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Settings for an IPsec Template
Manual Settings for an IPsec Template
Option Description
Template Name Type a name for the template (up to 16 characters).
Use Prefixed Template Select Custom.
Internet Key Exchange (IKE) IKE is a communication protocol that is used to exchange encryption
keys in order to carry out encrypted communication using IPsec. To
carry out encrypted communication for that time only, the encryption
algorithm that is necessary for IPsec is determined and the encryption
keys are shared. For IKE, the encryption keys are exchanged using the
Diffie-Hellman key exchange method, and encrypted communication
that is limited to IKE is carried out.
Select Manual.
Authentication Key (ESP, AH)
Type the In/Out values.
These settings are necessary when Custom is selected for Use
Prefixed Template, Manual is selected for Internet Key Exchange
(IKE), and a setting other than None is selected for Hash for
Encapsulating Security section.
The number of characters you can set differs depending on the
setting you chose for Hash in the Encapsulating Security
section.
If the length of the specified authentication key is different than
the selected hash algorithm, an error will occur.
• MD5: 128 bits (16 bytes)
• SHA1: 160 bits (20 bytes)
• SHA256: 256 bits (32 bytes)
• SHA384: 384 bits (48 bytes)
• SHA512: 512 bits (64 bytes)
When you specify the key in ASCII Code, enclose the
characters in double quotation marks (").
Code key (ESP)
Type the In/Out values.
These settings are necessary when Custom is selected in Use
Prefixed Template, Manual is selected in Internet Key Exchange
(IKE), and ESP is selected in Protocol in Encapsulating Security.
The number of characters you can set differs depending on the
setting you chose for Encryption in the Encapsulating
Security section.
If the length of the specified code key is different than the
selected encryption algorithm, an error will occur.
• DES: 64 bits (8 bytes)
• 3DES: 192 bits (24 bytes)
• AES-CBC 128: 128 bits (16 bytes)
• AES-CBC 256: 256 bits (32 bytes)
When you specify the key in ASCII Code, enclose the
characters in double quotation marks (").
SPI
These parameters are used to identify security information. Generally, a
host has multiple Security Associations (SAs) for several types of IPsec
communication. Therefore, it is necessary to identify the applicable SA
when an IPsec packet is received. The SPI parameter, which identifies
the SA, is included in the Authentication Header (AH) and
Encapsulating Security Payload (ESP) header.
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