Create keys for your Linux Machine

Step 1: Install a Linux machine.

Step 2: Type openssl   --> if this is not working then in command line, enter -   

            sudo yum install openssl

Step 3: Next we will generate myCert.pem and myPrivateKey.key : 

            openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout myPrivateKey.key -out myCert.pem

Step 4: keep hitting enter, as it prompts for question.

Step 5: Now, type pwd , in command line and check the path. 

Step 6: Go to that path and you should have myCert.pem and myPrivateKey.key

Step 7: Now change the permissions of myPrivateKey.key(important)

            chmod 600 myPrivateKey.key

Step 8: Now, let us create the corresponding myCert.cer

            openssl  x509 -outform der -in /home/brillio/myCert.pem -out /home/brillio/myCert.cer

Step 9: Now we will create a ppk for putty. For this we first need to create RSA Private Key that PuttyGen(tool to create ppk) can understand.

            openssl rsa -in /home/brillio/myPrivateKey.key -out myPrivateKey_rsa

            chmod 600 /home/brillio/myPrivateKey_rsa

Step10: Now, download PuttyGen (This will generate ppk files for us to connect using putty)

http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html

Step 11: Now load the myPrivateKey_rsa and save the corresponding private and public keys.

Step 12: Now you should have the following keys.

Step 13: Next step is to download putty.exe.

http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html

Step 14: Open putty and provide hostname or IP Address as shown

Step 15: Click on Auth as shown, and provide the .ppk file just created. Click on open and you should be able to login to Linux machine using Putty.