Setup Online to local machine Forwarding for SET Social Engineering Toolkit in Kali Linux

You will follow the given steps to setup forwarding.

Go on ngrok.com and click on Sign Up
Fill your detail and register.
Download ngrok zip file, choose appropriate architecture as per your system (64bit/32bit). otherwise you will face problem.
Extract the files
Run terminal and reach at location you have extracted ngrok file.
After sign up on ngrok.com you will get two commands written there. Execute both commands in sequence.
Start SET Social Engineering toolkit

Select 1 > 2 > 3 > 2 options after starting toolkit and hit enter after pressing each key.
It will ask for IP Address, Copy forwarding link generated by ngrok and paste here.
Give the website name you want to create phishing page. (ex - www.facebook.com , www.gmail.com)
Send link to victim and wait for logging him/her
After Login