Draytek Vigor2136 Series User Manual page 162

To add a new certificate, click the +Add link to get the following page.
Available settings are explained as follows:
Item
Certificate Name
Method
Description
Enter the name that identifies the certificate.
Generate CSR - Generate a new local certificate.
Import Certificate & Keys - Vigor router allows you to generate a
certificate request and submit it the CA server, then import it as "Local
Certificate". If you have already gotten a certificate from a third party,
you may import it directly. The supported types are PKCS12 Certificate
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