Port 17221
avdecc · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | avdecc |
| Registered | 2011-11-01 |
Frequently asked questions
What is port 17221 used for?
Port 17221 is registered with the IANA for avdecc (TCP/UDP). Description: IEEE 1722.1 AVB Discovery, Enumeration, Connection management, and Control.
Is port 17221 a well-known port?
No. Port 17221 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 17221 is open?
Locally on Linux with ss -tulpn | grep ':17221\b', on Windows with netstat -ano | findstr :17221. To test a remote host use Test-NetConnection <host> -Port 17221 in PowerShell or nc -zv <host> 17221 on Linux/macOS.
How do I open port 17221 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 17221/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=17221/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 17221" -Direction Inbound -Protocol TCP -LocalPort 17221 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | avdecc | IEEE 1722.1 AVB Discovery, Enumeration, Connection management, and Control |
| UDP | avdecc | IEEE 1722.1 AVB Discovery, Enumeration, Connection management, and Control |