Create Certificate Request
Click Security > Certificates > Local Certificates and then Create Certificate Request to open the following screen. Use this screen to have the Zyxel Device generate a certification request. To create a certificate signing request, you need to enter a common name, organization name, state or province name, and the default US two-letter country code (The US country code is by default and not changeable when sold in the U.S.) for the certificate.
Security > Certificates > Local Certificates: Create Certificate Request
The following table describes the labels in this screen.
Security > Certificates > Local Certificates: Create Certificate Request 
Label
Description
Certificate Name
Enter a descriptive name to identify this certificate. You can use up to 63 printable characters except [ " ], [ ` ], [ ' ], [ < ], [ > ], [ ^ ], [ $ ], [ | ], [ & ], or [ ; ]. Spaces are allowed.
Common Name
Select Auto to have the Zyxel Device configure this field automatically. Or select Customize to enter it manually.
Enter the IP address (in dotted decimal notation), domain name or email address in the field provided. You can use up to 63 printable characters except [ " ], [ ` ], [ ' ], [ < ], [ > ], [ ^ ], [ $ ], [ | ], [ & ], or [ ; ]. Spaces are allowed. The domain name or email address is for identification purposes only and can be any string.
Organization Name
Enter a descriptive name to identify the company or group to which the certificate owner belongs. You can use up to 32 printable characters except [ " ], [ ` ], [ ' ], [ < ], [ > ], [ ^ ], [ $ ], [ | ], [ & ], or [ ; ]. Spaces are allowed.
State/Province Name
Enter a descriptive name to identify the state or province where the certificate owner is located. You can use up to 32 printable characters except [ " ], [ ` ], [ ' ], [ < ], [ > ], [ ^ ], [ $ ], [ | ], [ & ], or [ ; ]. Spaces are allowed.
Country/Region Name
Select a country to identify the nation where the certificate owner is located.
Cancel
Click Cancel to exit this screen without saving.
OK
Click OK to save your changes.