[Samba] Opening "Printers" causes incoming packets from different ports

[Boaz Bezborodko]

When I open the "Printers and Faxes" folder in Windows to view print
queues my firewall gets a bunch of incoming packets from the server each
from an ever increasing port number.  (It is now up to 32840.)  These
are going to local ports 139 and 445. (The netbios ports.)

Is this normal behavior?  Should I be allowing these access to the system?

Thanks in advance