Network 3

· What is network and system hardening? 

· What is a firewall? 

· Are there different kinds of firewalls (not manufacturers of firewalls, different types of firewalls)? 

· How do firewalls work?  Should you drop or deny requests when configuring a firewall?

· What is a blocklist (previously referred to as blacklisting)?  Allow-list (previously referred to as Whitelisting)? 

· What is a proxy? 

· What is an IDS?  An IPS? 

· What is the difference between passive and active scanning on a network? 

· What is spoofing? 

· What is war driving? 

· How do you close ports? 

· What is hacking?  What is a white hat (ethical) hacker?  A black hat (un-ethical) hacker?  Gray hat?    

· What is social engineering? 

· What is virtualization?  What is a guest OS?  A host OS? 

· What is a hypervisor?  What is the difference between Type 1 and Type 2 hypervisors?   

· What is a VPS?  A VPN?  A VLAN?  SDNs?