What is subject alternative name in certificate?

A SAN or subject alternative name is a structured way to indicate all of the domain names and IP addresses that are secured by the certificate. Included on the short list of items that are considered a SAN are subdomains and IP addresses.

Is Subject Alternate name Required?

Yes, you need to include each of the subject alternate names and the subject/common name in the Subject Alternate Names section of the CSR. Some certificate authorities will allow you to update a certificate to add new SANs to it, but this always requires an updated CSR.

How many subject alternative names can a certificate have?

The majority of certificates have just 2 alt-names. This is usually because they contain both a top level domain (ie, example.com) and either a wildcard (*. example.com) or a fully qualified domain (www.example.com).

What is the SSL certificate subject alternative name ( San )?

What is the SSL Certificate Subject Alternative Name? 1 SAN certificates. A SAN certificate is a term often used to refer to a multi-domain SSL certificate. An SSL certificate with more than one name is 2 SAN restrictions. 3 SAN certificates and DNSimple. 4 Background.

How to set subject alternative name in OpenSSL?

This stuff is for subjectAltName and issuerAltname. Import the email address. subjectAltName=email:copy However this does not work. My hunch is that the subject Alternative Name is not showing up b/c it is not present in the V1 specs, which is why I’m also pursuing setting he version.

Where can I find a subject alternative name?

In the certificate details, you will find a Subject Alternative Name extension that lists both www.digicert.com and digicert.com plus some additional SANs secured by our certificate. Because the name digicert.com is listed in our certificate, your browser will not complain if you visit our site at https://digicert.com without the ‘www’ in the name.

Which is the subject name in a certificate?

A certificate normally has just a subject name, which allows only one URL for an SSL (Secure Sockets Layer) session. The SAN is an additional field in the certificate that allows an SSL service to listen for many URLs, and to share the SSL port with other applications.