@Petrushka hello!!
In our firewalld rules we have
services: - ftp - http - mountd - nfs - rpc-bind - tftp ports: - { port: 20048, proto: tcp } # nfs - { port: 20048, proto: udp } # nfs - { port: "35350-36350", proto: udp } # tftp - { port: "49512-65532", proto: udp } # multicast