Port 4868
phrelay · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | phrelay |
Frequently asked questions
What is port 4868 used for?
Port 4868 is registered with the IANA for phrelay (TCP/UDP). Description: Photon Relay.
Is port 4868 a well-known port?
No. Port 4868 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 4868 is open?
Locally on Linux with ss -tulpn | grep ':4868\b', on Windows with netstat -ano | findstr :4868. To test a remote host use Test-NetConnection <host> -Port 4868 in PowerShell or nc -zv <host> 4868 on Linux/macOS.
How do I open port 4868 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 4868/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4868/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4868" -Direction Inbound -Protocol TCP -LocalPort 4868 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | phrelay | Photon Relay |
| UDP | phrelay | Photon Relay |