All ports
Port6421/TCP
nim-wanPort
6421
Protocol
TCP
Category
Registered
Service
nim-wan
What is port 6421?
Port 6421/TCP is a Registered port, registered with IANA for specific applications. It is associated with the nim-wan service.
NIM_WAN
Useful commands
nmapnmap -p 6421 -sV example.comnetcatnc -zv example.com 6421curlcurl -v http://example.com:6421/telnettelnet example.com 6421bash(echo > /dev/tcp/example.com/6421) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 6421/tcpDeny
sudo ufw deny 6421/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 6421 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 6421 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=6421/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 6421" dir=in action=allow protocol=TCP localport=6421Security 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- Outdated versions with vulnerabilities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 6421/TCP?
Port 6421/TCP is associated with the nim-wan service. NIM_WAN
Is it safe to expose port 6421 to the Internet?
It depends on the service and configuration. Port 6421 (nim-wan) 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 6421 is open?
You can use nmap: `nmap -p 6421 -sV example.com`, netcat: `nc -zv example.com 6421`, or the bash command: `(echo > /dev/tcp/example.com/6421) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 6421 on my firewall?
On Linux with UFW: `sudo ufw allow 6421/tcp` (open) or `sudo ufw deny 6421/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 6421 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 6421" dir=in action=allow protocol=TCP localport=6421`.
What applications and services use port 6421?
Port 6421/TCP is used by the nim-wan service. Specific uses depend on the software and configuration. Check our related tools section for more information.