Configure apache2 to use comodo essential ssl certificate

• Generate key: openssl genrsa -out ssl_subdomain_com.key 2048
• Create CSR: openssl req -new -key ssl_subdomain_com.key -out ssl_subdomain_com.csr
• Check CSR: openssl req -noout -text -in ssl_subdomain_com.csr
• Get your certificate from comodo
• Chain certificate download from comodo https://support.comodo.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=964 → essential.cabundle
• Get CRT after registration → ssl_subdomain_com.crt
• Append chain certificate to crt: cp ssl_subdomain_com.crt ssl_subdomain_com.bundle.crt cat essential.cabundle » ssl_subdomain_com.bundle.crt

Configure apache2 w/gntls

    GnuTLSEnable on
    GnuTLSPriorities NORMAL
    GnuTLSCertificateFile /etc/ssl-cacert/apache/ssl_subdomain_com.bundle.crt
    GnuTLSKeyFile         /etc/ssl-cacert/apache/ssl_subdomain_com.key

Configure apache2 with openssl → https://support.comodo.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=264

Ref: https://support.comodo.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=264

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