Description should include
- identification of types of firewalls
- web-application firewall (WAF)
- next-generation firewall (NGFW)
- stateful
- stateless
- unified threat management (UTM)
- network address translation (NAT) gateway
- content and/or uniform resource locator (URL) filter
- open-source vs. proprietary
- hardware vs. software
- appliance vs. host-based vs. virtual comparison
- characteristics, uses, performance, and benefits of each type of firewall
- software and hardware firewalls comparison
- host-based and network comparison.