Advanced Network Security

Activity 2-4: Working with Binary and Octal Numbering Enter Time Required: 30 minutes Objective: Apply your skills in binary and octal numbering to configuring nix directory and file permissions. Description: As a security professional, you need to understand different numbering systems For example, if you work with routers, you might have to create access control lists (ACLs) that filter inbound and outbound network traffic, and most ACLs require understanding binary numbering. Similarly, if you're hardening a Linux system, your understanding of binary helps you create the correct umask and permissions. UNIX uses base-8 (octal) num- bering for creating directory and file permissions. You don't need to do this activity on a computer; you can simply use a pencil and paper