Configure firewalld with Bitwarden installed

Hello,

I installed Bitwarden, it automatically opened web access to the server after installation without any restrictions. Usually I make a rule on firewalld to allow access to the web server and restrict it to certain subnets that are allowed to use that server.
By default, the Bitwarden installation allows https access from all subnets. I can’t find where Bitwarden modified the firewall. I can’t find it in firewalld.
How to restrict https access to a chosen subnet on Debian 12 OS firewall after installing Bitwarden?

Usually I have to make this command. For some unknown reason, Bitwarden has removed all restrictions from the pre-installed firewalld.

sudo firewall-cmd --add-rich-rule ‘rule family=“ipv4” service name=“http” source address=“10.10.20.0/24” accept’ --permanent
sudo firewall-cmd --add-rich-rule ‘rule family=“ipv4” service name=“https” source address=“10.10.20.0/24” accept’ --permanent

I greatly appreciate your help.

sinfo