What ports will I need to open inbound and outbound from the KMS server traffic?
You will need to open 80 and 443.
Does Kaltura feature a "Video Portal" like YouTube UI and features?
Yes, please refer to Kaltura MediaSpace Video Portal .
What version of Linux is supported?
Software requirements lay out the different components that must be installed. All of these components are cross-platform, therefore the Linux version is irrelevant.
How much disk space and RAM does the KMS server need?
The KMS application, logs, and cache consume around 53MB. Normal disk space in multiples of tens of GB should be sufficient for this release.