Default firewall rules with firewalld are differnt to the ones with ufw

[Cristian Morales Vega]

I'm no expert on firewalls. But coming from Fedora, I found ufw more complicated than firewalld. So I did run "apt remove ufw" and "apt install firewalld" to replace ufw with firewalld, which I'm more familiar with.
I don't expect this operation to change the actual firewall rules, but I found it did. Not by some detailed analysis of the rules, but by the fact that when using firewalld my printer is not detected.

I have never installed any driver. AFAIK my printer can be used, as any half modern one, via "IPP Everywhere". So it would seem the default firewalld configuration differs from the ufw, at the very least, in it breaking "IPP Everywhere" support.

That same printer was detected from Fedora, using firewalld. For referece: https://src.fedoraproject.org/rpms/firewalld/tree/rawhide