Tag Archives: mac osx

Howto Login to servers using SSH keys authentication

Using public key authentication is far more secure and smart way to manage server authentication. And it is quite easy to implement and use. Fortunately, unix/linux terminals allow users to create public/private SSH keys combination that can be used to authenticate and login to servers without any hassle.

The traditional SSH authentication using the combination of username/password is good but really not that secure anymore. The passwords can be guessed or even broken using brute force attack. At times even a compromised terminal can give away the passwords to hackers.

This is the first article in the series on “Systems Security”. The complete list of articles in the System Security series are listed below.

  1. How to setup SSH keys based authentication (current article)
  2. How to disable password based authentication
  3. How to setup UFW Firewall

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Installing Ubuntu within MacOS X

Many of us have wanted to try and install Linux but cannot part ways with our Windows or Mac OSX. Sometimes, we are not sure if it is worth the switch or if we will ever be comfortable in the new alien environment. But, there are alternatives to this. We can still run Ubuntu and other Linux within our Windows or Mac without needing to uninstall either. Yes, we can actually run Windows and Linux simultaneously using a simple and small software application called Virtualbox.

Of Course, such a solution works great on a fast computer with lots of memory and hard disk space. We recommend at least an Intel’s Core2Duo computer running 4GB of RAM. If you do it in anything less, you might run into performance issues.

Techie by day, blogger by night. Love the outdoors, enjoy traveling and building new and interesting things. Follow me if you want to know something.