Network Port: 5432
Network Port Reference Guide
Registered Service Name
PostgreSQL Database
Transport Protocol
TCP
Functional Overview
Port 5432 is the standard default port for PostgreSQL object-relational database server engines.
Security Risks & Vulnerabilities
High security target. Unprotected setups invite unauthorized SQL queries, indexing breaches, and downtime. Restrict PostgreSQL server binding via pg_hba.conf rules.
How to audit network port status
1. Scan Open Ports: Use our Port Scanner utility to verify if this port is actively listening on your host.
2. Verify Encryption: Audit the service layer to confirm SSL/TLS is protecting transmission payload.
3. Hardening Rules: Apply the firewall instructions below to shut down unauthorized inbound ports.
UFW Firewall Rules
Allow Command
sudo ufw allow 5432/tcp
Block Command
sudo ufw deny 5432/tcp
iptables Firewall Rules
Allow Command
sudo iptables -A INPUT -p tcp --dport 5432 -s 10.0.0.0/8 -j ACCEPT
Block Command
sudo iptables -A INPUT -p tcp --dport 5432 -j DROP