Network > Network Profiles > IPSec Crypto
Select NetworkNetwork ProfilesIPSec Crypto to configure IPSec Crypto profiles that specify protocols and algorithms for authentication and encryption in VPN tunnels based on IPSec SA negotiation (Phase 2).
For VPN tunnels between GlobalProtect gateways and clients, see Network > Network Profiles > GlobalProtect IPSec Crypto.
IPSec Crypto Profile Settings
Enter a Name to identify the profile (up to 31 characters). The name is case-sensitive and must be unique. Use only letters, numbers, spaces, hyphens, and underscores.
Select a protocol for securing data that traverses the VPN tunnel:
Encryption (ESP protocol only)
Click Add and select the desired encryption algorithms. For highest security, use Move Up and Move Down to change the order (top to bottom) to the following: aes-256-gcm, aes-256-cbc, aes-192-cbc, aes-128-gcm, aes-128-ccm (the VM-Series firewall doesn’t support this option), aes-128-cbc, 3des, and des. You can also select null (no encryption).
Click Add and select the desired authentication algorithms. For highest security, use Move Up and Move Down to change the order (top to bottom) to the following: sha512, sha384, sha256, sha1, md5. If the IPSec Protocol is ESP, you can also select none (no authentication).
Select the Diffie-Hellman (DH) group for Internet Key Exchange (IKE): group1, group2, group5, group14, group19, or group20. For highest security, choose the group with the highest number. If you don’t want to renew the key that the firewall creates during IKE phase 1, select no-pfs (no perfect forward secrecy): the firewall reuses the current key for the IPSec security association (SA) negotiations.
Select units and enter the length of time (default is one hour) that the negotiated key will stay effective.
Select optional units and enter the amount of data that the key can use for encryption.
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