CA invalid SSL error

MariusVoicu79
MariusVoicu79 Posts: 16  Freshman Member
First Comment
edited March 2023 in Security

Hello,

I have a problem with the CA issued by zyxel. When accessing the firewall ATP200 the browser says that is not valid(not secure connection via HTTPS). The CA is valid until 2034 and is imported in the Windows Client Trusted CA. What am I missing?

Thanks!

All Replies

  • Zyxel_Kevin
    Zyxel_Kevin Posts: 934  Zyxel Employee
    Zyxel Certified Network Administrator - Security Zyxel Certified Sales Associate 100 Answers 500 Comments

    Hi @MariusVoicu79 ,

    Greeting Forum, Not only windoes must have trusted CA, but also the CN name in the certificate msut be matched when you input the URL. For example:

    1)I created the self-sign CA with CN: www.kevin.com

    2)And select my certificate for HTTPS Serve CA

    螢幕擷取畫面 2023-03-20 101900.jpg

    3)I can connect HTTPS without warining.

    (It have to use Domain: www.kevin.com)

    螢幕擷取畫面 2023-03-20 102052.jpg

    Thank you

  • MariusVoicu79
    MariusVoicu79 Posts: 16  Freshman Member
    First Comment

    Thnks! I have already read about selfsigned CA.

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