SupportAssist on a private network or intranet?

Hi,

I am used to using Dell SupportAssist on a public network that has free access to the internet.

Now I have a new job that uses a private network that does not have direct access to the internet. There is a web portal that can be used but that is accessed by a remote desktop connection to a proxy.

Therefore if I was to install Dell SupportAssist on the computers we support that are on the private network, then Support Assist will not be able to talk to the Dell SupportAssist server.

I know that I can input the Service Tag of a particular Dell computer on the Dell support home https://www.dell.com/support/home/en-us and download the drivers individually and manually over the portal.  However I like the fact that the Dell SupportAssist would scan a particular computer and give indication of what particular drivers are out of date and need updating.

Is there a quick and efficient way to know what Dell drivers are outdated on a Dell computer and need to be updated without using Dell SupportAssist that has a direct connection to the internet?