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self signed certificate + loading ca problem

  • Hello,
    I have some servers with self signed certs (signed by one ca) and I want to trust these websites. Unfortunatelly I'm receiving all the time warning about wrong certificate. My system is linux mint 19 and opera version 56. What I've tried to do:

    • load ca crt file into opera (setting -> advanced -> sec -> manage certs -> cert authorities)
    • load ca crt into system (cp crt /usr/local/share/ca-certificates/ && update-ca-certificates OR cp crt /usr/share/ca-certificates/extra && dpkg-reconfigure ca-certificates)
    • enabled option "Allow invalid certificates for resources loaded from localhost." in opera://flags

    I've imported my ca into firefox and there my website is working fine without any warning.
    Dear Opera could you give us a proper way to import ca and get rid of this annoying warning?


  • Is the server on localhost (i.e., your own computer), on your LAN, or accessible over the internet? The error suggests that the name on the certificate doesn't match the domain name.

  • this is server in LAN - fqdn is mapped in /etc/hosts and is the same like CN in server crt.
    ps. date of expiration is fine also