Homelab Network Readiness

Use this skill before changing a home or small-lab network that mixes VLANs, Pi-hole or another local DNS resolver, firewall rules, and remote VPN access.

This is a planning and review skill. Do not turn it into copy-paste router, firewall, or VPN configuration unless the target platform, current topology, rollback path, console access, and maintenance window are all known.

When to Use

• Preparing to split a flat network into trusted, IoT, guest, server, or management VLANs.
• Moving DHCP clients to Pi-hole, AdGuard Home, Unbound, or another local DNS resolver.
• Adding WireGuard, Tailscale, ZeroTier, OpenVPN, or router-native VPN access.
• Reviewing whether a homelab change can lock the operator out of the gateway, switch, access point, DNS server, or VPN server.
• Turning an informal home-network idea into a staged migration plan with validation evidence.

Safety Rules

• Keep the first answer read-only: inventory, risks, staged plan, validation, and rollback.
• Do not expose gateway admin panels, DNS resolvers, SSH, NAS consoles, or VPN management UIs directly to the public internet.
• Do not provide firewall, NAT, VLAN, DHCP, or VPN commands without a confirmed platform and a rollback procedure.
• Require out-of-band or same-room console access before changing management VLANs, trunk ports, firewall default policies, or DHCP/DNS settings.
• Keep a working path back to the internet before pointing the whole network at a new DNS resolver or VPN route.
• Treat IoT, guest, camera, and lab-server networks as different trust zones until the operator explicitly chooses otherwise.

Required Inventory

Collect this before giving implementation steps:

VLAN And Trust-Zone Plan

Start with intent rather than vendor syntax.

Before recommending VLAN IDs or subnets, confirm:

1. The gateway supports inter-VLAN routing and firewall rules.
2. The switch supports the required tagged and untagged port behavior.
3. The APs can map SSIDs to VLANs.
4. The operator knows which port they are connected through during the change.
5. The management network remains reachable after trunk and SSID changes.

DNS Filtering Readiness

Pi-hole or another local resolver should be introduced as a dependency, not as a single point of failure.

1. Give the resolver a reserved address before using it in DHCP options.
2. Confirm it can resolve public DNS and local home.arpa names.
3. Keep the gateway or a second resolver available as a temporary fallback.
4. Test one client or one VLAN before changing every DHCP scope.
5. Document which networks may bypass filtering and why.
6. Check that blocking rules do not break captive portals, work VPNs, firmware updates, or medical/security devices.

Useful validation evidence:

Client gets expected DHCP lease
Client receives expected DNS resolver
Public DNS lookup succeeds
Local home.arpa lookup succeeds
Blocked test domain is blocked only where intended
Gateway and DNS admin interfaces are not reachable from guest or IoT networks

Remote Access Readiness

For WireGuard-style access, decide what the VPN is allowed to reach before

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