ZyXEL Communications ZyWALL 110 Handbook page 206

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address range of the network connected to the ZyWALL/USG (Address Object
created in Step 1)
VPN > Site-to-site > IPsec Policies > Basic Settings
Then, go to Advanced Settings enable PFS and DPD if you enable both options in
the ZyWALL/USG. Set IKE Policy to be the IKE Policy created in Step 2 (found under
IKE Policy Link); set Transform to be the Transform Set created in Step 3 (found
under Transform Link) and SA-Lifetime to be 24 hours.
Click OK. The connection active dialog box appears. Click Activate Connection.
VPN > Site-to-site > IPsec Policies > Advanced Settings
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