All ports
Port4043/TCP
nirpPort
4043
Protocol
TCP
Category
Registered
Service
nirp
What is port 4043?
Port 4043/TCP is a Registered port, registered with IANA for specific applications. It is associated with the nirp service.
Neighbour Identity Resolution
Useful commands
nmapnmap -p 4043 -sV example.comnetcatnc -zv example.com 4043curlcurl -v http://example.com:4043/telnettelnet example.com 4043bash(echo > /dev/tcp/example.com/4043) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4043/tcpDeny
sudo ufw deny 4043/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 4043 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 4043 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4043/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4043" dir=in action=allow protocol=TCP localport=4043Security 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- Outdated versions with vulnerabilities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 4043/TCP?
Port 4043/TCP is associated with the nirp service. Neighbour Identity Resolution
Is it safe to expose port 4043 to the Internet?
It depends on the service and configuration. Port 4043 (nirp) 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 4043 is open?
You can use nmap: `nmap -p 4043 -sV example.com`, netcat: `nc -zv example.com 4043`, or the bash command: `(echo > /dev/tcp/example.com/4043) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4043 on my firewall?
On Linux with UFW: `sudo ufw allow 4043/tcp` (open) or `sudo ufw deny 4043/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 4043 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4043" dir=in action=allow protocol=TCP localport=4043`.
What applications and services use port 4043?
Port 4043/TCP is used by the nirp service. Specific uses depend on the software and configuration. Check our related tools section for more information.