ZyXEL Communications ZyXEL ZyWALL 35 Quick Start Manual page 17

Internet security appliance

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Use the forth wizard screen to configure IPSec settings and click Next to continue.

This read-only screen shows a summary of the VPN rule's settings. Check whether what you have

configured is correct.

ZyWALL 35 Internet Security Appliance

Choose Tunnel mode or Transport mode.

Choose which protocol to use (ESP or AH)

for the IKE key exchange.

Choose an encryption algorithm or select

NULL to set up a tunnel without encryption.

Choose an authentication algorithm.

Set the IPSec SA lifetime. This field allows

you to determine how long the IPSec SA

should stay up before it times out.

Choose whether to enable Perfect Forward

Secrecy (PFS) using Diffie-Hellman public-

key cryptography. Select None (the default)

to disable PFS. DH1 refers to Diffie-Hellman

Group 1 a 768 bit random number. DH2

refers to Diffie-Hellman Group 2 a 1024 bit

(1Kb) random number (more secure, yet

slower).

Click Finish to save and complete the wizard

setup. Otherwise, click Back to return to the

previous screen.

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