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A Certificate Signing Request (CSR) is an encoded file that provides you with a standardized way to send the relevant Certificate Authority (CA) your public key as well as some information that identifies your company and domain name – it is required prior to any installation of an SSL on a server.
When generating a CSR, the general information required will be:
– organization name
– location of the organization
– key type and size (the minimum is 2048-bit)
– the common name (EXAMPLE:www.example.com)
NOTE: If you are generating a CSR for a Wildcard SSL (for sub-domains) – the common name must start with an asterisk, which assumes any name excluding a dot-character (EXAMPLE:*example.com).
When configuring your SSL Certificates, the generated CSR will be required to be pasted into the order form.
Here are instructions for generating a CSR for these common platforms:
Apache Server (OpenSSL): Apache Server | PFX Import/Export | Ubuntu Server with Apache2
Microsoft Exchange Server: Exchange 2016 | Exchange 2013 | Exchange 2010
Microsoft IIS: IIS 10 | IIS 8/8.5 | IIS 7
Microsoft Lync: Lync 2013 | Lync 2010
Tomcat Server (Keytool): Tomcat Server | Java Based Server