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Cake day: June 19th, 2023

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  • WireGuard routes certain traffic from the client (your iPhone) through the server (the computer at your house). If you route all traffic, then when your iPhone accesses the internet, it’s as if you were at home. Since that WireGuard server is sitting on your home LAN, it is able to route your phones traffic to anything else on that LAN, or out to the internet.

    Wireguard clients have a setting called AllowedIPs that tells the client what IP subnets to route through the server. By default this is 0.0.0.0/0, ::/0, which means “all ipv4 and all ipv6 traffic”. But If all you want to access are services on your home LAN, then you change that to 192.168.0.0/24 or whatever your home subnet is, and only traffic heading to that network will be routed through the WireGuard server at your house, but all other traffic goes out of your phone’s normal network paths to the internet.