Open ports in Windows 7, firewall, public network, port 445

Question

I selected "public network" in Windows 7. Windows is listening on TCP port 445:

TCP    0.0.0.0:445            WIN7TEST:0             ABHÖREN

The corresponding incoming firewall rule isn't activated (4th column):

When I choose "workplace network" the SMB incoming port 445 rule is still disabled in the advanced windows firewall configuration.

I thought "public network" / "workplace network" and so on is influencing the windows firewall rules!?

Where's the difference between workplace and public network then?

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