How to test open port on remote or local machine

If you ever want to test if certain port open in remote machine or local machine try this method

Step-1: Download free tool PortQuery from Microsoft (Its a command line tool)
Step-2: Extract zip file content to C:\Util or wtever folder you want
Step-3: Open command Prompt and type the following command (Example: If you want to test if Port 1521 Open on Machine name PRODSRV1 then try below command)

Syntax: PortQry -n-e

Example:

CD C:\Util
PortQry -n PRODSRV1 -e 1521

Hope this helps