SIMP builds and configures centralized YUM repositories which are hosted on the SIMP server. These repositories host all of the packages that are needed to install a SIMP server and client. Additionally, all of the packages available on a CentOS/RedHat ISO are also placed in a repository.
All of the repositories installed by the SIMP module require packages to the signed with a known GPG key.
References: :ref:`CM-7 (5)`