Chpater 20. Advanced Virtual Private Networks
This chapter covers the following topics:
Now that we have covered the basics of PIX-to-PIX and IOS-to-IOS VPNs using both preshared keys and certificate authorities, this chapter looks at a more-advanced VPN implementation that you might come across on the CCIE Security lab exam.
The standard IPSec implementation that you learned about in Chapter 19, “Virtual Private Networks,” presents a number of issues. In this chapter you will learn how to solve some of these issues by using generic routing encapsulation (GRE) tunnels and Dynamic Multipoint IPSec VPN (DMVPN). DMVPN was introduced in Release 12.2(13)T of the Cisco IOS software. You ...
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