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Networking

Practical home networking guides covering IP addressing, VLANs, routing, switching, Wi-Fi, firewalls, and secure remote access. Each article focuses on usable configurations, troubleshooting, and trade-offs for stable homelab and small-network environments.

A bright editorial home interior showing a Wi-Fi router on an open shelf with signal waves interacting with walls, a mirror, and nearby objects.
Sep 13, 2026H.W. Crestwood

Router Placement 101: The Physics of Obstacles, Mirrors, and Antenna Orientation

A bright editorial home-network scene showing an ISP gateway and a second router creating two layered NAT boundaries.
Sep 8, 2026H.W. Crestwood

Double NAT Explained: Why It Happens and How to Fix It Without Losing Your Mind

A bright editorial network scene showing a managed switch with one subtle untagged trunk path separated from several tagged VLAN paths.
Aug 31, 2026H.W. Crestwood

Native VLANs Explained: Why You Should Change Default VLAN 1

A bright editorial Wi-Fi scene showing one access point serving several devices with subtle separation between the clients.
Aug 22, 2026H.W. Crestwood

Wireless Isolation: Protecting Devices on the Same Wi-Fi Network

A clean firewall management interface using named host, network, and port groups to simplify a large ruleset.
Aug 20, 2026H.W. Crestwood

Alias Creation in Firewalls: Managing Hundreds of Rules Cleanly

A bright editorial home-network scene showing an older router repurposed as a Wi-Fi access point with a subtle secondary wireless bridge path.
Aug 14, 2026H.W. Crestwood

Bridge Mode vs. AP Mode: How I Use Old Routers as Access Points

A dark editorial home-network scene showing a modest router becoming more capable and intentional after an OpenWrt-style upgrade.
Aug 8, 2026H.W. Crestwood

Why OpenWrt Made Me Respect Cheap Routers More Than I Expected

A dark editorial home-network scene showing one central firewall appliance bringing order to several segmented network paths.
Aug 8, 2026H.W. Crestwood

Why I Chose OPNsense for My Home Network

A dark editorial home-network scene showing local switched paths and one higher routing decision layer between VLAN zones.
Aug 8, 2026H.W. Crestwood

Layer 2 vs. Layer 3 Switching in Home Networks: Where to Route Traffic

A dark editorial switch scene showing one simple untagged edge path and one tagged trunk link carrying multiple VLAN paths.
Aug 8, 2026H.W. Crestwood

Untagged vs. Tagged Ports: The Trunking Concepts That Confuse Everyone

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