Debian Openssl Key Generation For Putty

Posted : admin On 11.04.2020

Debian Openssl Key Generation For Putty Key

PHP / Bash: Creating PPK out of OpenSSH Key with passphrase. Ask Question Asked 6 years, 7 months ago. Now I've to convert the OpenSSL-Key to the ppk-format of PuTTY (in the cmd, not in the GUI). If anyone have an Idea on how to manage that, please let me know. Generate RSA private SSH key. Nov 10, 2011 How to Generate A Public/Private SSH Key Linux By Damien – Posted on Nov 10, 2011 Nov 18, 2011 in Linux If you are using SSH frequently to connect to a remote host, one of the way to secure the connection is to use a public/private SSH key so no password is transmitted over the network and it can prevent against brute force attack. Download PuTTY. PuTTY is an SSH and telnet client, developed originally by Simon Tatham for the Windows platform. PuTTY is open source software that is available with source code and is developed and supported by a group of volunteers. Jun 19, 2015 DigitalOcean Meetups Find and meet other developers in your city. How To Create a SSL Certificate on Apache for Debian 8. OpenSSL installed and updated (should. I am trying to generate a secure private and public key with openssl for use with my cloud hosting provider but when I did that the public key output from openssl was not recognized. $ openssl genrsa -out private.pem -passout file:password.txt 2048 After Generating RSA private key, 2048 bit long modulus, then.

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Introduction

This tutorial walks you through the setup and configuration of an Apache server secured with an SSL certificate. By the end of the tutorial, you will have a server accessible via HTTPS.

SSL is based on the mathematical intractability of resolving a large integer into its also-large prime factors. Using this, we can encrypt information using a private-public key pair. Certificate authorities can issue SSL certificates that verify the authenticity of such a secured connection, and on the same note, a self-signed certificate can be produced without third-party support.

In this tutorial, we will generate a self-signed certificate, make the necessary configurations, and test the results. Self-signed certificates are great for testing, but will result in browser errors for your users, so they’re not recommended for production.

If you’d like to obtain a paid certificate instead, please see this tutorial.

Prerequisites

To follow this tutorial, you will need:

One fresh Debian 8 Droplet
A sudo non-root user, which you can set up by following Steps 2 and 3 of this tutorial
OpenSSL installed and updated (should be installed by default)

You may want a second computer with OpenSSL installed, for testing purposes:

Another Linux Droplet
Or, a Unix-based local system (Mac, Ubuntu, Debian, etc.)

Step 1 — Install Apache

In this step, we will use a built-in package installer called apt-get. It simplifies package management drastically and facilitates a clean installation.

In the link specified in the prerequisites, you should have updated apt-get and installed the sudo package, as unlike other Linux distributions, Debian 8 does not come with sudo installed.

Apache will be our HTTPS server. To install it, run the following:

Step 2 — Enable the SSL Module

In this section, we will enable SSL on our server.

First, enable the Apache SSL module.

The default Apache website comes with a useful template for enabling SSL, so we will activate the default website now.

Restart Apache to put these changes into effect.

Step 3 — Create a Self-Signed SSL Certificate

First, let’s create a new directory where we can store the private key and certificate.

Next, we will request a new certificate and sign it.

First, generate a new certificate and a private key to protect it.

The days flag specifies how long the certificate should remain valid. With this example, the certificate will last for one year
The keyout flag specifies the path to our generated key
The out flag specifies the path to our generated certificate

Invoking this command will result in a series of prompts.

Common Name: Specify your server’s IP address or hostname. This field matters, since your certificate needs to match the domain (or IP address) for your website
Fill out all other fields at your own discretion.

Example answers are shown in red below.

Set the file permissions to protect your private key and certificate.

For more information on the three-digit permissions code, see the tutorial on Linux permissions.

Windows 7 ultimate key genuine. Your certificate and the private key that protects it are now ready for Apache to use.

Step 4 — Configure Apache to Use SSL

In this section, we will configure the default Apache virtual host to use the SSL key and certificate. After making this change, our server will begin serving HTTPS instead of HTTP requests for the default site.

Open the server configuration file using nano or your favorite text editor.

Locate the section that begins with <VirtualHost _default_:443> and make the following changes.

Add a line with your server name directy below the ServerAdmin email line. This can be your domain name or IP address:

Find the following two lines, and update the paths to match the locations of the certificate and key we generated earlier. If you purchased a certificate or generated your certificate elsewhere, make sure the paths here match the actual locations of your certificate and key:

/etc/apache2/sites-enabled/default

Once these changes have been made, check that your virtual host configuration file matches the following.

Save and exit the file.

Restart Apache to apply the changes.

To learn more about configuring Apache virtual hosts in general, see this article.

Step 5 — Test Apache with SSL

In this section, we will test your SSL connection from the command line.

You can run this test from either (1) your local Unix-based system, (2) another Droplet, or (3) the same Droplet. If you run it from an external system you’ll confirm that your site is reachable over the public Internet.

Open a connection via the HTTPS 443 port.

Scroll to the middle of the output (after the key), and you should find the following:

Of course, the numbers are variable, but this is success. Congratulations!

Press CTRL+C to exit.

You can also visit your site in a web browser, using HTTPS in the URL (https://example.com). Your browser will warn you that the certificate is self-signed. You should be able to view the certificate and confirm that the details match what you entered in Step 3.

Conclusion