Generating a New Self-Signed Certificate
If you are upgrading to HMG/HSG version 3.2 or greater, due to a new restriction of TLS certificates in certain operating systems, a new self-signed certificate with a 2-year expiration should be generated after the upgrade. See "Cannot Access Web Interface from a Computer after an OS Update" in Known Issues and Solutions for more details on the issue.
To generate a new self-signed certificate:
In the sidebar, click Security.
Click Certificates in the navigation toolbar.
Click the Generate button.
On the Generate Certificate dialog:
For the Type, select Self-Signed.
Type in a name for the certificate.
Fill in the remaining fields. See Certificate Settings.
Click the Generate button.
The new certificate is added to the Certificates list.
Select the new certificate in the State column to activate it.
Optionally, delete the old certificate.
Click the Reboot Gateway link and confirm the reboot in the resulting dialog to reboot your Gateway for the new active certificate to take effect.