Networking
Articles in Networking.
Blog posts
How to Add a Second Network Interface to a Virtual Machine in Proxmox VE
Learn how to add a second NIC to a Proxmox VE virtual machine through the GUI, wire it to the right bridge, and get it actually working inside Linux and Windows guests.
How to Set Up OPNsense as a Virtual Firewall/Router in Proxmox VE
Turn your Proxmox VE host into your router by running OPNsense as a VM. This guide covers WAN/LAN bridge planning, correct VirtIO NIC setup, the checksum-offload bug that silently corrupts traffic, and how to keep a way in if the firewall VM ever fails to boot.
How to Access Proxmox VE Remotely and Securely (Without Exposing Port 8006)
Learn the safe way to reach your Proxmox VE web interface from outside your home network: SSH tunneling for quick access, a full Tailscale VPN setup, and locking down pveproxy so port 8006 never touches the open internet.
Bridge vs NAT in Proxmox VE: Which Networking Mode Should You Use?
Coming from VirtualBox or VMware Workstation, you probably expect a NAT dropdown for your VMs. Proxmox VE doesn't work that way by default — here's what bridged networking actually does, when you'd want NAT instead, and how to set up both.
How to Configure Network Bonding (LACP) in Proxmox VE for NIC Redundancy
A practical guide to Linux bonding in Proxmox VE: the seven bond modes explained, when you actually need switch-side LACP, and how to build, attach, and failover-test a bonded interface step by step.
How to Change the Hostname in Proxmox VE (The Right Way)
Proxmox does not officially support renaming a node after install. Here is the real, tested process for changing a hostname safely on standalone and clustered Proxmox VE nodes.
How to Configure a Static IP Address in Proxmox VE (Host and Guest VMs)
Learn how to set a static IP address on the Proxmox VE host and inside guest virtual machines, covering the web UI, /etc/network/interfaces, Netplan, and Cloud-Init, with fixes for common lockout mistakes.
Building Multi-Node VXLAN Overlays with Proxmox VE SDN
How to design and deploy VXLAN zones in Proxmox VE SDN to build layer 2 overlay networks that span racks and sites without depending on physical switch VLAN provisioning.
SR-IOV for Intel NICs on Proxmox VE: Passing Real NIC Performance Through to VMs
virtio-net hits a wall under sustained load because every packet gets copied through a host vhost thread. Here's how to pass Intel NIC virtual functions directly into Proxmox VE guests with SR-IOV for near bare-metal throughput and latency.
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