All ports
Port21337/TCP
xahaudPort
21337
Protocol
TCP
Category
Registered
Service
xahaud
What is port 21337?
Port 21337/TCP is a Registered port, registered with IANA for specific applications. It is associated with the xahaud service.
Xahau P2P network protocol
Useful commands
nmapnmap -p 21337 -sV example.comnetcatnc -zv example.com 21337curlcurl -v http://example.com:21337/telnettelnet example.com 21337bash(echo > /dev/tcp/example.com/21337) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 21337/tcpDeny
sudo ufw deny 21337/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 21337 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 21337 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=21337/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 21337" dir=in action=allow protocol=TCP localport=21337Security 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- Outdated versions with vulnerabilities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 21337/TCP?
Port 21337/TCP is associated with the xahaud service. Xahau P2P network protocol
Is it safe to expose port 21337 to the Internet?
It depends on the service and configuration. Port 21337 (xahaud) 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 21337 is open?
You can use nmap: `nmap -p 21337 -sV example.com`, netcat: `nc -zv example.com 21337`, or the bash command: `(echo > /dev/tcp/example.com/21337) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 21337 on my firewall?
On Linux with UFW: `sudo ufw allow 21337/tcp` (open) or `sudo ufw deny 21337/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 21337 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 21337" dir=in action=allow protocol=TCP localport=21337`.
What applications and services use port 21337?
Port 21337/TCP is used by the xahaud service. Specific uses depend on the software and configuration. Check our related tools section for more information.