Tag: proxmox

Second Public IP for Cloud Router in Proxmox

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Time to expand my old Proxmox configuration, which served me well for the past two years, with a new public IP, a cloud router, and a separate private subnet.. The goal:

  • Keep old existing IP, subnet, DHCP, etc
  • Keep controlling proxmox from old IP
  • Add a new Public IP, new private subnet
  • Install some easy to manage cloud router, iptables is so painful.

Oneprovider delivers failover IPs – ARP based, which means that static IP with exact MAC address will be used. Only 1 NIC. Every router needs at least 1 WAN & 1 LAN. WAN will connect directly to Public vmbr0 bridge. New vmbr3 will be created and used for LAN. Public failover IP: 123.123.123.123

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Private Network with NAT for VMs on Proxmox with Single Public IPv4

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I have a dedicated server with only 1 Public IPv4, without a router in front to manage the network. So I should use the power of iptables and proxmox to create a private network for the VMs. Virtual machines will communicate with the world through NAT. Long story short:
Internet <-> vmbr0 (default bridge with static IP) <-> vmbr2(second bridge, that I will create) <-> Virtual Machines

Proxmox Firewall, which is just iptables, will take care of network security.
Port forwarding? no worries, iptables will take care too.

network diagram
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