Netgear FVG318 Manuel d'utilisateur Page 112

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ProSafe 802.11g Wireless VPN Firewall FVG318 Reference Manual
6-6 Advanced Virtual Private Networking
v1.0, September 2007
Manual Policy Parameters The Manual Policy creates an SA (Security Association) based on static
inputs
SPI-Incoming; SPI-Outgoing Takes a hexadecimal value between 3 and 8 characters; for example:
0x1234
Encryption Algorithm: The algorithm used to encrypt the data:
Encryption Key-In: Encryption key of the inbound policy. The length of
the key depends on the algorithm chosen. The length is in characters
as follows:
DES – 8 characters
3DES – 24 characters
AES-128 – 16 characters
AES-192 – 24 characters
AES-256 – 32 characters
Encryption Key-Out: Encryption key of the outbound policy. The
length of the key depends on the algorithm chosen. Lengths for the
outbound policy encryption key are the same as for the inbound policy.
Integrity Algorithm: Algorithm used to verify the integrity of the data.
Integrity Key-In: The integrity key (for Encapsulated Security Payload
(ESP) with encryption mode) for the inbound policy and depends on
the algorithm chosen:
MD5 – 16 characters
SHA-1 – 20 characters
Integrity Key-Out: The integrity key (for ESP with encryption mode)
for the outbound policy and depends on the algorithm chosen. Lengths
are the same as for the inbound mode.
Auto Policy Parameters
SA Life Time The duration of the Security Association before it expires.
Seconds — the amount of time before the SA expires. Over an hour is
common (3600).
Kbytes — the amount of traffic before the SA expires.
One of these can be set without setting the other.
Encryption Algorithm The encryption algorithm used to encrypt the data:
DES – the default
3DES – more secure
Integrity Algorithm Algorithm used to verify the integrity of the data. The choices are:
MD5 – the default
SHA1 – more secure
Table 6-1. VPN Manual and Auto Policy Configuration Fields (continued)
Field Description
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