|What ports you expect to be open???|
Are you running any software that uses specific ports?
If no software is listening to a specified ports than the port is "closed"
The more ports you have open the higher the possibility you become a target for hacking. That is were a firewall comes in to inspect incoming and outgoing traffic for possible attacks.
The port you mention:
80 = HTTP
135 = DCE ENDPOINT could be a MS service like DHCP, DNS, WINS, ...
139 = NetBIOS session service
445 = MS active directory, SMB shares
more info: https://en.wikipedia.org/wiki/List_...
Now, what is your concern?