Linux Essentials For Hackers - #17 - SSH And SSH Security
Linux Essentials For Hackers - #4 - File & Directory Permissions
Linux Essentials For Hackers - #13 - Users And Groups & Permissions With Visudo
Linux for Hackers Tutorial with OTW! (Episode 2)
Linux Essentials For Hackers - #14 - Networking (ifconfig, netstat & netdiscover)
Linux Essentials For Hackers - #8 - Enumerating Distribution & Kernel Information