Firewall Types
- Rule-Based Firewalls
- Policy-Based Firewalls
Firewall Categories
- Stateless Packet Filtering vs Stateful Packet Filtering
- Open source vs Proprietary
- Hardware vs Software
- Host vs Appliance vs Virtual
Specialized Firewall Appliances
- Web Application Firewall
- Network Address Translation Gateway
- Next Generation Firewall
- Unified Threat Management
