Installing a firewall
- Determining the appropriate firewall type
- Selecting and hardening the operating system
- Virtualizing the firewall appliance
Configuring a firewall to support outgoing services
- Supporting simple services: HTTP, SMTP
- Filtering dangerous content and handling encrypted traffic
- Managing complex services: VoIP, audio and video
Providing external services securely
- Implementing publicly accessible servers
- Building a DMZ architecture
- Supporting SMTP mail
Allowing access to internal services
- Customizing DNS for firewall architectures
- Configuring Network Address Translation (NAT)
- Developing access lists for client server applications