Check SAN Subject Alternative Name certificates
Posted: Mon Feb 10, 2025 7:11 am
Sometimes an SSL certificate will specify a subdomain as the common name for example, domain.exampleom. If you are using a wildcard certificate for a subdomain and you see the NET::ERR_CERT_COMMON_NAME_INVALID error, there is a higher chance that the SSL certificate does not include the subdomain you are trying to visit.
So, when checking an SSL certificate, always keep in mind that wildcard SSL certificates only protect one level of subdomains. For example, you need to have another certified or exampleom and subdomain.exampleom.
A SAN Subject Alternative Name certificate is a argentina mobile database type of SSLTLS certificate that is used to secure multiple domain names andor IP addresses with a single certificate. This is useful for organizations that manage multiple domains and TLD variants because it simplifies certificate management and reduces costs.
If your organization uses a SAN certificate for a website, check the certificate details for the list of domains it protects. If the web address is not listed, the certificate does not cover it.
2. Check if your website uses a self-signed SSL certificate
However, self-signed SSL certificates are best suited for testing purposes and are typically created by users for use in local environments or private internal networks.
Traditionally, they are not issued by a trusted certificate authority CA, so they do not have the full security that trusted certificates provide. Therefore, they are not trusted or fully recognized by browsers to provide secure access to public websites.
So, when checking an SSL certificate, always keep in mind that wildcard SSL certificates only protect one level of subdomains. For example, you need to have another certified or exampleom and subdomain.exampleom.
A SAN Subject Alternative Name certificate is a argentina mobile database type of SSLTLS certificate that is used to secure multiple domain names andor IP addresses with a single certificate. This is useful for organizations that manage multiple domains and TLD variants because it simplifies certificate management and reduces costs.
If your organization uses a SAN certificate for a website, check the certificate details for the list of domains it protects. If the web address is not listed, the certificate does not cover it.
2. Check if your website uses a self-signed SSL certificate
However, self-signed SSL certificates are best suited for testing purposes and are typically created by users for use in local environments or private internal networks.
Traditionally, they are not issued by a trusted certificate authority CA, so they do not have the full security that trusted certificates provide. Therefore, they are not trusted or fully recognized by browsers to provide secure access to public websites.