4 Systems & infrastructure
Every entry filed under Systems & infrastructure and its subtopics.
What kind of help
What do these mean?
- Beginner
- You are new to this topic.
- Intermediate
- You use it, and want to get better.
- Advanced
- You know it well and need the details.
- Guided project
- Build something small from start to finish, step by step.
- Explains an idea
- Plain words on how something works and why.
- Step by step
- Numbered steps to get one task done.
- Cheat sheet
- Commands and options in a table, to look up fast.
- Fixes an error
- An error message, what it means, and how to solve it.
105 entries match these filters
- 0455 Which security tool does what? A map for beginners A beginner's map of open source security tool families: vulnerability scanners, secret detection, static analysis, host audits, web application testing, network inventory… Beginner · Explains an idea · Any system Article Security resources & detection · Server hardening 15 Oct 2026
- 0434 Wazuh: an open source security platform with agents, SIEM and XDR Wazuh installs a small agent on each server and sends its logs, file changes and package lists to a central manager that… Linux, macOS, Windows Repo Detection & threat hunting · Logs 15 Oct 2026
- 0435 CrowdSec: collaborative intrusion prevention that shares blocklists CrowdSec reads your logs, detects attacks such as brute force and scanning, blocks the source, and shares anonymised reports so that every… Linux, Windows Repo Detection & threat hunting · Firewalls 15 Oct 2026
- 0439 osquery: query your endpoints like a SQL database osquery exposes the state of a Linux, macOS or Windows machine as SQL tables, so you can ask which processes are listening,… Linux, macOS, Windows Repo Detection & threat hunting · Prometheus & Grafana 15 Oct 2026
- 0441 Atomic Red Team: small tests that check whether your detections fire Atomic Red Team is a library of tiny, documented tests, each reproducing one attacker technique from MITRE ATT&CK, that defenders run in… Linux, macOS, Windows Repo Detection & threat hunting · Server hardening 15 Oct 2026
- 0444 Trivy: scan container images, file systems and infrastructure code for known problems Trivy is an open source scanner from Aqua Security that finds known vulnerabilities, misconfigurations and exposed secrets in container images, project directories,… Linux, macOS, Windows Repo Images & registries · Security testing & CTF 15 Oct 2026
- 0445 Gitleaks: find secrets that were committed to a Git repository Gitleaks scans Git history, working trees and arbitrary files for passwords, API keys, tokens and private keys using a library of patterns,… Linux, macOS, Windows Repo Pipelines, runners & hooks · Secrets & access 15 Oct 2026
- 0448 OWASP ZAP: a web application security scanner for testing your own applications Zed Attack Proxy (ZAP) is a free web application security scanner and intercepting proxy maintained under the OWASP umbrella, used to find… Linux, macOS, Windows Repo Security testing & CTF 15 Oct 2026
- 0440 pySigma: the Python library that converts Sigma rules into queries pySigma parses Sigma detection rules and, with backend plugins, converts them into native queries for Splunk, Elastic, Loki, Sentinel and other log… Any system Repo Detection & threat hunting · Logs 15 Oct 2026
- 0449 Nmap: the network mapper for inventorying your own network Nmap is the long-standing open source tool for discovering hosts, open ports, services and operating systems on a network you administer, used… Linux, macOS, Windows Repo DNS, IP addresses & ports · Security testing & CTF 15 Oct 2026
- 0443 Security monitoring explained: IDS, SIEM, EDR and where the logs go A plain language map of the security monitoring tool families, what each one watches, how they feed one another, and where the… Beginner · Explains an idea · Any system Article Detection & threat hunting · Logs 15 Oct 2026
- 0452 age: a small, modern tool for encrypting files age is a simple file encryption tool and Go library with short public keys, SSH key support and no configuration options, designed… Linux, macOS, Windows Repo Secrets & access 15 Oct 2026
- 0450 OWASP Cheat Sheet Series: concise guides to building applications securely The OWASP Cheat Sheet Series is a set of short, topic-focused guides on secure development, from authentication and session management to input… Any system Repo Security resources & detection 15 Oct 2026
- 0453 step-ca: run your own certificate authority for internal TLS and SSH step-ca from Smallstep is an open source certificate authority that issues TLS and SSH certificates for your own infrastructure, with ACME support… Linux, macOS, Windows Repo Linux administration · TLS & certificates 15 Oct 2026
- 0451 awesome-security-hardening: a curated list of hardening guides, benchmarks and tools A maintained awesome list of security hardening guides, checklists, benchmarks and tools for operating systems, services, containers and cloud platforms, kept current… Any system Repo Security resources & detection · Server hardening 15 Oct 2026
- 0454 Scan your own code and containers in CI: Gitleaks, Semgrep and Trivy Set up a GitHub Actions workflow that runs Gitleaks, Semgrep and Trivy on every push of your own project, learn what each… Intermediate · Step by step · Any system Article Pipelines, runners & hooks · Security testing & CTF 15 Oct 2026
- 0426 Sigma: the open detection-rule format for log data The SigmaHQ repository holds the vendor-neutral Sigma rule specification and a community library of thousands of detection rules that converters translate into… Any system Repo Detection & threat hunting · Security resources & detection 15 Oct 2026
- 0427 awesome-security: a curated map of security tools and learning resources A long-running awesome list that groups security software, reading material, courses, conferences and communities by area, from network and endpoint defence to… Any system Repo Security resources & detection 15 Oct 2026
