echo > /dev/udp/example.com/5681) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 5681/udpDeny
sudo ufw deny 5681/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 5681 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 5681 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=5681/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 5681" dir=in action=allow protocol=UDP localport=5681Security 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- Outdated versions with vulnerabilities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 5681/UDP?
Port 5681/UDP is associated with the ncxcp service. Net-coneX Control Protocol
Is it safe to expose port 5681 to the Internet?
It depends on the service and configuration. Port 5681 (ncxcp) 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 5681 is open?
You can use nmap: `nmap -p 5681 -sV example.com`, netcat: `nc -zv example.com 5681`, or the bash command: `(echo > /dev/udp/example.com/5681) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 5681 on my firewall?
On Linux with UFW: `sudo ufw allow 5681/udp` (open) or `sudo ufw deny 5681/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 5681 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 5681" dir=in action=allow protocol=UDP localport=5681`.
What applications and services use port 5681?
Port 5681/UDP is used by the ncxcp service. Specific uses depend on the software and configuration. Check our related tools section for more information.