How to reset Firewall, which is blocking Remote Desktop?

[Tapper]

Hi. I am able to login to all the Macs in my house with Apple Remote Desktop, except for one. For some reason a 2020 MacBook Air is not letting me login unless I turn OFF the Firewall. Puzzling since the correct apps are allowed per below screenshot. The only solution I can conjure is to reset the Firewall settings to default. Anybody know how to do that or have another idea?

 

[bogdanw]

Firewall settings are saved in /Library/Preferences/com.apple.alf.plist
You can turn off the Firewall, close System Preferences, delete the file (com.apple.alf.plist) and turn the Firewall back on.

From Terminal, Firewall can be managed with /usr/libexec/ApplicationFirewall/socketfilterfw
Examples
/usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate
/usr/libexec/ApplicationFirewall/socketfilterfw --listapps
/usr/libexec/ApplicationFirewall/socketfilterfw --help

 

[Tapper]

Thank you bogdanw. I deleted the pref file and rebooted but still can't remote into the Mac when Firewall is turned on. Any troubleshooting advice is welcome.

 

[svenmany]

Have you tried toggling Remote Management sharing off and on? And, since I'm superstitious, reboot between the two.

Years ago I used to get incorrect entries in the allowed applications section of the firewall panel.

 

[Tapper]

Have you tried toggling Remote Management sharing off and on? And, since I'm superstitious, reboot between the two.

Years ago I used to get incorrect entries in the allowed applications section of the firewall panel.

OMG, that worked! Much appreciated!