- 0429 PayloadsAllTheThings: a knowledge base organised by web vulnerability class A community-maintained reference that gives each class of web and application weakness its own section with background, detection notes and remediation references,… Any system Repo Security resources & detection · Security testing & CTF 15 Oct 2026
- 0430 HackTricks: a community wiki of security notes A large, continuously updated wiki of security study notes, organised like a textbook and published in GitBook style, used for learning, CTF… Any system Repo Security resources & detection · Security testing & CTF 15 Oct 2026
- 0431 What is a detection rule? Sigma explained for beginners A detection rule describes one kind of suspicious activity in logs. Sigma is the shared, tool-independent way to write such rules, so… Beginner · Explains an idea · Any system Article Alerting & dashboards · Security resources & detection 15 Oct 2026
- 0433 What is an awesome list? Awesome lists are hand-curated link collections on GitHub, one per subject, that follow a shared convention. How they work, how to tell… Beginner · Explains an idea · Any system Article Security resources & detection 15 Oct 2026
- 0400 winget: install and update software from the command line winget is the package manager built into Windows. Search for a program, install it by id, update everything with one command and… Beginner · Step by step · Windows Article Installing languages & tools · Windows administration 15 Oct 2026
- 0401 Windows services, Task Scheduler and event logs from PowerShell Manage the three things Windows administrators touch most: query and restart services, create and inspect scheduled tasks, and search the event logs… Intermediate · Step by step · Windows Article PowerShell · Windows administration 15 Oct 2026
- 0402 Fix: WSL2 has no network or DNS does not resolve apt update hangs, ping works by IP but not by name, or nothing reaches the internet from Ubuntu while Windows is fine.… Intermediate · Fixes an error · Windows Article Windows administration · WSL 15 Oct 2026
- 0403 Work across Windows and WSL: files, paths and running tools from both sides WSL is most useful when Windows and Linux cooperate: open Linux folders in Explorer, run Windows programs from bash, convert paths with… Beginner · Step by step · Windows Article Basics · WSL 15 Oct 2026
- 0404 Find the largest folders on a drive with PowerShell Lists the biggest top-level folders under a path, with file counts and sizes in GB, so you can see where the disk… Beginner · Step by step · Linux, macOS, Windows Script PowerShell · Windows administration 15 Oct 2026
- 0405 Export the list of installed programs to CSV with PowerShell Reads the Windows uninstall registry keys and writes name, version, publisher and install date of every installed program to a CSV file.… Beginner · Step by step · Windows Script PowerShell · Windows administration 15 Oct 2026
- 0406 PowerShell: the cross-platform shell and scripting language The open-source PowerShell 7 project from Microsoft: an object-based shell and automation language that runs on Windows, Linux and macOS and is… Linux, macOS, Windows Repo PowerShell 15 Oct 2026
- 0407 Windows Terminal: tabs, panes and profiles for every shell on Windows Microsoft's modern terminal for Windows, with tabs, split panes, GPU rendering, Unicode and emoji support and profiles for PowerShell, cmd, WSL distributions… Windows Repo Command-line tools · Windows administration 15 Oct 2026
- 0417 Traefik: a reverse proxy that configures itself from Docker and Kubernetes Traefik is an open-source edge router that discovers services from Docker labels, Kubernetes resources and other providers and routes traffic to them,… Linux, macOS, Windows Repo Docker Compose · Web servers & reverse proxies 15 Oct 2026
- 0374 Alert rules that do not wake you for nothing How to design alerts people trust: alert on symptoms not causes, use for durations, separate page from ticket severities, group and inhibit… Intermediate · Explains an idea · Any system Article Alerting & dashboards 15 Oct 2026
- 0391 Install Docker on Linux, macOS and Windows Docker Desktop or Docker Engine? Pick the right one for your OS, install it, and confirm with docker run hello-world. Covers the… Beginner · Step by step · Linux, macOS, Windows Article Docker basics · Installing languages & tools 15 Oct 2026
- 0394 Install kubectl on Linux, macOS and Windows Install the Kubernetes command-line client with curl, a package manager or winget, verify it, and point it at a cluster with a… Beginner · Step by step · Linux, macOS, Windows Article Concepts · Installing languages & tools 15 Oct 2026
- 0396 PowerShell basics: cmdlets, objects and the pipeline PowerShell commands are called cmdlets, they return objects instead of text, and the pipeline passes those objects between them. Once that clicks,… Beginner · Explains an idea · Linux, macOS, Windows Article PowerShell 15 Oct 2026
- 0397 PowerShell cheat sheet The PowerShell cmdlets and patterns you use every day: files, text, processes, services, filtering, exporting, remoting and the operators that trip up… Beginner · Cheat sheet · Linux, macOS, Windows Article PowerShell 15 Oct 2026
- 0398 Install WSL2 and Ubuntu on Windows One command installs the Windows Subsystem for Linux and Ubuntu. Then learn how to pick a distribution, check which WSL version you… Beginner · Step by step · Windows Article Windows administration · WSL 15 Oct 2026
- 0399 Fix: running scripts is disabled on this system (execution policy) PowerShell refuses to run .ps1 files until the execution policy allows it. The usual fix is RemoteSigned for your own user; here… Beginner · Fixes an error · Windows Article PowerShell · Windows administration 15 Oct 2026
- 0370 rclone: rsync for cloud storage, with 70+ providers The rclone repository: a Go command-line tool that copies, syncs, mounts and checks files across local disks and more than 70 cloud… Linux, macOS, Windows Repo Backup tools 15 Oct 2026
- 0355 TLS certificates explained What a certificate proves, who signs it, what the chain and expiry mean, and how to read any site's certificate from the… Beginner · Explains an idea · Any system Article TLS & certificates 15 Oct 2026