What is SAN in SSL certificate?

The Subject Alternative Name Field Explained The Subject Alternative Name field lets you specify additional host names (sites, IP addresses, common names, etc.) to be protected by a single SSL Certificate, such as a Multi-Domain (SAN) or Extend Validation Multi-Domain Certificate.

What is SAN attribute?

SAN attributes take the following form: san:dns=dns.name[&dns=dns.name] Multiple DNS names are separated by an ampersand (&). For example, if the name of the domain controller is corpdc1.fabrikam.com and the alias is ldap.fabrikam.com, both names must be included in the SAN attributes.

What is SAN list 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.

What is CN and SAN in certificate?

Originally, SSL certificates only allowed the designation of a single host name in the certificate subject called Common Name (CN) but now this has undergone change and a certificate is first verified for SAN and if no SAN is defined it falls back to CN.

What is a SAN value?

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. These values are called Subject Alternative Names (SANs). Names include: Email addresses.

Why SAN is required?

SAN Certificates are often needed to secure Exchange Server or Office Communications Server and in instances where you need to secure multiple domains that resolve to a single IP address (such as in a shared hosting environment).

How do I get a SAN certificate?

Generate CSR from Windows Server with SAN (Subject Alternative Name)

  1. Run “certlm.msc” to open the Certificate – Local Computer.
  2. Right click on Personal and select All Tasks – Advanced Operations – Create Custom Request.

How can I check my SAN certificate?

Browse to you Domain api.your-domain.com in your browser, click on the lock icon, and check the Cert’s details.

  1. Checking your Subject Alternative Name (SAN)
  2. Internally Signed Certs/Self-Signed Certs.
  3. Publicly Signed Certs.

How do SAN certs work?

In cybersecurity, a SAN certificate means an SSL/TLS certificate that is capable of securing multiple domains or subject alternative names (SAN) under a single certificate. A user can customize the SAN certificate anytime during its validity period to add multiple subject names (up to 250) to the certificate.

How do I add a SAN to my certificate?

Add SANs to your multi-domain certificate

  1. Step 1: Generate CSR.
  2. Step 2: Sign in to your account.
  3. Step 3: Fill out the reissue form.
  4. Step 4: Complete domain control validation (DCV)
  5. Step 5: DigiCert reissues the multi-domain SSL/TLS certificate.
  6. Step 6: Install your reissued SSL/TLS certificate.

How much does a SAN certificate cost?

SAN SSL or SAN Certificates starting at $18 per year.