All ports
Port2204/UDP
b2-licensePort
2204
Protocol
UDP
Category
Registered
Service
b2-license
What is port 2204?
Port 2204/UDP is a Registered port, registered with IANA for specific applications. It is associated with the b2-license service.
b2 License Server
Useful commands
nmapnmap -p 2204 -sV example.comnetcatnc -zv example.com 2204curlcurl -v http://example.com:2204/telnettelnet example.com 2204bash(echo > /dev/udp/example.com/2204) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 2204/udpDeny
sudo ufw deny 2204/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 2204 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 2204 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=2204/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 2204" dir=in action=allow protocol=UDP localport=2204Security 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- Outdated versions with vulnerabilities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 2204/UDP?
Port 2204/UDP is associated with the b2-license service. b2 License Server
Is it safe to expose port 2204 to the Internet?
It depends on the service and configuration. Port 2204 (b2-license) 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 2204 is open?
You can use nmap: `nmap -p 2204 -sV example.com`, netcat: `nc -zv example.com 2204`, or the bash command: `(echo > /dev/udp/example.com/2204) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 2204 on my firewall?
On Linux with UFW: `sudo ufw allow 2204/udp` (open) or `sudo ufw deny 2204/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 2204 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 2204" dir=in action=allow protocol=UDP localport=2204`.
What applications and services use port 2204?
Port 2204/UDP is used by the b2-license service. Specific uses depend on the software and configuration. Check our related tools section for more information.