In the win7 system settings to share, but had to turn off the firewall

First, it is reproduced https://www.itsk.com/thread-311571-1-1.html, I extracted the essence of
not more than that, the solution is as follows
First, open the "Windows Firewall" in "Control Panel" , then select "advanced settings" and then select "inbound rules."
In the action pane "Operations" or the right of the menu bar, select "New Rule."
Second, increasing the TCP port 139,445 inbound rule
　　1, after clicking the "New Rules", after the new rule interface, select the "port" press "Next";
　　2, this step as long as the "specific local port (S): "back fill port number" 139,445 ", note the comma in the English characters between 139 and 445, but it is not Chinese, and then click" next ";
　　3, using the default in this step," allow connection " then click "Next";
　　4, in this step, for security reasons, will only check the "special" and then click "Next";
　　5. in this step, enter a name for the rule, free to choose a name and description, and I use a concise name: "On a total network
　　 sharing TCP port" and then click "Finish", TCP port 139, 445 of the rules even create a complete open.
Third, increase the UDP 137,138 inbound rule port
　　1, and then click on "New Rules," New Rule screen appears, select the "Port" and click "Next";
　　2, this step is to click "UDP", then in the " specific local ports (S): "back fill port number" 137, 138 ", note the comma in the English characters between 137 and 138, but it is not Chinese, and then click" next ";
　　3, using the default "Allow Connections" and then click "Next" in this step;
　　4, in this step, for security reasons, will only check the "special" and then click "Next";
　　5, this step, enter a name for the rule, free to choose a name and description, and I use a concise name: "On a total network
share UDP port" and then click "Finish", an open UDP ports 137, 138 of the rules even create finished.