Digi IX20W-PR User Manual page 503

Virtual Private Networks (VPN)
The default is 3des.
iv. Set the type of hash to use during phase 2 to verify communication integrity:
(config vpn ipsec tunnel ipsec_example ike phase2_proposal 0)>
hash value
(config vpn ipsec tunnel ipsec_example ike phase2_proposal 0)>
where value is one of:
The default is sha1.
v. Set the type of Diffie-Hellman group to use for key exchange during phase 2:
i. Use the ? to determine available Diffie-Hellman group types:
ii. Set the Diffie-Hellman group type:
The default is modp2048.
vi. (Optional) Add additional phase 2 proposals:
IX20 User Guide
n aes128gcm64
n aes128gcm96
n aes192
n aes192gcm128
n aes192gcm64
n aes192gcm96
n aes256
n aes256gcm128
n aes256gcm64
n aes256gcm96
n null
n md5
n sha1
n sha256
n sha384
n sha512
(config vpn ipsec tunnel ipsec_example ike phase2_proposal 0)>
dh_group ?
curve25519
curve448
ecp192
ecp224
...
(config vpn ipsec tunnel ipsec_example ike phase2_proposal 0)>
(config vpn ipsec tunnel ipsec_example ike phase2_proposal 0)>
dh_group value
(config vpn ipsec tunnel ipsec_example ike phase2_proposal 0)>
IPsec
503