Contents of /etc/master.passwd [SOLVED]
~~_I just noticed that in my test pfsense 2.1 /etc/master.passwd there's a user "pop" with a seemingly active password, but no shell:
pop:$1$jG58XXXXXXXXXXXXXXXX0mR4.:68:6::0:0:Post Office Owner:/nonexistent:/usr/sbin/nologin
unbound::59:1::0:0:unbound dns resolver:/nonexistent:/usr/sbin/nologin
I checked my config.xml and the only user/pass there is the one for admin/root.
Edit: Never mind, false alarm, I just re-installed the latest pfsense 2.1-BETA iso from scratch on a new VM, and the only two accounts with passwd are root & admin, as it was supposed to. Apparently I must have changed "pop" account's passwd manually sometime during the past 10 months of using that 2.1 VM while upgrading it in-place from the webGUI.
Seemingly password changes to the FreeBSD passwd file are preserved across dozens of pfsense firmware upgrades.
that's a default FreeBSD account