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Local area network anonymity hardening tool for Linux (lemmy.world)

submitted 2 days ago by Nikolas5476@lemmy.world to c/cybersecurity@sh.itjust.works

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Source code and details: https://github.com/nikolas-trey/LANGhost

Description

LANGhost is a Linux anonymity hardening layer for systems managed by NetworkManager. It minimizes identity leakage across multiple network surfaces during connection setup, enforces privacy-focused connection configurations, and implements a fail‑closed mechanism that terminates or isolates connectivity when runtime checks detect unsafe conditions.

What it does

Randomizes MAC policy before activation.
Assigns a randomized DHCP hostname before activation.
Applies a per-activation identity seed for NetworkManager-derived identifiers.
Hardens DHCP identity behavior.
Enables stronger IPv6 privacy behavior and stable-privacy address generation.
Disables local discovery features that can expose system identity on managed links.
Quarantines interfaces with tc drop filters during setup.
Verifies runtime state after activation and triggers a kill switch on failure.

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[–] redsand 1 points 1 day ago (1 children)

Does tails do all of this already? If not they would find this interesting. Maybe Kali too

[–] Nikolas5476@lemmy.world 2 points 1 day ago

For Tails, there's no gap to fill because it already handles MAC randomization and DHCP hardening as part of a purpose-built amnesic system where no identity persists across sessions. Kali is a persistent, general-purpose Linux system managed by NetworkManager, which is exactly LANGhost's target environment. Out of the box Kali does nothing special about MAC randomization, DHCP hostname, IAID, or LLMNR/mDNS. A penetration tester connecting to a client network or a hotel LAN during an engagement leaks the same identifiers any stock Ubuntu machine would. LANGhost would be a genuine improvement for that use case.