{ config, ... }: { networking = { hostName = "homelab"; firewall = { allowedTCPPorts = [ 22 80 443 2222 6969 ]; allowedUDPPorts = [ 3478 7359 ]; }; }; boot.kernel.sysctl = { "net.ipv4.ip_unprivileged_port_start" = 80; }; }