Proxmox networking configuration


Active Member
Mar 25, 2014
Hi, I've a physical server with a network interface that have 2 public ip. I configure the networking as follow:

iface enp2s0 inet manual

auto vmbr0
iface vmbr0 inet static
address X.X.X.Y (public ip for the Proxmox GUI)
netmask X.X.X.X
gateway X.X.X.X
bridge-ports enp2s0
bridge-stp off
bridge-fd 0

up route add -net X.X.X.X netmask X.X.X.X gw X.X.X.X vmbr0
up ip route add via X.X.X.Y dev vmbr0
up ip route add via X.X.X.Y dev vmbr0
up ip route add via X.X.X.Y dev vmbr0
up sysctl -w net.ipv4.ip_forward=1
up sysctl -w net.ipv4.conf.enp2s0.send_redirects=0

auto vmbr1
iface vmbr1 inet manual
bridge-ports none
bridge-stp off
bridge-fd 0

I installed NGINX to the Proxmox server as a reverse proxy for access the Proxmox GUI to the 443 port and everything work without issue. Now I would forward the NGINX logs with syslog to the SIEM that I installed to the vmbr1 but I can't reach the SIEM vm from the Proxmox server. How a can solve this networking issue?

Thank you
good morning, I would configure NGINX for sending logs with syslog, but I can't reach the vm to the vmbr1 from the Proxmox server.

You can find attached the network diagram


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