System information
COMMAND CENTER Pages
Operation Guide 51
Protocol
Select
ESP
or
AH
for the protocol.
ESP
protects the privacy
and integrity of the packet contents. Select the hash algorithm
and encryption algorithm below.
AH
protects the integrity of
the packet contents using encryption checksum. Select the
hash algorithm below.
Hash
Selects the hash algorithm.
Encryption
Selects the encryption algorithm. (When
ESP
is selected
under
Protocol
.)
PFS
When
PFS
is set to
On
(enabled), even if a key is decrypted,
the decrypted key cannot be used to decrypt the other keys
generated after the decryption. This improves the safety, but
imposes a heavy burden because of more key-generation
processes.
Diffie-
Hellman
Group
The Diffie-Hellman key-sharing algorithm allows two hosts on
an unsecured network to share a private key securely. Select
the Diffie-Hellman group to use for key sharing.
Lifetime
Measure-
ment
Specifies whether the lifetime is measured by time or by time
and data size.
Lifetime
(Time)/
Lifetime
(Data
Size)
Specifies the lifetime of an IPSec SA.
Lifetime Measurement
allows you to select whether to use time or data size to specify
the lifetime. When you select
Time & Data Size
, an SA is
disabled and updated when either the time or data size of the
SA exceeds the specified value.
IP Version
Specifies the IP version of the other end. Select
IPv4
or
IPv6
.
IP
Address
(IPv4)
Specifies the IPv4 addresses of the hosts or network with
which the print system is connecting via IPSec. When you are
restricting the scope of IPSec, be sure to specify the IP
addresses. If this field is blank, all IPv4 addresses will be
allowed to connect the print system.
IP
Address
(IPv6)
Specifies the IPv6 addresses of the hosts or network with
which the print system is connecting via IPSec. When you are
restricting the scope of IPSec, be sure to specify the IP
addresses. If this field is blank, all IPv6 addresses will be
allowed to connect the print system.
Subnet
Mask
When
IPv4
is selected for
IP Version
, this specifies the
subnet mask of the hosts or network with which the print
system is connecting via IPSec. If this field is blank, the
specified addresses are considered to be host addresses.
Prefix
Length
When
IPv6
is selected for
IP Version
, this specifies the prefix
length of the hosts or network with which the print system is
connecting via IPSec. If this field is blank, the specified
addresses are considered to be host addresses.
Item Description