All ports
Port2931/TCP
circle-xPort
2931
Protocol
TCP
Category
Registered
Service
circle-x
What is port 2931?
Port 2931/TCP is a Registered port, registered with IANA for specific applications. It is associated with the circle-x service.
Circle-X
Useful commands
nmapnmap -p 2931 -sV example.comnetcatnc -zv example.com 2931curlcurl -v http://example.com:2931/telnettelnet example.com 2931bash(echo > /dev/tcp/example.com/2931) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 2931/tcpDeny
sudo ufw deny 2931/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 2931 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 2931 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=2931/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 2931" dir=in action=allow protocol=TCP localport=2931Security 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- Outdated versions with vulnerabilities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 2931/TCP?
Port 2931/TCP is associated with the circle-x service. Circle-X
Is it safe to expose port 2931 to the Internet?
It depends on the service and configuration. Port 2931 (circle-x) 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 2931 is open?
You can use nmap: `nmap -p 2931 -sV example.com`, netcat: `nc -zv example.com 2931`, or the bash command: `(echo > /dev/tcp/example.com/2931) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 2931 on my firewall?
On Linux with UFW: `sudo ufw allow 2931/tcp` (open) or `sudo ufw deny 2931/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 2931 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 2931" dir=in action=allow protocol=TCP localport=2931`.
What applications and services use port 2931?
Port 2931/TCP is used by the circle-x service. Specific uses depend on the software and configuration. Check our related tools section for more information.