Port 380
is99s · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | is99s |
Frequently asked questions
What is port 380 used for?
Port 380 is registered with the IANA for is99s (TCP/UDP). Description: TIA/EIA/IS-99 modem server.
Is port 380 a well-known port?
Yes. Port 380 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.
How do I check whether port 380 is open?
Locally on Linux with ss -tulpn | grep ':380\b', on Windows with netstat -ano | findstr :380. To test a remote host use Test-NetConnection <host> -Port 380 in PowerShell or nc -zv <host> 380 on Linux/macOS.
How do I open port 380 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 380/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=380/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 380" -Direction Inbound -Protocol TCP -LocalPort 380 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | is99s | TIA/EIA/IS-99 modem server |
| UDP | is99s | TIA/EIA/IS-99 modem server |