Port 5351
pcp · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | pcp |
| Reference | RFC 6887 |
Frequently asked questions
What is port 5351 used for?
Port 5351 is registered with the IANA for pcp (TCP/UDP). Description: Reserved; Port Control Protocol.
Is port 5351 a well-known port?
No. Port 5351 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 5351 is open?
Locally on Linux with ss -tulpn | grep ':5351\b', on Windows with netstat -ano | findstr :5351. To test a remote host use Test-NetConnection <host> -Port 5351 in PowerShell or nc -zv <host> 5351 on Linux/macOS.
How do I open port 5351 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 5351/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=5351/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 5351" -Direction Inbound -Protocol TCP -LocalPort 5351 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | – | Reserved |
| UDP | pcp | Port Control Protocol |