1. IP Addresses & Ports IP Addresses – identify a device on a network
assigned by router when device connects
Ports – identify a service running on your device

2. Firewalls
Monitor and control attempts to access to your device over the network Should allow the appropriate requests, block unexpected/potentially malicious requests

3. Simple Firewall Setup
sudo apt install ufw sudo ufw enable sudo ufw deny 4711

4. How do hacks happen?

5. How do hacks happen? Hackers find and exploit vulnerabilities in…
The physical network
Firewall configuration
Software (often outdated)

6. But don’t forget the least secure part of a computer system…
Us!

7. Social Engineering Phishing Viruses
Tricking people into giving up their passwords / security answers over the phone / by

8. Hacking is fun…
but be careful!