Learn how to configure VLANs in Proxmox for a single Network Interface Card (NIC) in this comprehensive 29-minute video tutorial. Discover the step-by-step process of reconfiguring the management interface to support VLAN tagging, modifying network switch settings, adding VLAN interfaces to Proxmox, and configuring virtual machines for VLAN support. Gain practical insights into network configuration, including editing the /etc/network/interfaces file, setting up trunk ports on switches, and assigning VLANs to both existing and new virtual machines. Master the techniques for implementing a robust VLAN infrastructure in Proxmox environments with a single NIC, enhancing network segmentation and security.