Subject Alternative Name
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Subject Alternative Name (SAN) is an extension to X.509 that allows various values to be associated with a security certificate using a subjectAltName field.[1] These values are called "Subject Alternative Names" (SANs). Names include:[2]
- Email addresses
- IP addresses
- URIs
- DNS names (This is usually also provided as the Common Name RDN within the Subject field of the main certificate.)
- directory names (alternative Distinguished Names to that given in the Subject)
- other names, given as a General Name: a registered[3] Object identifier followed by a value
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