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VRT-401 User Manual
IKE Phase 2 (IPsec SA)
IPsec SA Life
Time
IPSec PFS
AH Authentication
ESP Encryption
ESP Authentica-
tion
For IKE, configuration is now complete.
Click "Next" to view the final screen.
On the final screen, click "Finish" to save your settings, then "Close" to exit the
Wizard.
This setting does not have to match the remote VPN end-
point; the shorter time will be used. Although measured in
seconds, it is common to use time periods of several hours,
such 28,800 seconds.
If enabled, PFS (Perfect Forward Security) enhances security
by changing the IPsec key at regular intervals, and ensuring
that each key has no relationship to the previous key. Thus,
breaking 1 key will not assist in breaking the next key.
AH (Authentication Header) specifies the authentication
protocol for the VPN header, if used.
AH is often NOT used. If you do enable it, ensure the algo-
rithm selected matches the other VPN endpoint.
ESP (Encapsulating Security Payload) provides security for
the payload (data) sent through the VPN tunnel. Generally,
you will want to enable both ESP Encryption and ESP Authen-
tication.
Select the desired method, and ensure the remote VPN
endpoint uses the same method. The "3DES" algorithm
provides greater security than "DES", but is slower.
Generally, you should enable ESP Authentication. There is
little difference between the available algorithms. Just ensure
each endpoint use the same setting.
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