Port 5432 is used by PostgreSQL Database (PostgreSQL). PostgreSQL relational database. Popular with Python and modern web applications. Used by many SaaS platforms and data applications.
What Does an Open Port 5432 Mean?
A PostgreSQL database is exposed. Like MySQL, database ports should never be internet-facing. Restrict to localhost and use SSH tunnels for remote access.
This port should NOT be open to the public internet on typical systems. If you see it open, investigate immediately.
Security Risk Level
Critical Risk
How to Check if Port 5432 Is Open
Use the ExamineIP Port Scanner to check if port 5432 is open on any IP address from the public internet. Enter the target IP and select the relevant port preset.
How to Close Port 5432
- Stop the service using port 5432 if you no longer need it
- Add a firewall rule blocking inbound connections on port 5432
- Check your router for port forwarding rules that expose this port
- Run
netstat -ano | findstr :5432(Windows) to see which process is using it
Related Ports
PostgreSQL is related to: {implode(‘, ‘, Array)}
Protect Your Open Ports
If you need services like remote access, use a VPN to create a private encrypted tunnel instead of exposing ports directly to the internet. A VPN also hides your real IP address so port scanners cannot identify your device. Try PureVPN or IPVanish.