All ports
Port6243/TCP
jeol-nsdtp-3Port
6243
Protocol
TCP
Category
Registered
Service
jeol-nsdtp-3
What is port 6243?
Port 6243/TCP is a Registered port, registered with IANA for specific applications. It is associated with the jeol-nsdtp-3 service.
JEOL Network Services Data Transport Protocol 3
Useful commands
nmapnmap -p 6243 -sV example.comnetcatnc -zv example.com 6243curlcurl -v http://example.com:6243/telnettelnet example.com 6243bash(echo > /dev/tcp/example.com/6243) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 6243/tcpDeny
sudo ufw deny 6243/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 6243 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 6243 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=6243/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 6243" dir=in action=allow protocol=TCP localport=6243Security 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- Outdated versions with vulnerabilities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 6243/TCP?
Port 6243/TCP is associated with the jeol-nsdtp-3 service. JEOL Network Services Data Transport Protocol 3
Is it safe to expose port 6243 to the Internet?
It depends on the service and configuration. Port 6243 (jeol-nsdtp-3) 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 6243 is open?
You can use nmap: `nmap -p 6243 -sV example.com`, netcat: `nc -zv example.com 6243`, or the bash command: `(echo > /dev/tcp/example.com/6243) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 6243 on my firewall?
On Linux with UFW: `sudo ufw allow 6243/tcp` (open) or `sudo ufw deny 6243/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 6243 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 6243" dir=in action=allow protocol=TCP localport=6243`.
What applications and services use port 6243?
Port 6243/TCP is used by the jeol-nsdtp-3 service. Specific uses depend on the software and configuration. Check our related tools section for more information.