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ESP Encryption
Select the encryption and authentication algorithms for the VPN
Algorithm
tunnel using the drop-down menu.
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•
Inbound ESP
Enter a key for inbound traffic. The length of the key is determined
Encryption Key
by the selected encryption algorithm. The key must match the
outbound key at the remote gateway.
Outbound ESP
Define a key for outbound traffic. The length of the key is
Encryption Key
determined by the selected encryption algorithm. The key must
match the inbound key at the remote gateway.
ESP Authentication
Select the authentication algorithm to use with ESP. This option is
Algorithm
available only when
the ESP type. Options include:
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Inbound ESP
Define a key for computing the integrity check on the inbound
Authentication Key
traffic with the selected authentication algorithm. The key must be
32/40 (for MD5/SHA1) hexadecimal (0-9, A-F) characters in length.
The key must match the corresponding outbound key on the remote
security gateway.
Outbound ESP
Enter a key for computing the integrity check on outbound traffic
Authentication Key
with the selected authentication algorithm. The key must be 32/40
(for MD5/SHA1) hexadecimal (0-9, A-F) characters in length. The
key must match the corresponding inbound key on the remote
security gateway.
DES - Uses the DES encryption algorithm requiring 64-bit
(16-character hexadecimal) keys.
3DES - Uses the 3DES encryption algorithm requiring 192-bit
(48-character hexadecimal) keys.
AES 128-bit: - Uses the Advanced Encryption Standard
algorithm with 128-bit (32-character hexadecimal) keys.
AES 192-bit: - Uses the Advanced Encryption Standard
algorithm with 192-bit (48-character hexadecimal) keys.
AES 256-bit: - Uses the Advanced Encryption Standard
algorithm with 256-bit (64-character hexadecimal) keys.
ESP with Authentication
MD5 - Enables the Message Digest 5 algorithm, which
requires 128-bit (32-character hexadecimal) keys.
SHA1 - Enables Secure Hash Algorithm 1, which requires
160-bit (40-character hexadecimal) keys.
Configuring Access Point Security
was selected for
6-43
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