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network: enable MAC randomization for wifi connections by default

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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
This commit is contained in:
Marek Marczykowski-Górecki 2021-03-27 15:56:56 +01:00
parent 78c37a7536
commit 8306013cbf
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GPG Key ID: 063938BA42CFA724
4 changed files with 9 additions and 0 deletions
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1
Makefile
View File

@ -188,6 +188,7 @@ install-networkmanager:
install -d $(DESTDIR)/usr/lib/NetworkManager/conf.d
install -m 0644 network/nm-30-qubes.conf $(DESTDIR)/usr/lib/NetworkManager/conf.d/30-qubes.conf
install -m 0644 network/nm-31-randomize-mac.conf $(DESTDIR)/usr/lib/NetworkManager/conf.d/31-randomize-mac.conf
install -d $(DESTDIR)/etc/xdg/autostart
install -m 0755 network/show-hide-nm-applet.sh $(DESTDIR)$(LIBDIR)/qubes/

1
debian/qubes-core-agent-network-manager.install vendored
View File

@ -2,6 +2,7 @@ etc/NetworkManager/dispatcher.d/30-qubes-external-ip
etc/NetworkManager/dispatcher.d/qubes-nmhook
etc/xdg/autostart/00-qubes-show-hide-nm-applet.desktop
usr/lib/NetworkManager/conf.d/30-qubes.conf
usr/lib/NetworkManager/conf.d/31-randomize-mac.conf
usr/lib/qubes/network-manager-prepare-conf-dir
usr/lib/qubes/qubes-fix-nm-conf.sh
usr/lib/qubes/show-hide-nm-applet.sh

6
network/nm-31-randomize-mac.conf Normal file
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@ -0,0 +1,6 @@
[device]
wifi.scan-rand-mac-address=yes
[connection]
wifi.cloned-mac-address=stable
connection.stable-id=${CONNECTION}/${BOOT}

1
rpm_spec/core-agent.spec.in
View File

@ -822,6 +822,7 @@ rm -f %{name}-%{version}
/etc/NetworkManager/dispatcher.d/qubes-nmhook
/etc/xdg/autostart/00-qubes-show-hide-nm-applet.desktop
/usr/lib/NetworkManager/conf.d/30-qubes.conf
/usr/lib/NetworkManager/conf.d/31-randomize-mac.conf
/usr/lib/qubes/network-manager-prepare-conf-dir
/usr/lib/qubes/qubes-fix-nm-conf.sh
/usr/lib/qubes/show-hide-nm-applet.sh