1.   Right-click the Start button

2.   Click Search

3.   Type Windows Firewall

Click Search. Type Windows Firewall.

4.   Click Windows Firewall

5.   Click Advanced settings

Click Windows Firewall. Click Advanced settings.

6.   Click Inbound Rules 

7.   Click New Rule

Click Inbound Rules. Click New Rule.

8.   Click Port

9.   Click Next

Click Port. Click Next.

10.                Click either TCP or UDP

11.                Click Specific local ports

Click either TCP or UDP. Click Specific local ports.

12.                Type a port number (In this case, we will open port 1707)

13.                Click Next

Type a port number. Click Next.

14.                Click Allow the connection

15.                Click Next

Click Allow the connection. Click Next.

16.                Click any network types you'd like to allow the connection over

17.                Click Next

Click any network types. Click Next.

18.                Type a name for the rule

19.                Click Finish

Type a name for the rule. Click Finish.

How to close a port in Windows Firewall

1.   Right-click the Start button

2.   Click Search

Right-click the Start button. Click Search.

3.   Type Windows Firewall

4.   Click Windows Firewall

Type Windows Firewall. Click Windows Firewall.

5.   Click Advanced settings

6.   Click Inbound Rules or Outbound Rules

Click Advanced settings. Click Inbound or Outbound Rules.

7.   Click the rule you created

8.   Click the name 

Click the rule. Click the name of the rule.

9.   Click Disable Rule

10.                Click Delete if you want to completely delete the rule

Click Disable Rule. Click Delete.