Sunday, October 27, 2019

Can a single SSL server certificate cover multiple ports per domain name?

Yes, a single SSL server certificate can cover multiple ports for the same domain name. As an example, the certificate for myserver.mydomain.com will work for:
https://myserver.mydomain.com; and
https://myserver.mydomain.com:8888

A specific port number should not be specified in the CN (Common Name) field. If a port number is included as part of the CN (Common Name) then our system will not accept the Certificate Signing Request (CSR) as valid.



References:
https://support.comodo.com/index.php?/Knowledgebase/Article/View/326/17/can-a-single-ssl-server-certificate-cover-multiple-ports-per-domain-name



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