In this chapter, you learn to:
See how Pix Firewall enables a secure VPN
Use IPSec configuration tasks
Understand Cisco VPN Client
Scale PIX Firewall VPNs
Know about PPPoE and the PIX Firewall
In this chapter, you look at configuring IPSec VPNs on PIX Firewalls. Because the fundamentals of IPSec were addressed extensively in Chapters 9 through11, that material won’t be repeated. Terminology and concepts like Internet Key Exchange (IKE), Certification Authority (CA), preshared keys, and so forth are identical when connecting to a firewall. The differences are limited to the implementation commands.
As you prepare for the exam, be sure to check the Cisco site for the PIX OS version covered. At press time, the current test version is 6.2. Be careful when verifying commands against the Cisco online resources. Many documents haven’t been fully updated to 6.2. Old defaults and syntax have changed, so when in doubt, go to a device and try it out.