All ports
Port4189/TCP
pcepPort
4189
Protocol
TCP
Category
Registered
Service
pcep
What is port 4189?
Port 4189/TCP is a Registered port, registered with IANA for specific applications. It is associated with the pcep service.
Path Computation Element Communication Protocol
Useful commands
nmapnmap -p 4189 -sV example.comnetcatnc -zv example.com 4189curlcurl -v http://example.com:4189/telnettelnet example.com 4189bash(echo > /dev/tcp/example.com/4189) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4189/tcpDeny
sudo ufw deny 4189/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 4189 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 4189 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4189/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4189" dir=in action=allow protocol=TCP localport=4189Security 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- Outdated versions with vulnerabilities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 4189/TCP?
Port 4189/TCP is associated with the pcep service. Path Computation Element Communication Protocol
Is it safe to expose port 4189 to the Internet?
It depends on the service and configuration. Port 4189 (pcep) 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 4189 is open?
You can use nmap: `nmap -p 4189 -sV example.com`, netcat: `nc -zv example.com 4189`, or the bash command: `(echo > /dev/tcp/example.com/4189) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4189 on my firewall?
On Linux with UFW: `sudo ufw allow 4189/tcp` (open) or `sudo ufw deny 4189/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 4189 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4189" dir=in action=allow protocol=TCP localport=4189`.
What applications and services use port 4189?
Port 4189/TCP is used by the pcep service. Specific uses depend on the software and configuration. Check our related tools section for more information.