Network > Network Profiles > IKE Crypto
Use the IKE Crypto Profiles page to specify protocols and algorithms for identification, authentication, and encryption (IKEv1 or IKEv2, Phase 1).
To change the order in which an algorithm or group is listed, select the item and then click Move Up or Move Down. The order determines the first choice when settings are negotiated with a remote peer. The setting at the top of the list is attempted first, continuing down the list until an attempt is successful.
IKE Crypto Profile Settings
Enter a name for the profile.
Specify the priority for Diffie-Hellman (DH) groups. Click Add and select groups: group1, group2, group5, group14, group19, or group20. For highest security, select an item and then click Move Up or Move Down to move the groups with higher numeric identifiers to the top of the list. For example, move group14 above group2.
Specify the priority for hash algorithms. Click Add and select algorithms. For highest security, select an item and then click Move Up or Move Down to change the order (top to bottom) to the following: sha512, sha384, sha256, sha1, md5.
Select the appropriate Encapsulating Security Payload (ESP) authentication options. Click Add and select algorithms. For highest security, select an item and then click Move Up or Move Down to change the order (top to bottom) to the following: aes-256-cbc, aes-192-cbc, aes-128-cbc, 3des, des.
Select unit of time and enter the length of time that the negotiated IKE Phase 1 key will be effective (default is 8 hours).
IKEv2 Authentication Multiple
Specify a value (range is 0-50; default is 0) that is multiplied by the Key Lifetime to determine the authentication count. The authentication count is the number of times that the gateway can perform IKEv2 IKE SA re-key before the gateway must start over with IKEv2 re-authentication. A value of 0 disables the re-authentication feature.
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