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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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transmatrix@lemmy.world ⁨1⁩ ⁨year⁩ ago
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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- tiller@programming.dev ⁨1⁩ ⁨year⁩ ago
  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 beaches coming from the internet
  
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  - transmatrix@lemmy.world ⁨1⁩ ⁨year⁩ ago
    Doesn’t need to be the case if you segment your network to protect against ARP.
    
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- foggenbooty@lemmy.world ⁨1⁩ ⁨year⁩ ago
  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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  - transmatrix@lemmy.world ⁨1⁩ ⁨year⁩ ago
    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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    Ac5000@lemm.ee ⁨1⁩ ⁨year⁩ 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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