I enthusiastically use two-factor authentication whenever possible, because static passwords aren't the best mechanism around any moat. Traditional passwords are vulnerable to social engineering, ...

If you run a publicly accessible Web server for your own use (and let's face it, if you're reading Linux Journal, there's a very good chance you do), how do you go about limiting the risk of someone ...

Jack Wallen shows you how to set up both two-factor authentication and SSH key authentication for a rock-solid remote login of your Linux servers. Chances are you administer your Linux machines by way ...

The math that makes this warning work is public-private key cryptography. The problem we’re talking about today only shows up in RSA authentication. Specifically those that use the Chinese Remainder ...