--- title: #basics — page 3 of 3 description: 52 articles about basics — guides and explainers from the WatchFor team. canonical: https://watchfor.io/blog/tag/basics/page/3 --- [All posts](/blog) # #basics — page 3 Articles tagged "basics". [All](/blog)[Monitoring](/blog/category/monitoring)[Networking](/blog/category/networking)[Performance](/blog/category/performance)[Security](/blog/category/security)[Reliability](/blog/category/reliability)[Email](/blog/category/email)[DevOps](/blog/category/devops)[Engineering](/blog/category/engineering) [All articles](/blog/all) 52 article s · page 3 of 3 [SecurityDec 28, 2025 ## What is a Firewall? A firewall is the gatekeeper that decides which network traffic gets through and which gets blocked. Here's what firewalls do, the main types, and the gotcha they create for monitoring.WatchFor Team3 min read](/blog/what-is-a-firewall)[NetworkingDec 26, 2025 ## What is an IP Address? An IP address is how one machine on the internet finds another — the postal address of the digital world. Here's what it is, the difference between public and private, and the two versions in use.WatchFor Team3 min read](/blog/what-is-an-ip-address)[NetworkingDec 24, 2025 ## What is NAT? (Network Address Translation, explained) NAT is the quiet trick that lets all your home and office devices share a single public IP address. Here's how it works, why it exists, and the headaches it sometimes causes.WatchFor Team3 min read](/blog/nat-explained)[SecurityDec 14, 2025 ## Zero Trust Explained The old security model trusted anyone inside the network. Zero Trust throws that out: trust nothing, verify everything, every time. Here's what it means in practice.WatchFor Team3 min read](/blog/zero-trust-explained)[SecurityDec 12, 2025 ## What is a CVE? Vulnerability basics When a security flaw is found in software, it gets a CVE — a global ID so everyone can track and fix it. Here's what CVEs are, how severity is scored, and how to stay on top of them.WatchFor Team3 min read](/blog/what-is-a-cve)[SecurityDec 10, 2025 ## Secrets Management Explained API keys, passwords and tokens are the keys to your kingdom — and they end up hard-coded, committed to git, and shared in chat far too often. Here's how to handle secrets properly.WatchFor Team3 min read](/blog/secrets-management)[ReliabilityNov 16, 2025 ## Capacity Planning Basics Run out of capacity at the wrong moment and your big day becomes an outage. Capacity planning is how you have the headroom before you need it. Here's the simple version.WatchFor Team3 min read](/blog/capacity-planning)[ReliabilityNov 14, 2025 ## High Availability Explained High availability means designing so that one failure isn't an outage. Here's what HA actually means, the building blocks (redundancy, failover, no single point of failure), and how far to take it.WatchFor Team3 min read](/blog/high-availability)[DevOpsNov 12, 2025 ## Feature Flags Explained Feature flags let you turn functionality on and off at runtime — shipping code safely, releasing gradually, and rolling back instantly without a deploy. Here's how they work and why teams love them.WatchFor Team3 min read](/blog/feature-flags-explained)[DevOpsNov 08, 2025 ## CI/CD Explained CI/CD is the automated pipeline that takes your code from commit to production — testing it, building it, and shipping it without manual drudgery. Here's what the letters mean and why it matters.WatchFor Team3 min read](/blog/ci-cd-explained)[DevOpsNov 06, 2025 ## Infrastructure as Code Explained Infrastructure as Code means defining your servers and cloud resources in version-controlled files instead of clicking through dashboards. Here's what it is and why it transforms reliability.WatchFor Team3 min read](/blog/infrastructure-as-code)[MonitoringNov 02, 2025 ## How to Choose a Monitoring Tool There are dozens of monitoring tools, and the marketing all sounds the same. Here's a practical, vendor-neutral checklist of what actually matters — so you pick the one that fits your needs.WatchFor Team3 min read](/blog/monitoring-tools-how-to-choose) --- Canonical page: https://watchfor.io/blog/tag/basics/page/3 · Site guide: https://watchfor.io/llms.txt