Ubuntu Server Ports & Configuration Reference

High-performance HTTP server, reverse proxy, and load balancer. Event-driven architecture, low memory footprint.

Most widely used web server. Process/thread-based, highly extensible with modules, .htaccess support.

Modern web server with automatic HTTPS. Written in Go, simple Caddyfile config, built-in Let's Encrypt.

Lightweight, fast web server optimized for high-performance environments. Low memory usage.

Java Servlet container and web server. Runs Java web applications (WAR files).

Oracle's MySQL relational database. Most popular open-source RDBMS.

MySQL fork by original MySQL developers. Drop-in MySQL replacement with additional features.

Advanced open-source relational database. ACID compliant, extensible, excellent for complex queries.

Document-oriented NoSQL database. Stores data in flexible JSON-like documents.

Serverless, file-based SQL database. Zero configuration, embedded database for applications.

Latest stable PHP with FPM. JIT improvements, typed class constants, json_validate(), Randomizer additions.

PHP 8.2 with readonly classes, DNF types, null/false standalone types, random extension.

PHP 8.1 with enums, fibers, readonly properties, intersection types, never return type.

PHP 8.0 with JIT, union types, named arguments, attributes, match expression. EOL November 2023.

PHP 7.4 with typed properties, arrow functions, preloading. EOL November 2022.

In-memory data structure store. Used as database, cache, message broker. Supports strings, hashes, lists, sets, sorted sets.

High-performance distributed memory caching system. Simple key-value store, no persistence.

HTTP accelerator and reverse proxy cache. Extremely fast, uses VCL for configuration.

Fast, secure Mail Transfer Agent (MTA). Sends and receives email via SMTP.

IMAP and POP3 server for email retrieval. Handles mailbox storage and user authentication.

DKIM signing and verification daemon for email authentication.

Very Secure FTP Daemon. Lightweight, secure FTP server.

Highly configurable FTP server with Apache-like configuration syntax.

SSH server with built-in SFTP support. Most secure file transfer method.

Most widely used DNS server. Authoritative and recursive resolver.

Lightweight DNS forwarder and DHCP server. Good for small networks and development.

Validating, recursive, caching DNS resolver. Lightweight and secure.

User-friendly frontend for iptables. Simple command-line interface.

Modern packet filtering framework replacing iptables. Unified interface for IPv4/IPv6.

Intrusion prevention - bans IPs with too many failed auth attempts. Works with many services.

Classic Linux packet filtering. Still widely used, being replaced by nftables.

Open-source antivirus engine. Scans for malware, viruses, trojans.

Scans for rootkits, backdoors, and local exploits.

Security auditing tool. Performs system hardening assessment and compliance testing.

Mandatory Access Control (MAC) security system. Restricts program capabilities.

Advanced Intrusion Detection Environment. Detects file system changes.

Real-time performance monitoring. Beautiful dashboards, zero configuration.

Time-series database and monitoring system. Pull-based metrics collection, powerful PromQL.

Analytics and visualization platform. Creates dashboards from multiple data sources.

Enterprise monitoring solution. Monitors networks, servers, VMs, cloud services.

Industry-standard IT infrastructure monitoring. Monitors hosts, services, and network.

Container platform. Build, run, and manage containerized applications.

Daemonless container engine. Docker-compatible, rootless by default.

Industry-standard container runtime. Used by Docker and Kubernetes.

System container and VM manager. Full Linux systems in containers.

High-performance TCP/HTTP load balancer. Industry standard for high-availability.

Modern HTTP reverse proxy and load balancer. Auto-discovery with Docker, K8s, etc.

Nginx configured as reverse proxy/load balancer. Versatile and widely used.

Automatic HTTPS certificate management. Official Let's Encrypt client.

Pure shell ACME client. Supports Let's Encrypt, ZeroSSL, and other CAs.

Fast, versatile file copying tool. Supports incremental transfers, compression.

Deduplicating backup with compression and encryption. Space-efficient incremental backups.

Fast, secure backup program. Supports many backends (local, S3, SFTP, etc.).

Encrypted bandwidth-efficient backup using rsync algorithm. GPG encryption.

Process control system. Manages long-running processes, auto-restart on failure.

Production process manager for Node.js. Clustering, load balancing, monitoring.

System and service manager. Default init system for Ubuntu. Manages services, timers, mounts.

Distributed search and analytics engine. Part of Elastic Stack (ELK).

AWS fork of Elasticsearch 7.10. Open source search and analytics suite.

Lightning-fast search engine. Typo-tolerant, instant search for end-users.

Feature-rich message broker. Supports AMQP, MQTT, STOMP. High availability, clustering.

Distributed event streaming platform. High-throughput, fault-tolerant message queue.

Redis used as message broker with Pub/Sub or Streams. Lightweight MQ solution.

Distributed version control system. Industry standard for source code management.

CI/CD runner for GitLab. Executes pipeline jobs. Supports Docker, shell, K8s executors.

Lightweight self-hosted Git service. Similar to GitHub/GitLab but minimal resources.

Interactive process viewer. Visual alternative to top with better interface.

NCurses Disk Usage. Interactive disk usage analyzer with ncurses interface.

Command-line tool for transferring data with URLs. Supports many protocols.

Network downloader. Supports HTTP, HTTPS, FTP. Recursive downloading.

Command-line JSON processor. Filter, transform, and query JSON data.

Powerful text editor. Modal editing, highly configurable.

Simple text editor. Beginner-friendly, easy to use.

Legacy network utilities. Includes ifconfig, netstat, route (use ip/ss instead).

Terminal multiplexer. Multiple sessions, detach/reattach, split panes.

Display directories as trees. Visual directory structure.

Extract ZIP archives.