Allow Custom HTTPS SSL Certificate Upload for GS1200-8 v3

xyno

TL;DR: While the new HTTPS support in the GS1200-8 v3 is appreciated, the hardcoded self-signed certificate triggers browser warnings and lacks true MitM protection. Please add an option in the WebUI to upload custom SSL certificates (.crt/.key).

​Following up on the announcement regarding HTTPS support being added to the new GS1200-8 v3 (Reference:

https://community.zyxel.com/en/discussion/comment/82468#Comment_82468

), I am writing to submit a follow-up feature request to complete this security implementation.

​While I really appreciate the addition of HTTPS support in the v3 hardware, the current implementation has a significant limitation: it only uses a hardcoded self-signed certificate and lacks an option for users to upload their own custom SSL certificates.

​In practice, this renders the HTTPS feature incomplete for the following reasons:

1. ​Ineffective against MitM Attacks: Without the ability to use a certificate signed by a trusted CA (public or internal), administrators cannot verify the identity of the switch. This defeats the authentication purpose of HTTPS and offers no real protection against Man-in-the-Middle attacks on the local network.

2. ​Poor User Experience: Modern browsers constantly flag the WebUI with red "Not Secure" warnings, requiring manual bypasses every time we log in.

3. ​Incompatibility with Modern LAN Infrastructure: Many prosumers and SMBs manage their own local DNS and valid SSL certificates (e.g., Let's Encrypt or an Internal PKI). The inability to import a .crt/.key pair prevents this switch from integrating seamlessly into existing security architectures.

​Request:

Please consider adding a simple feature in a future firmware update that allows users to upload their own SSL certificate (.crt/.pem) and private key (.key) via the WebUI.

​This small addition would drastically improve the security posture and professional appeal of the GS1200 series. Thank you to the development team for your time and consideration!