Port 6243
jeol-nsddp-3 and jeol-nsdtp-3 · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | jeol-nsddp-3 and jeol-nsdtp-3 |
| Registered | 2008-04-17 |
Frequently asked questions
What is port 6243 used for?
Port 6243 is registered with the IANA for jeol-nsddp-3 and jeol-nsdtp-3 (TCP/UDP). Description: JEOL Network Services Data Transport Protocol 3; JEOL Network Services Dynamic Discovery Protocol 3.
Is port 6243 a well-known port?
No. Port 6243 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 6243 is open?
Locally on Linux with ss -tulpn | grep ':6243\b', on Windows with netstat -ano | findstr :6243. To test a remote host use Test-NetConnection <host> -Port 6243 in PowerShell or nc -zv <host> 6243 on Linux/macOS.
How do I open port 6243 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 6243/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=6243/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 6243" -Direction Inbound -Protocol TCP -LocalPort 6243 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | jeol-nsdtp-3 | JEOL Network Services Data Transport Protocol 3 |
| UDP | jeol-nsddp-3 | JEOL Network Services Dynamic Discovery Protocol 3 |