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Chapter 3
Configuration via Local Pages
Page layout with
additional Networks
IKE Security Descriptor
66
Clicking Specify Additional Networks allows you to designate up to four addresses/
subnets in case the Local Trusted Network can not be described by a single address/
subnet.
The IKE Security Descriptor bundles the security parameters used for the IKE
Security Association (Phase1).
A number of IKE Security Descriptors are pre-configured in the SpeedTouch™, and
can be selected from a list. Select a Security Descriptor in function of your security
requirements. The remote VPN clients must comply with the IKE security
parameters configured in the VPN server.
For example, the pre-configured IKE Security Descriptor AES_MD5, used in various
examples throughout this document, contains the following settings:
Parameter
Cryptographic function
Hash function
Diffie-Hellman group
IKE SA lifetime in seconds.
The contents of the IKE Security Descriptors can be verified via
Advanced > Peers > Security Descriptors.
It is recommended to use AES as preferred encryption method. AES is more
advanced, compared to DES or 3DES. It is faster for comparable key
lengths, and provides better security.
The IKE Security Descriptor bundles the security parameters used for the IKE
Security Association (Phase1).
Value for
AES_MD5
AES
HMAC-MD5
MODP768 (= group 1)
3600 seconds (= 1 hour)
E-DOC-CTC-20051017-0169 v0.1
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