If you're responsible for the security and reliability of IT resources of any kind, then encryption is your friend. Not only is it unwise to try to manage sensitive health records or credit card transactions without using strong encryption to obscure the data, but, in many cases, it's against the law. But it's not only your data that's at risk; if your website and DNS service aren't protected by some kind of public key certificates, it could be just a matter of time before your servers will be hijacked by criminal hackers. This course, Linux Encryption Security (LPIC-3 303), will cover everything you'll need to know to apply proper encryption to the Linux systems behind your website, stored and mobile data, and DNS infrastructure. First, you'll learn how to configure and administrate industry-standard packages like OpenSSL, X.509 certificates, SSL/TLS, BIND, Apache httpd, eCryptfs, and Cryptsetup. Next, you'll learn about covering encrypting the files on a PC or mobile device. You'll finish the course by learning how to secure the all-important DNS service connecting your customers and users to your web-facing resources. This course follows exam objectives from the LPIC-3 303 Linux Enterprise Professional - Security certification and by the end of it, you'll feel confident tackling an assortment of possible security risk and vulnerabilities.