HOLTZWEB

open source tools  ·  respecting your freedom  ·  no proprietary systems

01 / 05  ·  Android

Auditing Android Network Traffic

What is your phone actually sending?

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01 — Android Auditing

From TrackerControl on F-Droid to Magisk root, LSPosed, and Inspeckage — the full spectrum of Android network auditing. Block trackers, decrypt HTTPS, and bypass certificate pinning on any app.

TrackerControl Magisk LSPosed Inspeckage PCAPdroid
Launch →
02 / 05  ·  All Platforms

Monitor App Connections

You are a hose spewing data.

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02 — Per-App Firewalls

Per-app outbound firewalls for every platform. TrackerControl on Android, WFC on Windows, OpenSnitch on Linux, Little Snitch and Radio Silence on macOS. See who's calling home and cut them off.

Windows macOS Linux Android OpenSnitch
Launch →
03 / 05  ·  Network Layer

Network Monitoring

What slips through after you've firewalled your devices?

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03 — The Router Sees All

ntopng, OPNsense, Suricata IDS/IPS, DNS blocklists, and IP blocklists — the router sees everything. Your smart TV has a lot of opinions about your viewing habits.

OPNsense ntopng Suricata DNS Blocklists
Launch →
04 / 05  ·  Beyond the Router

Secure Networks Outside Your LAN

When data leaves your network, how do you protect it?

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04 — Every Exit Strategy

VPNs, VPN-over-port-53, Tor, I2P, Lokinet, XRAY Trojan (your VPN is a website), mesh networks, and Tor hidden services with vanity .onion addresses. Every exit strategy, every threat model.

VPN / Tor XRAY Port 53 .onion Mesh
Launch →
05 / 05  ·  Foundation

Open Source Home Network

The foundation everything else runs on.

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05 — Build Your Stack

OpenWRT with DSA VLANs, SSID isolation, OpenNDS captive portals, and rotating emoji SSIDs — then OPNsense for firewalling, HAProxy, WireGuard, and Suricata. Build it once, own it forever.

OpenWRT OPNsense WireGuard HAProxy Suricata
Launch →
INFO  ·  About the Author

MarcusHoltz
@ Holtzweb

Homelab tinkerer. Open source absolutist.

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∞ — Find More

All configs, write-ups, and repos from this series live on the blog and GitHub. Everything is reproducible, documented, and actually tested on real hardware.

blog.holtzweb.com github/MarcusHoltz open source