Port 5432 — PostgreSQL

TCP · Port 5432/TCP is used for PostgreSQL, a popular open-source relational database management system. This port is responsible for handling client connections and transmitting data between the client and server. As a critical component of many web applications, securing this port is essential to prevent unauthorized access and data breaches.

Port Number: 5432
Service Name: PostgreSQL
Protocol: TCP
Common Software: postgres

Security Notes

Review IANA registry for port 5432 usage. Apply principle of least privilege - only open ports that are required.

FAQ

What is port 5432 used for?

Port 5432 is used for PostgreSQL. Port 5432/TCP is used for PostgreSQL, a popular open-source relational database management system. This port is responsible for handling client connections and transmitting data between the client and server. As a critical component of many web applications, securing this port is essential to prevent unauthorized access and data breaches. Common software: postgres.

Is port 5432 dangerous to leave open?

Review IANA registry for port 5432 usage. Apply principle of least privilege - only open ports that are required.

How do I check if port 5432 is open?

Use nmap: nmap -p 5432 <target> or check locally: ss -tlnp | rg 5432