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message digest for a message.
SHA1: It specifies Secure Hash Algorithm. The system generates a 128 bit
message digest for a message.
It specifies an authentication key. Both communication sides should set it to the
same one.
It specifies Security Parameter Index. It is an identification tag added to the
header while using IPsec for tunneling the IP traffic. This tag helps the kernel
discern between two traffic streams where different encryption rules and
algorithms may be in use.
Advanced IKE Settings
When the Show Advanced Settings button is clicked, the following parameters appear.
Parameter description
The mode should be set to the same one as that of the peer device.
Main: This mode provides identity protection, and is applicable to high requirement
situation for identity protection.
Aggressive: This mode does not provide identity protection, and is applicable to not
high requirement situation for identity protection.
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