Generally, you need an internet connection when downloading and subscribing to content packs in the Marketplace, as all of these services are in the cloud.
However, you can download content packs on a machine that has internet access and transfer them to a machine (without an internet connection) to the Marketplace, by doing one of the following:
All content pack dependencies are included.
Before you begin, it is recommended that you Configure the Marketplace for Offline Installation in order to maximize performance.
Install individual content packs.
The Cortex XSOAR Developer Marketplace contains the same content packs that you can install in Cortex XSOAR.
Click the content pack to download, as required.
Click Download with Dependencies.
Go to Marketplace, click and then select Upload Content Packs.
Upload the relevant file.