LEAF is a secure, feature-rich, customizable embedded Linux network appliance for use in a variety of network topologies. Although it can be used in other ways, it's primarily used as a Internet gateway, router, firewall, and wireless access point.
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Beta2 finishes the kernel review to shrink the kernel and boot images and add speed improvements for the i686 kernel. Bugs and annoyances from the first beta have been fixed. The usual updates of upstream packages have been added.