All ports
Port8901/TCP
jmb-cds2Port
8901
Protocol
TCP
Category
Registered
Service
jmb-cds2
What is port 8901?
Port 8901/TCP is a Registered port, registered with IANA for specific applications. It is associated with the jmb-cds2 service.
JMB-CDS 2
Useful commands
nmapnmap -p 8901 -sV example.comnetcatnc -zv example.com 8901curlcurl -v http://example.com:8901/telnettelnet example.com 8901bash(echo > /dev/tcp/example.com/8901) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 8901/tcpDeny
sudo ufw deny 8901/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 8901 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 8901 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=8901/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 8901" dir=in action=allow protocol=TCP localport=8901Security 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- Outdated versions with vulnerabilities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 8901/TCP?
Port 8901/TCP is associated with the jmb-cds2 service. JMB-CDS 2
Is it safe to expose port 8901 to the Internet?
It depends on the service and configuration. Port 8901 (jmb-cds2) 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 8901 is open?
You can use nmap: `nmap -p 8901 -sV example.com`, netcat: `nc -zv example.com 8901`, or the bash command: `(echo > /dev/tcp/example.com/8901) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 8901 on my firewall?
On Linux with UFW: `sudo ufw allow 8901/tcp` (open) or `sudo ufw deny 8901/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 8901 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 8901" dir=in action=allow protocol=TCP localport=8901`.
What applications and services use port 8901?
Port 8901/TCP is used by the jmb-cds2 service. Specific uses depend on the software and configuration. Check our related tools section for more information.