All ports
Port2125/UDP
lockstepPort
2125
Protocol
UDP
Category
Registered
Service
lockstep
What is port 2125?
Port 2125/UDP is a Registered port, registered with IANA for specific applications. It is associated with the lockstep service.
LOCKSTEP
Useful commands
nmapnmap -p 2125 -sV example.comnetcatnc -zv example.com 2125curlcurl -v http://example.com:2125/telnettelnet example.com 2125bash(echo > /dev/udp/example.com/2125) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 2125/udpDeny
sudo ufw deny 2125/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 2125 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 2125 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=2125/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 2125" dir=in action=allow protocol=UDP localport=2125Security 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- Outdated versions with vulnerabilities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 2125/UDP?
Port 2125/UDP is associated with the lockstep service. LOCKSTEP
Is it safe to expose port 2125 to the Internet?
It depends on the service and configuration. Port 2125 (lockstep) 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 2125 is open?
You can use nmap: `nmap -p 2125 -sV example.com`, netcat: `nc -zv example.com 2125`, or the bash command: `(echo > /dev/udp/example.com/2125) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 2125 on my firewall?
On Linux with UFW: `sudo ufw allow 2125/udp` (open) or `sudo ufw deny 2125/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 2125 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 2125" dir=in action=allow protocol=UDP localport=2125`.
What applications and services use port 2125?
Port 2125/UDP is used by the lockstep service. Specific uses depend on the software and configuration. Check our related tools section for more information.