Brother International ADS-3000N Network Users Guide - Page 86

Encryption, AES-CBC 128, Protocol, SHA256, SHA384, SHA512, SA Lifetime, Encapsulation Mode, Transport

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Security Features NOTE • ESP is a protocol for carrying out encrypted communication using IPsec. ESP encrypts the payload (communicated contents) and adds additional information. The IP packet consists of the header and the encrypted payload, which follows the header. In addition to the encrypted data, the IP packet also includes information regarding the encryption method and encryption key, the authentication data, and so on. • AH is part of the IPsec protocol that authenticates the sender and prevents manipulation of the data (ensures the completeness of the data). In the IP packet, the data is inserted immediately after the header. In addition, the packets include hash values, which are calculated using an equation from the communicated contents, secret key, and so on, to prevent the falsification of the sender and manipulation of the data. Unlike ESP, the communicated contents are not encrypted, and the data is sent and received as plain text.  Encryption Select DES, 3DES, AES-CBC 128, or AES-CBC 256. The encryption can be selected only when ESP is 6 selected in Protocol.  Hash Select None, MD5, SHA1, SHA256, SHA384, or SHA512. None can be selected only when ESP is selected in Protocol.  SA Lifetime Specify the IKE SA lifetime. Type the time (seconds) and number of kilobytes (KByte).  Encapsulation Mode Select Transport or Tunnel.  Remote Router IP-Address Specify the IP address (IPv4 or IPv6) of the connection destination. Enter this information only when the Tunnel mode is selected. NOTE SA (Security Association) is an encrypted communication method using IPsec or IPv6 that exchanges and shares information, such as the encryption method and encryption key, to establish a secure communication channel before communication begins. SA may also refer to a virtual encrypted communication channel that has been established. The SA used for IPsec establishes the encryption method, exchanges the keys, and carries out mutual authentication according to the IKE (Internet Key Exchange) standard procedure. In addition, the SA is updated periodically. Submit Click this button to register the settings. NOTE When you change the settings for the template currently in use, the IPsec screen in Web Based Management closes and opens again. 82

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Security Features
82
6
NOTE
•
ESP is a protocol for carrying out encrypted communication using IPsec. ESP encrypts the payload
(communicated contents) and adds additional information. The IP packet consists of the header and the
encrypted payload, which follows the header. In addition to the encrypted data, the IP packet also includes
information regarding the encryption method and encryption key, the authentication data, and so on.
•
AH is part of the IPsec protocol that authenticates the sender and prevents manipulation of the data
(ensures the completeness of the data). In the IP packet, the data is inserted immediately after the header.
In addition, the packets include hash values, which are calculated using an equation from the
communicated contents, secret key, and so on, to prevent the falsification of the sender and manipulation
of the data. Unlike ESP, the communicated contents are not encrypted, and the data is sent and received
as plain text.
Encryption
Select
DES
,
3DES
,
AES-CBC 128
, or
AES-CBC 256
. The encryption can be selected only when
ESP
is
selected in
Protocol
.
Hash
Select
None
,
MD5
,
SHA1
,
SHA256
,
SHA384
, or
SHA512
.
None
can be selected only when
ESP
is selected in
Protocol
.
SA Lifetime
Specify the IKE SA lifetime.
Type the time (seconds) and number of kilobytes (KByte).
Encapsulation Mode
Select
Transport
or
Tunnel
.
Remote Router IP-Address
Specify the IP address (IPv4 or IPv6) of the connection destination. Enter this information only when the
Tunnel
mode is selected.
NOTE
SA (Security Association) is an encrypted communication method using IPsec or IPv6 that exchanges and
shares information, such as the encryption method and encryption key, to establish a secure
communication channel before communication begins. SA may also refer to a virtual encrypted
communication channel that has been established. The SA used for IPsec establishes the encryption
method, exchanges the keys, and carries out mutual authentication according to the IKE (Internet Key
Exchange) standard procedure. In addition, the SA is updated periodically.
Submit
Click this button to register the settings.
NOTE
When you change the settings for the template currently in use, the IPsec screen in Web Based
Management closes and opens again.