firewalld ssh restrict

[Anton Matta]

Hi,

I red man firewalld.richlanguage really focussed and some searched webpages
and I really don't know how to restrict ssh with systemd like from 2
sources ok, other not ok?

a.b.c.d > ssh  OK
b.c.d.a > ssh OK
x.x.x.x (everyone else) > REJECT, DROP, whatever.

Do You have any ideas? Thanks for reply. m.