How to set up self-signed cert to access web GUI from WAN interface without "Not Secure" warning?

Zyxel_James Posts: 626  Zyxel Employee
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Question: When users access the web GUI from the internet, the HTTPS not secure warning always shows up. How to avoid it?


Navigate to Configuration > Object > Certificate > My Certificates, and click +Add to generate a self-signed certificate.

  • Input the WAN IP address to Host IP Address
  • Enable Server Authentication
  • Tick Create a self-signed certificate

Export the certificate and download it to your PC

Navigate to Configuration > System > WWW > Service Control, and select the certificate we just generated (WEB_GUI_access), and click Apply

Now let's import the self-generated certificate.

Press Windows + R keys on the keyboard and type "mmc"

In the mmc console, click Add/Remove Snap-in…

  • Select Certificates and Add > it to the "Selected snap-ins:"
  • Select Computer account and Next

Open Certificates(Local Computer) > Trusted Root Certificate Authorities, and then right-click on Certificate > All Tasks > Import

Select the certificate we just generated, then we're finished

Test Result: You will the URL shows locked and safe