5432
PostgreSQL relational database server
PostgreSQL Database
What is port 5432?
Port 5432 is the default port for PostgreSQL, the most feature-rich open-source relational database. It is used by Django, Ruby on Rails, and many modern applications. PostgreSQL supports JSON, full-text search, geospatial data (PostGIS), and strict ACID transactions. It must never be exposed to the internet — always bind to localhost or trusted IPs and place it behind a firewall.
Quick checks
$
nc -zv example.com 5432
$
nmap -p 5432 example.com
$
telnet example.com 5432