User manual

set vpn
Chapter 2 Command Descriptions 235
inbound_authentication={none|md5|sha1}
The optional authentication algorithm, used with the associated
authentication key specified by the “inbound_auth_key” option, to
authorize access on the VPN tunnel for inbound traffic.
none
No authentication algorithm is used.
md5
MD5 authentication algorithm, which uses 128-bit keys.
sha1
SHA1 authentication algorithm, which uses 160-bit keys.
inbound_auth_key={ascii key|hex key}
The authentication key for inbound traffic, according to the
authentication algorithm specified by the “inbound_authentication”
option. The authentication key may be specified as an ASCII value
using alpha-numeric characters or may be specified as a hexadecimal
value prefixed by “0x”. The following table lists the associated lengths
of the authentication keys based on the authentication algorithm.
inbound_encryption={none|des|3des|aes}
The optional encryption algorithm used with the associated encryption
key specified by the “inbound_enc_key” option to encrypt data on the
VPN tunnel for inbound traffic.
none
No encryption algorithm is used.
des
DES encryption algorithm, which uses 64-bit keys.
3des
3DES encryption algorithm, which uses 192-bit keys.
aes
AES encryption algorithm, which uses 128-bit keys.
Algorithm Size
Key Length
ASCII Hexadecimal
MD5 128-bit 16 32
SHA1 160-bit 20 40