ZyXEL Communications VPN Series Handbook page 322

use of the VPN tunnel (factor 2). If user does not click the link, then the Zyxel Device
terminates the VPN connection.
via SMS or email by the Cloud SMS system within a specified deadline (Valid Time). If
the authorization is correct and received on time, then the client can have VPN
access to the secured network. If the authorization deadline has expired, then the
client will have to run the VPN client again. If authorization credentials are incorrect or
if the SMS/email was not received, then the client must check with the network
administrator.
The following is authorized example by email and SMS
Authorized by email link
1. Received authorization mail with authorize link.
2. Click the "Authorize" to authorization.
3. After we see "VPN connection has been authorized", we can access the
secured network behind the ZyWALL/USG.
The
client should access the authorization link sent
www.zyxel.com
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