The authenticity of the self-signed certificate that comes with the unit by default is not enforced as usual with the Public Key Infrastructure. To be more secure, you can use a fully trusted certificate signed by a certificate authority instead.
Before you begin
- Cloud Link Roadrunner™
- Synergis™ Cloud Link
- Legacy Synergis™ Cloud Link running Synergis™ Softwire 11.2 or later
For more information, see Unit certificate management. If your access control units do not support the Security Center unit certificate management feature, install signed certificates using the following procedure.
What you should know
- Using certificates signed by a certificate authority is better for setups where multiple computers and browsers access the Synergis™ unit because you do not need to configure each browser to recognize these trusted certificates.
- The Synergis™ Cloud
Link unit comes
with an ECDSA certificate by default. When you try to enroll a new Synergis™ Cloud
Link unit on a system running an operating system
that lacks support for ECDSA, the enrollment fails because no compatible cipher is
If the enrollment fails, upgrade your operating system to one that supports ECDSA or generate a new RSA certificate on the unit and then try enrolling the unit again.
- Log on to the Synergis™ unit.
- Click .
In the Certificate
management section, complete the identification fields.
The Common name field contains the unit's hostname by default. The Subject alternative name field also contains the hostname by default, but can be edited to a comma-separated DNS list.NOTE: The Common name, Subject alternative name, and Country fields are mandatory.
From the Certificate type list, select one of the
following algorithms and key lengths:
- ECDSA 256 bits
- ECDSA 384 bits
- RSA 2048 bits
- RSA 3072 bits
- RSA 4096 bits
Create certificate signing request.
A .req file is generated, containing the public portion of the certificate. The file does not contain the private key and is therefore not confidential.
In Windows File Explorer, navigate to your Downloads folder, and then copy the
signing request .req file and send it to a certificate
After verification, the certificate authority signs the public portion of the certificate with its own private key.
After you receive the certificates from the certificate authority, import the
- Log back on to the unit and click .
- In the Import signed certificate section, click Select certificate and browse to the folder with the certificates.
Select the first certificate and click Upload.
Repeat for the remaining certificates.
NOTE: Each certificate in the certificate chain must be uploaded individually, or in one operation if you received a .p7b collection file. If you received the collection file, you can omit uploading the root certificate.
After you finish
For more information, see Resetting the trusted certificate.