Search results
Results from the WOW.Com Content Network
The Common Name (AKA CN) represents the server name protected by the SSL certificate. The certificate is valid only if the request hostname matches the certificate common name. Most web browsers display a warning message when connecting to an address that does not match the common name in the certificate.
The Common Name (CN), also known as the Fully Qualified Domain Name (FQDN), is the characteristic value within a Distinguished Name (DN). Typically, it is composed of Host Domain Name and looks like, "www.digicert.com" or "digicert.com".
The Common Name is typically composed of Host + Domain Name and will look like www.yoursite.com or yoursite.com. SSL Server Certificates are specific to the Common Name that they have been issued to at the Host level.
Assuming the Subject Alternative Name (SAN) property of an SSL certificate contains two DNS names. domain.example. host.domain.example. but the Common Name (CN) is set to only one of both: CN=domain.example.
In this tutorial, we’ll learn about the common name and subject alternative name attributes in the X.509 certificate. Besides that, we’ll demonstrate the method for extracting those fields using the openssl command-line tool.
An SSL certificate common name plays a vital role in ensuring website security by providing a secure connection between the site and its users. A properly configured security certificate can prevent unauthorized access, data breaches, and man-in-the-middle attacks, among other security threats.
Placing a DNS name or server name in the Common Name (CN) is deprecated by both the IETF and CA/Browser Forums. Though deprecated, it's currently not prohibited. The CA/B is important because that's what browsers follow - browsers do not follow the IETF.
When a certificate, or an identity extracted from a certificate, is "shown" to a human user, the Common Name will figure proeminently. For instance, if using smart card logon on a Windows system, then the logon screen will show the Common Name in big letters when the smart card is inserted.
Single vs Multi names. You can associate the host names to an SSL certificate using two different attributes: the Common Name. the Subject Alternative Name (SAN) The Common Name allows specifying a single entry (either a wildcard or single-name), whereas the SAN extension supports multiple entries.
As part of generating an SSL certificate you will be asked for the common name. The common name is the domain name you wish to secure with your certificate. If you are creating a single domain certificate, entering the common name is straightforward: it is the single domain you wish to secure.