VPN with Preshared Keys
Using preshared keys is easy, once you understand the concepts presented in the previous example. The difference between this configuration and the previous one is that you are now relying on the Internet Security Association and Key Management Protocol (ISAKMP) for exchanging keys. This section presents the configuration before exploring how it has changed. The main office's configuration is as follows:
hostname chicago domain-name bigcompany.com isakmp enable outside isakmp policy 15 authentication pre-share isakmp policy 15 encr 3des crypto isakmp key isakmpkey address 172.30.1.2 crypto ipsec transform-set strong esp-sha-hmac esp-3des access-list myaccesslist permit ip 10.1.2.0 255.255.255.0 crypto map seattletraffic ...
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