Canon VB-C60 - Manual (Page 61)

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IPsec Settings (IPsec)
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(6) [Security Gateway Address (IPv4/IPv6)]
If the IPsec operation mode was set to [Tunnel Mode] in (2), set the IP address of the security
gateway.
(7) [Destination Prefix Length]
This setting is required only when the IPsec operation mode was set to [Tunnel Mode] in (2).
Enter a desired prefix length for connection destination in a range of 0 to 128.
If IPv4 is used, enter a desired length in a range of 0 to 32.
„ If [ESP] or [ESP and AH] was set under [Security Protocol] in (5), the following items must be
set.
(8) [SA ESP Encryption Algorithm]
Select [AES], [3DES], [DES] or [NULL] as the ESP encryption algorithm according to the
encryption algorithm supported by the device to connect to.
Normally [AES] or [3DES] is recommended.
(9) [SA ESP Authentication Algorithm]
Select [HMAC_SHA1_96], [HMAC_MD5_96] or [No Authentication] as the ESP authentication
algorithm according to the authentication algorithm supported by the device to connect to.
If [ESP] is used alone, [No Authentication] cannot be selected.