Port 9390
otp · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | otp |
| Registered | 2008-12-24 |
Frequently asked questions
What is port 9390 used for?
Port 9390 is registered with the IANA for otp (TCP/UDP). Description: OpenVAS Transfer Protocol; Reserved.
Is port 9390 a well-known port?
No. Port 9390 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 9390 is open?
Locally on Linux with ss -tulpn | grep ':9390\b', on Windows with netstat -ano | findstr :9390. To test a remote host use Test-NetConnection <host> -Port 9390 in PowerShell or nc -zv <host> 9390 on Linux/macOS.
How do I open port 9390 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 9390/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=9390/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 9390" -Direction Inbound -Protocol TCP -LocalPort 9390 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | otp | OpenVAS Transfer Protocol |
| UDP | – | Reserved |