LV switch IPPBX8000, User Manual

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LvSwitch IPPBX 8000 Manual
61
Encryption Algorithm
DES
（
Data Encryption Standard
）
The 64bit key is
used to encrypt the message block.
3DES
（
Triple DES
）
Three 64bit DES keys are used to
encrypt the message block.
AES
（
Advanced Encryption Standard
）
This product
supports 128bit, 192bit, 256bit key length AES
algorithm; Default value is DES
Authentication Algorithm MD5: MD5 generates a 128bit message digest by
entering messages of any length;SHA1: the 160bit
message digest is generated by input messages with the
length less than 2 64 bits. The digest of SHA1 is longer
than MD5, so it is more secure.The default value is
"MD5".
IKE SA Lifetime Before the life cycle timeout of the set IKE SA, an SA
will be negotiated in advance to replace the old SA.
Before the new SA is completed, the old SA will still be
used. After the new SA is established, the new SA will
be used immediately.
Default value is 3600s ,the range is
(1200-86400) Seconds
Phase 2 setting description as below
Table 5-15 phase 2 setting description as below
Interface items Description
Phase 2 Configure the second stage, use the SA established in
the first stage to provide IPsec negotiation security
service, that is, negotiate specific SA for IPsec, and
establish IPsec SA for final IP data packet security
transmission.
ESP mode In tunnel mode, AH or ESP is inserted before the
original IP packet header, and a new packet header is
generated before AH or ESP. In transport mode, AH or
ESP is inserted behind the IP packet header, but before
all transport layer protocols, or before all other IPsec
protocols; Default value is “Tunnel “
Protocol types AH or ESP Default value is “ ESP”.
AH is the authentication header protocol and the