CA invalid SSL error

MariusVoicu79 Posts: 16
First Comment
 Freshman Member
edited March 17 in Security


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?


All Replies

  • Zyxel_Kevin
    Zyxel_Kevin Posts: 582
    Zyxel Certified Network Administrator - Security Zyxel Certified Sales Associate 50 Answers 500 Comments
     Zyxel Employee

    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:

    2)And select my certificate for HTTPS Serve CA

    3)I can connect HTTPS without warining.

    (It have to use Domain:

    Thank you

  • MariusVoicu79
    MariusVoicu79 Posts: 16
    First Comment
     Freshman Member

    Thnks! I have already read about selfsigned CA.

Security Highlight