A policy package is a collection of different types of policies. After installation, the Security Gateway enforces all the policies in the package. A policy package can have one or more of these policy types:
The installation process:
If there are verification errors, the policy is not installed. If there are verification warnings (for example, if anti-spoofing is not enabled for a Security Gateway with multiple interfaces), the policy package is installed with a warning.

Explanation
Explanation/Reference: https://solvingcenter.wordpress.com/2016/07/07/checkpoint-backup-and-snapshot/

Explanation
These are basic access control rules we recommend for all Rule Bases:
* Stealth rule that prevents direct access to the Security Gateway.
* Cleanup rule that drops all traffic that is not allowed by the earlier rules.
There is also an implied rule that drops all traffic, but you can use the Cleanup rule to log the traffic.

There are three types of Software Containers: Security Management, Security Gateway, and Endpoint Security.
Reference:
http://downloads.checkpoint.com/dc/download.htm?ID=11608