![]() Here, we need to define the Encryption and Authentication methods for IPSec Phase2. ciscoasa(config)# tunnel-group 2.2.2.2 type ipsec-l2lĬiscoasa(config)# tunnel-group 2.2.2.2 ipsec-attributesĬiscoasa(config-tunnel-ipsec)# ikev1 pre-shared-key GNS3NetworkĬiscoasa(config-tunnel-ipsec)#exit Configuring the IPSec IKEv1 Phase2 In this article, I’m using GNS3Network as a pre-shared key. ![]() Now, we need to define the tunnel interface and the Pre-Shared Key. So, we can do this using the below command: ciscoasa(config)# crypto ikev1 enable outside Configuring the Tunnel Group and Pre-Shared Key on Cisco ASA In the Cisco ASA, we need to enable the Crypto IKEv1 to the Internet-facing interface. Lifetime: 86400 ( Default lifetime for the Phase1).Authentication: In this example, we are using the pre-shared key as authentication).Hash: md5 ( md5 is a hashing algorithm.Encryption: 3des (It is used to encrypt the Phase1 traffic).Now, let’s understand the meaning of each command. Access the global configuration mode of Cisco ASA and start with below commands: Configuring the Phase1 (IKEv1) on Cisco ASA ciscoasa(config)# crypto ikev1 policy 10Ĭiscoasa(config-ikev1-policy)# encryption 3desĬiscoasa(config-ikev1-policy)# authentication pre-shareĬiscoasa(config-ikev1-policy)# lifetime 86400 So, let’s start the configuration by configuring the Phase1 of Cisco ASA. Configuring the Extended ACL and Crypto Map. ![]()
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