"Disable signed apps from being auto-permitted to listen through firewall" -- broken

[kristovatlas]

On my machine, some (all?) settings written with or without sudo to /Library/Preferences/com.apple.* are overwritten when I logout and log back in.

Consequently this fix doesn't stick for me:
defaults write /Library/Preferences/com.apple.alf allowsignedenabled -bool false

The solution is to write it only for the current user:
defaults write ~/Library/Preferences/com.apple.alf allowsignedenabled -bool false

[taz77]

Confirm the same.

[Eitot]

I suspect it is because allowsignedenabled expects an integer, not a boolean. Accordingly, the correct setting should be:

# defaults write /Library/Preferences/com.apple.alf allowsignedenabled -int 0

Writing to the user domain is not going to work, because firewall settings and exceptions are managed locally, not per user.