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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. Don't forget to include the subdomain if your single address includes a subdomain.

Certificates are used within a cryptographic system known as a public key infrastructure (PKI). PKI provides a way for one party to establish the identity of another party using certificates if they both trust a third-party - known as a certificate authority.

Certificate contains this information Version and serial number. Information about the issuer: country, state, city, organization, organization unit common name, email. Validity: not before date, not after date. Information about the the subject: country, state, city, organization, organization unit, common name, email.

Why is this important? There are two very significant reasons. First, checking mail without using SSL means anyone with a device on the same network can eavesdrop on your communications. They can use commonly available tools, such as Wireshark, to read your email as it transits the network.

An SSL certificate secures your website to protect important customer data from cybercriminals. If you collect personal information from customers, whether it's credit card numbers or something as simple as an email address, your website needs an SSL certificate, even if you don't sell anything.

The Subject field of the certificate must identify the primary hostname of the server as the Common Name. A certificate may be valid for multiple hostnames (e.g., a domain and its subdomains).

The key usage extension defines the purpose (for example, encipherment, signature, or certificate signing) of the key contained in the certificate. If the public key is used for entity authentication, then the certificate extension should have the key usage Digital signature.

Websites need SSL certificates to keep user data secure, verify ownership of the website, prevent attackers from creating a version of the site, and convey trust to users.

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. Don't forget to include the subdomain if your single address includes a subdomain.

Certificates are used within a cryptographic system known as a public key infrastructure (PKI). PKI provides a way for one party to establish the identity of another party using certificates if they both trust a third-party - known as a certificate authority.

Certificate contains this information Version and serial number. Information about the issuer: country, state, city, organization, organization unit common name, email. Validity: not before date, not after date. Information about the the subject: country, state, city, organization, organization unit, common name, email.

Why is this important? There are two very significant reasons. First, checking mail without using SSL means anyone with a device on the same network can eavesdrop on your communications. They can use commonly available tools, such as Wireshark, to read your email as it transits the network.

An SSL certificate secures your website to protect important customer data from cybercriminals. If you collect personal information from customers, whether it's credit card numbers or something as simple as an email address, your website needs an SSL certificate, even if you don't sell anything.

The Subject field of the certificate must identify the primary hostname of the server as the Common Name. A certificate may be valid for multiple hostnames (e.g., a domain and its subdomains).

The key usage extension defines the purpose (for example, encipherment, signature, or certificate signing) of the key contained in the certificate. If the public key is used for entity authentication, then the certificate extension should have the key usage Digital signature.

Websites need SSL certificates to keep user data secure, verify ownership of the website, prevent attackers from creating a version of the site, and convey trust to users.