ZyXEL Communications VPN Series Handbook page 748

How to setup Two-Factor Authentication for admin login
2 Factor Authentication is a function can prevent your device login by hacker.
It needs additional verification code after logged into WebGUI/SSH/Telnet
You can follow these steps to setup 2 factor authentication when logging to
system.
Setup SMTP function on your device
Go to CONFIGURATION > System > Notification > Mail Server Field your SMTP serve
configuration.
a. Mail server
b. Mail server ports
c. Mail From
d. SMTP Authentication
www.zyxel.com
748/810