Contributing

What is subjectAltName in SSL?

Standard

What is subjectAltName in SSL?

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. Background.

Can I create SSL certificate for IP address?

The answer is ‘Yes. ‘ An SSL certificate can be issued for a public IP address. These are the rules and requirements to get an SSL certificate for an IP address: SSL can be issued for a public IP address.

How do I get a self-signed certificate for an IP address?

Self Signed SSL/TLS Certificate with IP Address

  1. Create a certificate request configuration file that uses a Subject Alternate Name.
  2. Use OpenSSL req command to gerenate the certificate.
  3. Verify the certificate content.
  4. Install the certificate to your server (Apache, Express, private Docker registry, etc…)

How many SANs can a CERT have?

100 SANs
SAN certificate availability: DigiCert PKI Platform allows up to 100 SANs with a single certificate.

Is SubjectAltName 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 do you add a SubjectAltName to a certificate?

Adding Subject Alternative Name (SAN) to a digital certificate

  1. Open the hosts.
  2. Add the loop back addresses and the host names.
  3. Verify if the hosts were added, by pinging each host in the Command prompt.
  4. Create a copy of the pscpki.

Are SSL Certificates tied to IP address?

SSL certificates are tied to a single IP address in so far as that you can only have one certificate bound to a given IP address. The certificates themselves are expected to match the Common Name (CN) which is typically the hostname entered into DNS and configured for the service (IMAP, HTTPS, SMTP, etc).

Are SAN certificates safe?

A SAN SSL certificate can secure both internal and external domain names using industry standard 128-256-bit encryption.

How can I check my SAN certificate name?

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.

What is multi SAN certificate?

A Multi-Domain SSL certificate, also known as a UCC, Unified Communications certificate, or SAN certificate, is a type of certificate that uses Subject Alternative Names (SANs) to secure multiple host names.

How do I add OpenSSL to SubjectAltName?

How to create a certificate using OpenSSL with Subject Alternative Name field (SAN)

  1. Download OpenSSL.
  2. Become a self-signing Certifying Authority (CA)
  3. Create a configuration file for the certificate with Subject Alternative Name.
  4. Create a Certificate Signing Request (CSR)
  5. Sign the request.