Podman - User Guide - 2 - Cortex XPANSE - Cortex - Security Operations

Podman is a daemonless container engine for developing, managing, and running OCI Containers on the Linux System. Containers can either be run as root or in rootless mode.

If you use the Shell installer to install an engine, Cortex Xpanse automatically detects the container management type based on the operating system. For example, if your operating system is running RHEL v8 and higher, Cortex Xpanse installs Podman packages and configures the operating system to enable Podman in rootless mode.

By default, Podman uses the $HOME/.local/share/containers/storage directory. To use a different directory for container storage, edit the Podman config file located at /home/demisto/.config/containers/storage.conf. If the file does not exist, create it and change the ownership:

To set a different directory for container storage, change the key: rootless_storage_path in the storage.conf file. For example, rootless_storage_path=/var/lib/containers/$USER/storage

The new storage directory needs to be owned by the demisto user, otherwise they will be denied access to it. To assign the demisto user ownership of the new storage directory, on the Linux command line, run chown -R demisto:demisto <NEW-LOCATION>.

Do not use NAS storage for the $HOME directory. The directory needs to be a local directory for Podman to work.

If using PowerShell integrations, you may need to configure the default SELinux policy as Podman can affect processes which mmap to /dev/zero.

Docker Hardening Guidelines

Docker hardening guidelines can be applied to Podman, with the exception of Limit Available Memory, Limit Available CPU, and Limit PIDS.