Networking/Routing help

[droidus]

I am trying to route traffic from my dell server out to the internet. I have the server -> laptop (I guess acting like a router, for now - running Linux) -> WAP -> Linux Bastion host -> Internet. I tried to route traffic from the server to my laptop with this: ip route add default gw <ip_of_laptop>/32 vmbr0, but it tells me "either "to" is duplicate, or "gw" is a garbage". The only other rule I have in my routing table is this: <ip>/24 dev vmbr0 proto kernel scope link src <ip_of_proxmox>.
I am not a networking guy, so I would appreciate any further assistance on this so my hosts on Proxmox can get out.

 

[Stoiko Ivanov]

* you need to configure your laptop to actually forward packets (depending on the network-setup maybe also to NAT packets) - there are many howtos on the net how to do that
* is ip_of_laptop in the same network as <ip>/24 ? - if not configure one ip from <ip>/24 on your laptop (otherwise the PVE host does not know how to reach its gateway
finally the command should be:

ip route add default via <ip_of_laptop> dev vmbr0

(but you can just configure the proper values in /etc/network/interfaces - and reboot)

Apart from that - out of curiosity - any particular reason for this quite complicated setup? (why not directly plug you PVE-node to a switch and have a firewall filter the traffic before it goes in/out to the internet)

I hope this helps!

 

[droidus]

Apart from that - out of curiosity - any particular reason for this quite complicated setup? (why not directly plug you PVE-node to a switch and have a firewall filter the traffic before it goes in/out to the internet)

I hope this helps!

I would love a simpler solution - but my WAP is too far away to plug my server into. Any other ideas on how I can simplify this? I am not using a switch, as most devices are wireless on my network.

 

[Stoiko Ivanov]

hmm - if you cannot use a physical cable to your infrastructure you could consider the following (and read the according documentation):
* add a wifi-card to your pve-server and use a routed setup (most wifi-devices don't work as bridge-ports in station/client mode): https://pve.proxmox.com/pve-docs/chapter-sysadmin.html#_routed_configuration
* plug the PVE server into a wifi-access-point which you configure to forward the packets from the ethernet port via wifi