SSH connection from your computer (windows/linux/mac) to android cell phone using putyy

Server(Android phone SSHDroid)

1. Install ssh srever in the android phone (Download SSHDroid app from playstore)
2. Switch on the wifi in the phone
3. Open SSHDroid and click start service

Client (computer putyy) 
4. Switch on the wifi in the pc
5. Open putyy and enter the server ip and port number 

condition: both the devices connected to same wifi network.

6. Once the connection is established it will prompt for username:root password:admin (default credentials)

7. Now check the working by giving 'date' 'cal' commands

In case if you get 'Network error connection refused' 
check the ip and port which should be as given by server username@ipaddress:port

further you can enabling the putyy through firewall (which is optional):
Go to Control Panel\System and Security\Windows Firewall\Allowed apps 
>allow another app
>browse
>putty.exe

And now it should work properly.
type 'exit' to terminate the connection