Last Updated: 17 April 2018
By Maynard Paton


Configuring Your AWS Server For SSH Access


Welcome to Part 3 of Installing Sendy and Virtualmin on Amazon Web Services (AWS).

This page describes how to configure your AWS server (or ‘instance’) to allow access through an SSH client.  Such access is required to install Virtualmin and Sendy. (Source: AWS and Tharindu Kumara)

Before You Start:

Part 3 uses an SSH client to issue instructions through the command line to your AWS server. Please read Getting Started With SSH Clients And Terminal for more details.


Here are the steps to follow

1) If you have just completed Part 2, you should already be logged in to AWS and the EC2 service.

Otherwise, log in to the AWS console at https://aws.amazon.com/

Make sure Your AWS Region is set correctly:


Select EC2 from the Services menu:


Select Instances from the left-hand menu:


2) Find the Public DNS (IPv4) address of the server created in Part 2. If need be, click the box on the right to show the server’s full details:  


(Note: your server’s Public DNS (IPv4) address will differ to the one shown in the screenshot above.)

3) Click the Copy to clipboard icon to copy the Public DNS (IPv4) address:


4) Open a new Terminal window. At the command line type chmod 400 then press the space bar:


5) Drag the private key file created in Part 2 into the Terminal window:


The instruction should look something like this:

chmod 400 /Users/username/DeskTop/YourKeyPairName.pem

Then press Enter.

6) At the command line type ssh -i then press the space bar.

Then once again drag the private key file created in Part 2 into the Terminal window.

Then type ubuntu@

Then press CTRL + V to paste the Public DNS (IPv4) address into the Terminal window.

The full instruction should look something like this:

ssh -i /Users/username/DeskTop/YourKeyPairName.pem ubuntu@ec2-34-244-162-100.eu-west-1.compute.amazonaws.com

Then press Enter.

7) You will probably receive a message about a ‘fingerprint’. If you do, enter:

yes


You should now be logged into your AWS server as user ubuntu


8) At the command line, switch to the root user by entering:

sudo -i


The command-line prefix should now change from ubuntu@ to root@:


9) At the command line, enter:

nano /etc/ssh/sshd_config


You should see something like this, and be able to edit the file:


10) Use the downward arrow key to scroll through the file until you reach the line PermitRootLogin prohibit-password:


11) Replace prohibit-password with yes


12) Use the downward arrow key to scroll through the file until you reach the line PasswordAuthentication no:


13) Replace no with yes


14) Press CTRL + O


File Name to Write: should appear. Press Enter.

15) Press CTRL + X and you should return to the command line:


 16) At the command line, enter:

service sshd reload


The command line should reappear:


17) At the command line, enter:

passwd


Enter a password. Note: the cursor may not move when you type the password.

IMPORTANT! 

This password is your server root passwordMake a note of your server root password as it will be used several times within the rest of the Installing Sendy and Virtualmin on AWS guide.


You will be asked to retype the password: 


18) Then at the command line, enter:

exit

…to exit from the root user, then enter: 

exit

…to exit from the ubuntu user, then enter:

exit

…to exit the Terminal process.


Now close the Terminal window.

19) All done!

Stay logged into AWS, and click here to start Part 4. Alternatively, click here to return to the Introduction.

If you have any questions or comments about this page, please let me know so I can keep this website as helpful as possible.

Happy installing!

Maynard Paton

(Want to learn more? Click here to visit the full website index.)


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