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Port 5432PostgreSQL

PostgreSQL is a powerful, open-source object-relational database system known for its reliability, feature robustness, and strong compliance with industry standards. It supports advanced data types and performance optimization features, making it a popular choice for a wide range of applications, from web and mobile backends to enterprise data warehousing..

inDatabases
transport
tcp · udp

2 transports registered

in transit
cleartext

payload readable on path

assignment
official

registered with iana

risk
4/10

caution

lookups
10,764

rank 405 of 993 · top 41%

Technical Details

what runs on :5432

PostgreSQL Overview

PostgreSQL is an advanced, open-source object-relational database management system (ORDBMS) that provides enterprise-class features such as multi-version concurrency control (MVCC), point-in-time recovery, tablespaces, asynchronous replication, and extensive support for procedural languages. It adheres closely to the SQL standard while offering many modern capabilities beyond SQL compliance.

Protocol and Communication

By default, PostgreSQL communicates over TCP port 5432 for client-server interaction, supporting both plaintext and SSL-encrypted connections depending on configuration. The communication protocol involves startup message exchanges, authentication negotiation, query passing, and data transfer. Besides TCP, PostgreSQL's use of UDP is uncommon and usually environment-specific or related to extensions, hence SCTP is not typically applicable.

Use Cases and Deployment

PostgreSQL is deployed in diverse scenarios such as transactional systems, geospatial databases (using PostGIS), analytics platforms, and cloud-native applications, owing to its extensibility, compliance, strong data integrity, and support for large, concurrent workloads. Its driver ecosystem enables integration across programming languages and platforms.

Security Information

exposure of :5432

risk score

4/ 10caution

worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.

databases averages 4.0 across 58 ports — this one sits level with it.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

Common Vulnerabilities:

  • Weak Authentication: Poor password policies may expose the database to brute-force attacks.
  • Unencrypted Traffic: Lack of SSL encryption can result in interception and data breaches.
  • SQL Injection: Vulnerable client applications may expose the PostgreSQL backend via injection attacks.
  • Privilege Escalation: Improper role and permission management can allow lateral or unauthorized data access.
  • Outdated Versions: Using unpatched PostgreSQL versions may expose known vulnerabilities.

Mitigations:

  • Enforce strong, rotating passwords and use role-based access control.
  • Enable SSL to encrypt client-server communication.
  • Regularly update PostgreSQL to the latest security release.
  • Employ network segmentation and firewalls to limit connection sources.
  • Implement input validation and prepared statements in applications to prevent SQL injection.
  • Enable logging and audit mechanisms for suspicious activities.

Related Ports

all 58 in databases →

the 8 most looked-up other ports in databases — 58 ports carry that label.

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risk mix of the 8 listed

  • caution100%

1 of 8 encrypted