Cybersecurity@sh.itjust.worksbyNikolas5476@lemmy.world
1 day

Local area network anonymity hardening tool for Linux

English

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.
5
    • redsand@infosec.pubEnglish
      15 minutes

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

    • It_is_gaslighting@discuss.tchncs.deEnglish
      1 day

      So for educational purposes I have a few questions: what is a suitable use-case for this: a hotel LAN? Guest wifi at home? Or what is the perfect use-case?

      • Nikolas5476@lemmy.worldEnglish
        1 day

        The perfect use case is untrusted public networks where you want to avoid tracking. It’s just another layer of defense and i highly recommend using a VPN alongside this.

        • It_is_gaslighting@discuss.tchncs.deEnglish
          1 day

          Thanks for clarifying. I use tailscale and set up my home LAN as exit node. So this would harden the steps before the wireguard connection buildup (within tailscale VPN), when connecting to a public network, right? Now lets assume I have an other VPN provider, do you think it’s better to use it directly (choose between tailscale and the other VPN) or chained after the tailscale exit node? Sorry if being a bit off topic.

          • Nikolas5476@lemmy.worldEnglish
            1 day

            LANGhost hardens exactly the window between “network interface comes up” and “WireGuard tunnel is established.” Without it, your real MAC, hostname, and DHCP identifiers are visible to the public network operator during that bootstrap phase, before any application traffic is protected by the tunnel. I recommend not adding unnecessary complexity by chaining Tailscale and another VPN. A second VPN would only add value if you specifically need to hide your home IP from destination servers.