Sometime you face problem that whether a particular port is open or not for an IPaddress. The reason may be firewall so first disable firewall.
So to determine this do particular steps.
Click on start button of windows.
Click on Run
Type cmd and press enter
Step 4:- you will get command prompt screen type Telnet in command prompt screen
You will get Telnet Prompt.
Step 5: type OPEN IPAddress port
Step 6:- press enter if new blank window is Opened then port is open for IPAddress otherwise it not.
Hope this will help you.