diff --git a/docs/privacy/anonymizing-your-mac-address.md b/docs/privacy/anonymizing-your-mac-address.md index d4424b6..bbe583b 100644 --- a/docs/privacy/anonymizing-your-mac-address.md +++ b/docs/privacy/anonymizing-your-mac-address.md @@ -67,44 +67,3 @@ In any case it makes sense to double check your results on e.g. your home router If you want to decide per connection, `NetworkManager` also provides an option to not send the hostname: Edit the saved connection files at `/rw/config/NM-system-connections/*.nmconnection` and add the `dhcp-send-hostname=false` line to both the `[ipv4]` and the `[ipv6]` section. - -### Randomize the hostname - -Alternatively you may use the following code to assign a random hostname to a VM during each of its startup. Please follow the instructions mentioned in the beginning to properly install it. - -```.bash -#!/bin/bash -set -e -o pipefail -# -# Set a random hostname for a VM session. -# -# Instructions: -# 1. This file must be placed and made executable (owner: root) inside the template VM of your network VM such that it will be run before your hostname is sent over a network. -# In a Fedora template, use `/etc/NetworkManager/dispatcher.d/pre-up.d/00_hostname`. -# In a Debian template, use `/etc/network/if-pre-up.d/00_hostname`. -# 2. Execute `sudo touch /etc/hosts.lock` inside the template VM of your network VM. -# 3. Execute inside your network VM: -# `sudo bash -c 'mkdir -p /rw/config/protected-files.d/ && echo -e "/etc/hosts\n/etc/hostname" > /rw/config/protected-files.d/protect_hostname.txt'` - - -#NOTE: mv is atomic on most systems -if [ -f "/rw/config/protected-files.d/protect_hostname.txt" ] && rand="$RANDOM" && mv "/etc/hosts.lock" "/etc/hosts.lock.$rand" ; then - name="PC-$rand" - echo "$name" > /etc/hostname - hostname "$name" - #NOTE: NetworkManager may set it again after us based on DHCP or /etc/hostname, cf. `man NetworkManager.conf` @hostname-mode - - #from /usr/lib/qubes/init/qubes-early-vm-config.sh - if [ -e /etc/debian_version ]; then - ipv4_localhost_re="127\.0\.1\.1" - else - ipv4_localhost_re="127\.0\.0\.1" - fi - sed -i "s/^\($ipv4_localhost_re\(\s.*\)*\s\).*$/\1${name}/" /etc/hosts - sed -i "s/^\(::1\(\s.*\)*\s\).*$/\1${name}/" /etc/hosts -fi -exit 0 -``` -Assuming that you're using `sys-net` as your network VM, your `sys-net` hostname should now be `PC-[number]` with a different `[number]` each time your `sys-net` is started. - -Please note that the above script should _not_ be added to [/rw/config/rc.local](https://www.qubes-os.org/doc/config-files/)) as that is executed only _after_ the network fully started.