Port 497
retrospect · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | retrospect |
| Modified | 2012-02-02 |
Frequently asked questions
What is port 497 used for?
Port 497 is registered with the IANA for retrospect (TCP/UDP). Description: Retrospect backup and restore service.
Is port 497 a well-known port?
Yes. Port 497 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 497 is open?
Locally on Linux with ss -tulpn | grep ':497\b', on Windows with netstat -ano | findstr :497. To test a remote host use Test-NetConnection <host> -Port 497 in PowerShell or nc -zv <host> 497 on Linux/macOS.
How do I open port 497 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 497/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=497/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 497" -Direction Inbound -Protocol TCP -LocalPort 497 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | retrospect | Retrospect backup and restore service |
| UDP | retrospect | Retrospect backup and restore service |