Network Fundamentals
Practical guides for the person running IT at a small business. No prior networking experience required — just plain English explanations of the concepts that matter.
Foundations
Subnetting Basics: How IP Address Ranges Work
What a subnet is, how CIDR notation works, and how to read network addresses — no prior experience needed.
Read articlePrivate vs Public IP Addresses
The RFC 1918 private ranges, why they exist, and how NAT lets your whole office share one public IP.
Read articleVariable Length Subnet Masking (VLSM)
Carve an address space into subnets of different sizes to match what each network segment actually needs.
Read articleInfrastructure Services
How Routing Works: Getting Packets from A to B
What a router does, how routing tables work, and why packets sometimes need to cross multiple hops.
Read articleWhat is DHCP? Dynamic IP Assignment Explained
How devices get their IP addresses automatically, when to use static IPs instead, and what DHCP relay does.
Read articleWhat is DNS? Name Resolution for Networks
How DNS translates names to IPs, what record types you need to know, and why internal DNS matters.
Read articleReady to manage your IP space properly?
getIPAM gives you a structured home for every subnet, address, and device — so you stop losing track in spreadsheets.
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