Randomization of mac addresses in disposable sys-net

Insurgo · July 20, 2022, 3:42am

Confused.

Qubes 4.1 comes with wifi mac randomization by default.

github.com/QubesOS/qubes-core-agent-linux

network: enable MAC randomization for wifi connections by default

committed 02:56PM - 27 Mar 21 UTC

marmarek

+9 -0

We do have NetworkManager new enough to handle this feature already. Enable both… scan MAC address randomization, and also connection mac address randomization. The later do in a "stable" way - preserving the same MAC _for a connection_, until reboot. This is a safe tradeoff between full random, which breaks some captive portals. The stable MAC is generated separate for each connection, so it also prevents correlation of the same machine between different networks. Do not enable it for wired connections, as those are less often used at random untrusted localizations, but also more often it's desired to get the same IP address each time (having random MAC would make it much harder). QubesOS/qubes-issues#938