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My self-hosted home setup (programming.dev)
submitted 2 years ago by to c/selfhosted@lemmy.world
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Dedicated wifi for automation allows me to have devices such as Xiaomi Vaccuum, or security camera not phoning home. OpenWRT with good firewall rules completely isolate my "public" containers/VMs from my lan.

Server was built over time, disk by disk. I'm now aiming to buy only 12TB drives, but I got to sacrifice the first two as parity...

I just love the simplicity of snapraid / mergerfs. Even if I were to loose 3 disks (my setup allows me the loss of 2 disks), I'd only loose data that's on these disks, not the whole array. I lost one drive once, recovery went well and was relatively easy.

I try to keep things separated and I may be running a bit too many containers/vms, but well, I got resources to spare :)

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[–] [S] 7 points 2 years ago (2 children)

I'm not well versed in ARP spoofing attack and I'll dig around, but assuming the attacker gets access to a "public" VM, its only network adapter is linked to the openwrt router that has 3 separated zones (home lan, home automation, dmz). So I don't think he could have any impact on the lan? No lan traffic is ever going through the openwrt router.

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  • [–] 8 points 2 years ago (2 children)

    The risk is the ISP Wi-Fi. As long as you’re using WPA with a good long random passkey, the risk is minimal. However, anyone who had access to your Wi-Fi could initiate an ARP spoof (essentially be a man-in-the-middle)

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  • [–] [S] 14 points 2 years ago* (last edited 2 years ago) (1 child)

    Well, to be honest if someone has access to my Wi-Fi, I'd consider that I've already lost. As soon as you're on my lan, you have access to a ton of things. With this setup I'm not trying to protect against local attacks, but from breaches coming from the internet

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  • [–] 2 points 2 years ago (1 child)

    How would you change his setup to prevent ARP attacks? More network segmentation (clients and servers on separate VLANs) or does OPNsense additional protections I should look into?

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  • [–] 2 points 2 years ago (1 child)

    Don’t have the Wi-Fi network “upstream” of the LAN. You want the connection between the LAN and Wi-Fi to be through the WAN so you get NAT protection.

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  • [–] 1 point 2 years ago

    Any way you could update/create your own drawing with what you mean? (Bad paint drawings are acceptable!)

    I ask because I am curious if I am subject to the same problem. I'm not the most networking savvy so I need the extra help/explanation and maybe the drawing will help others.

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