IPsec Virtual Private Network Fundamentals

Chapter 3. Basic IPsec VPN Topologies and Configurations In this chapter, we will review several common deployments of IPsec virtual private networks (VPNs). We will begin by reviewing the typical site-to-site IPsec model over a dedicated ci...

Site-to-Site IPsec VPN Deployments The most basic form of IPsec VPN is represented with two VPN endpoints communicating over a directly connected shared media, or dedicated circuit, which closely resembles bulk encryption alternatives at Layer 1 a...

Site-to-Site IPsec VPN Deployments and GRE (IPsec+GRE) At the core of IPsec is point-to-point functionality, which is not suited for all of today's IP communications. Indeed, many of today's voice and video applications require point-tomultipoin...

Hub-and-Spoke IPsec VPN Deployments Most of today's enterprise class IPsec VPN deployments incorporate hub-and-spoke IPsec designs. These designs extend from the principles that we have discussed previously in this chapter, whether the situation d...

Remote Access VPN Deployments As workforces become increasingly mobile in nature, this changes the dynamics of a secure IP network. Remote Access VPN deployments have become the central focus of secure connectivity in enterprise mobility, allowi...

Summary In this chapter, we have discussed several prevalent IPsec VPN topologies, including the following: Site-to-site IPsec VPNsSite-to-site IPsec+GRE VPNsHub-and-spoke IPsec VPN topologiesRemote access VPN topologies At this point, you shoul...