ZyXEL Communications P-335WT User Manual

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P-335 Series User’s Guide
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Chapter 13 VPN Screens
This may be unnecessary for data that does not require such security, so PFS is disabled 
(None) by default in the Prestige. Disabling PFS means new authentication and encryption 
keys are derived from the same root secret (which may have security implications in the long 
run) but allows faster SA setup (by bypassing the Diffie-Hellman key exchange).
13.12  Advanced Rule Setup Screen
Select Advanced at the bottom of the Rule Setup screen. The following screen displays.