this post was submitted on 01 Nov 2024
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submitted 2 weeks ago* (last edited 2 weeks ago) by [email protected] to c/[email protected]
 

Hello,

Just spent a good week installing my home server. Time to pause and lookback to what I've setup and ask your help/suggestions as I am wondering if my below configuration is a good approach or just a useless convoluted approach.

I have a Proxmox instance with 3 VLAN:

  • Management (192.168.1.x) : the one used by proxmox host and that can access all other VLANs

  • Servarr (192.168.100.x) : every arr related software + Jellyfin (all LXC). All outbound connectivity goes via VPN. Cant access any VLAN

  • myCloud (192.168.200.X): WIP, but basically planning to have things like Nextcloud, Immich, Paperless etc...

The original idea was to allow external access via Cloudlfare tunnel but finally decided to switch back to Tailscale for "myCloud" access (as I am expected to share this with less than 5 accounts). So:

  • myCloud now has Tailscale running on it.
  • myCloud can now access Servarr VLAN

Consequently to my choice of using tailscale, I had now to use a DNS server to resolve mydomain.com:

  • Servarr now has pihole as DNS server reachable across all VLAN

On the top of all that I have yet another VLAN for my raspberry Pi running Vaultwarden reachable only via my personal tailscale account.

I'm open to restart things from scratch (it's fun), so let me know.

Also wondering if using LXCs is better than docker especially when it comes to updates and longer term maintenance.

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[–] [email protected] -1 points 2 weeks ago* (last edited 2 weeks ago) (30 children)

I don't think there is anything wildly wrong with it, but it seems like you're doing all of this at the router, unless you have dedicated switches for each VLAN?

VLAN is not a security feature, it's a logical separation of IP segments. Maybe I'm missing your intention here, but just setting different IP spaces on VLANs and then bridging them doesn't help your security, it just complicates your network.

[–] [email protected] 5 points 2 weeks ago (29 children)

Not OP, but logical separation and firewall rules is a needed first step for security. They already mentioned in the post that one vlan has dedicated outbound (via VPN only) and doesn't have access to their .200.

Physical switches per vlan is completely unnecessary, and entirely why vlans are used rather than subnets.

[–] [email protected] -2 points 2 weeks ago (6 children)

You can't use the same subnet on different vlans if you ever intend for both of them to reach the internet. In that case you'd need a second router which just defeats the purpose

[–] [email protected] 1 points 2 weeks ago (1 children)

They are all defined as 192.168.x.y/24 Doesn't this make them in different subnets?

[–] [email protected] 3 points 2 weeks ago

Yes.

And to be clear about things, because that comment doesn't make any sense for VLANs - a VLAN can contain multiple subnets. You will not have a single subnet across multiple VLANs.

Your config is fine in that regard.

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