Funkwerk WI2040n Bedienungsanleitung PDF herunterladen (Seite 295)

Field Description

fast key setup, low memory requirements, high level of secur-

ity against attacks and general speed. Here, it is used with a

key length of 128 bits.

• 0: Rijndael has been nominated as AES due to its

fast key setup, low memory requirements, high level of secur-

ity against attacks and general speed. Here, it is used with a

key length of 192 bits.

• 0: Rijndael has been nominated as AES due to its

fast key setup, low memory requirements, high level of secur-

ity against attacks and general speed. Here, it is used with a

key length of 256 bits.

• 4 1: Twofish was a final candidate for the AES

(Advanced Encryption Standard). It is rated as just as secure

as Rijndael (AES), but is slower.

• (2 1: Blowfish is a very secure and fast algorithm.

Twofish can be regarded as the successor to Blowfish.

• +4: CAST is also a very secure algorithm, marginally

slower than Blowfish, but faster than 3DES.

• 90: DES is an older encryption algorithm, which is rated as

weak due to its small effective length of 56 bits.

Hash algorithms (Authentication):

• ?9  (default value): MD 5 (Message Digest #5) is an older

hash algorithm. It is used with a 96 bit digest length for IPSec.

• ..: All options can be used.

• =  : SHA1 (Secure Hash Algorithm #1) is a hash al-

gorithm developed by the NSA (United States National Secur-

ity Association). It is rated as secure, but is slower than MD5.

It is used with a 96 bit digest length for IPSec.

Note that RipeMD 160 and Tiger 192 are not available for mes-

sage hashing in phase 2.

Use PFS Group As PFS (Perfect Forward Secrecy) requires another Diffie-

Hellman key calculation to create new encryption material, you

must select the exponentiation features. If you enable PFS ( En-

abled), the options are the same as for the configuration in

Phase 1: Group. PFS is used to protect the keys of a renewed

phase 2 SA, even if the keys of the phase 1 SA have become

known.

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Funkwerk WI2040n Bedienungsanleitung Seite 295