1. Import the root and intermediate CA certificates (they can be usually found on the website of your preferred certification authority).
2. In the GUI, go to System Settings > Certificates > CA Certificates > Import.Or open the certificate in a text editor, copy the certificate and use the following commands to import it:config system certificate ca
edit "EXAMPLE_root_CA"
set ca “” next end Example config system certificate ca edit "Comodo-CA" set ca "-----BEGIN CERTIFICATE----- MIIFGjCCBAKgAwIBAgIQbRnqpxlPajMi5iIyeqpx3jANBgkqhkiG9w0BAQUFADCB rjELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAlVUMRcwFQYDVQQHEw5TYWx0IExha2Ug Q2l0eTEeMBwGA1UEChMVVGhlIFVTRVJUUlVTVCBOZXR3b3JrMSEwHwYDVQQLExho dHRwOi8vd3d3LnVzZXJ0cnVzdC5jb20xNjA0BgNVBAMTLVVUTi1VU0VSRmlyc3Qt Q2xpZW50IEF1dGhlbnRpY2F0aW9uIGFuZCBFbWFpbDAeFw0xMTA0MjgwMDAwMDBa Fw0yMDA1MzAxMDQ4MzhaMIGTMQswCQYDVQQGEwJHQjEbMBkGA1UECBMSR3JlYXRl ciBNYW5jaGVzdGVyMRAwDgYDVQQHEwdTYWxmb3JkMRowGAYDVQQKExFDT01PRE8g Q0EgTGltaXRlZDE5MDcGA1UEAxMwQ09NT0RPIENsaWVudCBBdXRoZW50aWNhdGlv biBhbmQgU2VjdXJlIEVtYWlsIENBMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIB CgKCAQEAkoSEW0tXmNReL4uk4UDIo1NYX2Zl8TJO958yfVXQeExVt0KU4PkncQfF xmmkuTLE8UAakMwnVmJ/F7Vxaa7lIBvky2NeYMqiQfZq4aP/uN8fSG1lQ4wqLitj OHffsReswtqCAtbUMmrUZ28gE49cNfrlVICv2HEKHTcKAlBTbJUdqRAUtJmVWRIx /wmi0kzcUtve4kABW0ho3cVKtODtJB86r3FfB+OsvxQ7sCVxaD30D9YXWEYVgTxo i4uDD216IVfmNLDbMn7jSuGlUnJkJpFOpZIP/+CxYP0ab2hRmWONGoulzEKbm30i Y9OpoPzOnpDfRBn0XFs1uhbzp5v/wQIDAQABo4IBSzCCAUcwHwYDVR0jBBgwFoAU iYJnfcSdJnAAS7RQSHzePa4Ebn0wHQYDVR0OBBYEFHoTTgB0W8Z4Y2QnwS/ioFu8 ecV7MA4GA1UdDwEB/wQEAwIBBjASBgNVHRMBAf8ECDAGAQH/AgEAMBEGA1UdIAQK MAgwBgYEVR0gADBYBgNVHR8EUTBPME2gS6BJhkdodHRwOi8vY3JsLnVzZXJ0cnVz dC5jb20vVVROLVVTRVJGaXJzdC1DbGllbnRBdXRoZW50aWNhdGlvbmFuZEVtYWls LmNybDB0BggrBgEFBQcBAQRoMGYwPQYIKwYBBQUHMAKGMWh0dHA6Ly9jcnQudXNl cnRydXN0LmNvbS9VVE5BZGRUcnVzdENsaWVudF9DQS5jcnQwJQYIKwYBBQUHMAGG GWh0dHA6Ly9vY3NwLnVzZXJ0cnVzdC5jb20wDQYJKoZIhvcNAQEFBQADggEBAIXW vnhXVW0zf0RS/kLVBqgBA4CK+w2y/Uq/9q9BSfUbWsXSrRtzbj7pJnzmTJjBMCjf y/tCPKElPgp11tA9OYZm0aGbtU2bb68obB2v5ep0WqjascDxdXovnrqTecr+4pEe VnSy+I3T4ENyG+2P/WA5IEf7i686ZUg8mD2lJb+972DgSeUWyOs/Q4Pw4O4NwdPN M1+b0L1garM7/vrUyTo8H+2b/5tJM75CKTmD7jNpLoKdRU2oadqAGx490hpdfEeZ pZsIbRKZhtZdVwcbpzC+S0lEuJB+ytF5OOu0M/qgOl0mWJ5hVRi0IdWZ1eBDQEIw vuql55TSsP7zdfl/buc= -----END CERTIFICATE-----" next end
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