Port 6817
pentbox-sim · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | pentbox-sim |
| Registered | 2009-11-04 |
Frequently asked questions
What is port 6817 used for?
Port 6817 is registered with the IANA for pentbox-sim (TCP/UDP). Description: PenTBox Secure IM Protocol; Reserved.
Is port 6817 a well-known port?
No. Port 6817 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 6817 is open?
Locally on Linux with ss -tulpn | grep ':6817\b', on Windows with netstat -ano | findstr :6817. To test a remote host use Test-NetConnection <host> -Port 6817 in PowerShell or nc -zv <host> 6817 on Linux/macOS.
How do I open port 6817 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 6817/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=6817/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 6817" -Direction Inbound -Protocol TCP -LocalPort 6817 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | pentbox-sim | PenTBox Secure IM Protocol |
| UDP | – | Reserved |