# LXD > This is the documentation for LXD, a system container and virtual machine manager. 2014-2026 AGPL-3.0, LXD contributors ## Pages in this subsection - [How to configure your firewall](https://canonical.com/lxd/docs/default/howto/network_bridge_firewalld/index.html.md): This guide applies to managed bridge networks only. ## Optional - [Top-level llms.txt](https://canonical.com/lxd/docs/default/llms.txt): Complete documentation index.