54321
PostgreSQL (Alternate) / Climate Talk
Medium RiskTCP — Database
Port Overview
Port Number
54321
Service Name
PostgreSQL (Alternate) / Climate Talk
Transport Protocol
TCP
Category
Database
Security Risk
Medium
Port Range
Dynamic (49152-65535)
What is Port 54321?
Used as an alternate or development port for PostgreSQL databases in some configurations, particularly Docker-based setups. Also historically assigned to Climate Talk network protocol. Frequently used in development environments to avoid conflicts with the standard port 5432.
TCP
Database
Security Considerations
Port 54321 (PostgreSQL (Alternate) / Climate Talk) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.
Recommendation: Keep the service updated. Monitor logs for unusual activity.