Learn how to configure and manage the built-in firewall in Proxmox VE in this comprehensive 49-minute tutorial. Explore essential topics including enabling the firewall, creating rules for management access, configuring hypervisor and virtual machine-specific settings, and utilizing features like Aliases, IP Sets, and Security Groups. Discover best practices for rule creation, troubleshooting techniques, and methods to prevent accidental lockouts. Master the art of securing your Proxmox environment by controlling traffic between VMs and implementing multi-layered security measures without additional software.