Avaya Configuring Integrated IP Security Manual do Utilizador descarregar pdf (Página 25)

304111-A Rev 00

2-1

Chapter 2

Getting Started with IPsec

IPsec has three key constructs:

• Security gateways

• Security policies

• Security associations (SAs)

In the IPsec context, hosts communicate across an untrusted network through

security gateways (routers configured for IPsec interfaces). Security policies

determine how the IPsec interfaces handle data packets for the hosts on both ends

of a connection. Security associations apply IPsec services to data packets

traveling between the security gateways.

Figure 2-1

shows the logical relationship between security policies and security

associations.

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