Introduction to Cybersecurity
Jeffrey Fonseca
2025-02-10
OSI Model and Our Name
Image of the 7 OSI layers
Cybersecurity is:
- Methods used to secure systems from malice or human error
- Backups!
Types of Machines
- Servers: Run things like web pages or game servers
- Desktops: Machines you normally interact with
Common Methodologies for Servers
- Limit services in use (attack surface)
- “Harden” services
- “Agent” software, which monitors systems
Methodologies for Desktops
- Restrict downloading of software
- “Agent” software to monitor systems
- Education of users
Operating Systems
- Windows, Linux, and Mac
- Windows and Mac are common for desktops
- Linux is common for servers
Overthewire Bandit
- https://overthewire.org/wargames/bandit/
- Good place to get started for Linux related things
- All answers to the challenges can be found in the built in documentation accessible via the
mancommand.
Web Based Terminals:
Interesting Youtubers
- SoBatistaCyber’s Overthewire walkthrough
- Please don’t use this…
- LaurieWired
Futher Resources
- https://www.womeninlinux.org/
- There is a big conference called SCaLE, which happens yearly in March
Jeffrey Fonseca — CC BY-SA 4.0
Introduction to Cybersecurity Jeffrey Fonseca 2025-02-10