Port 911
xact-backup · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | xact-backup |
Frequently asked questions
What is port 911 used for?
Port 911 is registered with the IANA for xact-backup (TCP/UDP). Description: xact-backup.
Is port 911 a well-known port?
Yes. Port 911 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 911 is open?
Locally on Linux with ss -tulpn | grep ':911\b', on Windows with netstat -ano | findstr :911. To test a remote host use Test-NetConnection <host> -Port 911 in PowerShell or nc -zv <host> 911 on Linux/macOS.
How do I open port 911 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 911/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=911/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 911" -Direction Inbound -Protocol TCP -LocalPort 911 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | xact-backup | xact-backup |
| UDP | xact-backup | xact-backup |