Port 2428
ott · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | ott |
Frequently asked questions
What is port 2428 used for?
Port 2428 is registered with the IANA for ott (TCP/UDP). Description: One Way Trip Time.
Is port 2428 a well-known port?
No. Port 2428 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 2428 is open?
Locally on Linux with ss -tulpn | grep ':2428\b', on Windows with netstat -ano | findstr :2428. To test a remote host use Test-NetConnection <host> -Port 2428 in PowerShell or nc -zv <host> 2428 on Linux/macOS.
How do I open port 2428 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 2428/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=2428/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 2428" -Direction Inbound -Protocol TCP -LocalPort 2428 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | ott | One Way Trip Time |
| UDP | ott | One Way Trip Time |