Mastering™ Network Security, Second Edition

5.9. Firewall Deployment

You have selected a firewall product. Now the big question is how it should be placed within your network environment. Although opinions vary, the most common deployment is shown in Figure 5.13.

Figure 5.13. Where to place your firewall

Table 5.6. Popular firewall products compared by price, feature, and platform

Name	Services (Static/Dynamic/Stateful/Proxy)	Operating Systems (or Appliance)	Address translation	Firewall logging and analysis	VPNS	Intrusion Detection and Response	Integration and access control	load Sharing and Fail Over	Other services (including integrated third party tools)
Microsoft ISA	All (including application ...