VR-200 16-Port Multi-WAN VPN Router
• 93 •
hexadecimal value is acceptable, and the valid range is 100~ffffffff. Each tunnel
must have a unique Inbound SPI and Outbound SPI. No two tunnels share the same
SPI. The Incoming SPI here must match the Outgoing SPI value at the other end of
the tunnel, and vice versa
z
Encryption:
There are two methods of encryption, DES and 3DES. The Encryption
method determines the length of the key used to encrypt/decrypt ESP packets. DES
is 56-bit encryption and 3DES is 168-bit encryption. 3DES is recommended because
it is more secure, and both sides must use the same Encryption method.
z
Authentication:
There are two methods of authentication, MD5 and SHA. The
Authentication method determines a method to authenticate the ESP packets. MD5
is a one-way hashing algorithm that produces a 128-bit digest. SHA is a one-way
hashing algorithm that produces a 160-bit digest. SHA is recommended because it
is more secure, and both sides must use the same Authentication method.
z
Encryption Key:
This field specifies a key used to encrypt and decrypt IP traffic,
and the Encryption Key is generated by users themselves. The hexadecimal value is
acceptable in this field. Both sides must use the same Encryption Key. If DES is
selected, the Encryption Key is 16-bit. If users do not fill up to 16-bit, this filed will be
filled up to 16-bit automatically by 0. If 3DES is selected, the Encryption Key is 48-bit.
If users do not fill up to 48-bit, this filed will be filled up to 48-bit automatically by 0.
z
Authentication Key:
This field specifies a key used to authenticate IP traffic and the
Authentication Key is generated yourself. The hexadecimal value is acceptable in
this field. Both sides must use the same Authentication key. If MD5 is selected, the
Authentication Key is 32-bit. If users do not fill up to 32-bit, this filed will be filled up
to 32-bit automatically by 0. If SHA1 is selected, the Authentication Key is 40-bit. If
users do not fill up to 40-bit, this filed will be filled up to 40-bit automatically by 0.
Ike with Preshared Key