Fortinet FortiGate FortiGate-5001 Administration Manual page 265

VPN
FortiGate-5000 series Administration Guide
Remote Gateway Type the IP address of the public interface to the remote peer. The
address identifies the recipient of ESP datagrams.
Encryption Select one of the following symmetric-key encryption algorithms:
Algorithm
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Figure 133:Adding a manual key VPN tunnel
Encryption Key If you selected:
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Authentication Select one of the following message digests:
Algorithm
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01-28008-0013-20050204
DES-Digital Encryption Standard, a 64-bit block algorithm that uses a
56-bit key.
3DES-Triple-DES, in which plain text is encrypted three times by three
keys.
AES128-A 128-bit block algorithm that uses a 128-bit key.
AES192-A 128-bit block algorithm that uses a 192-bit key.
AES256-A 128-bit block algorithm that uses a 256-bit key.
DES, type a 16-character hexadecimal number (0-9, a-f).
3DES, type a 48-character hexadecimal number (0-9, a-f) separated
into three segments of 16 characters.
AES128, type a 32-character hexadecimal number (0-9, a-f)
separated into two segments of 16 characters.
AES192, type a 48-character hexadecimal number (0-9, a-f)
separated into three segments of 16 characters.
AES256, type a 64-character hexadecimal number (0-9, a-f)
separated into four segments of 16 characters.
MD5-Message Digest 5 algorithm, which produces a 128-bit message
digest.
SHA1-Secure Hash Algorithm 1, which produces a 160-bit message
digest.
Manual key
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