I have a Draytek Vigor 2862 that I am trying to configure SSL on. I have imported the Comodo Cert in as a Local Certificate, added the intermediate certificates as trusted certificates and then access the router over HTTPS and all looks ok in Firefox.
The problem comes when I look at SSLLabs.com and get a "Chain Issues" error capping the score as a B. It looks as though only the signed certificate is being downloaded and the intermediate certificate is not.
I have tried chaining the 2 together, but the router doesn't like that and throws errors about the file format.
I am running the latest firmware (220.127.116.11_BT). The releases notes say that the firmware should now support longer certificates / chains.