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|
{
config,
lib,
pkgs,
...
}:
let
cfg = config.os.core.network;
in
{
options.os.core.network = {
enable = lib.mkEnableOption "system-wide networking setup";
enableFirewall = lib.mkEnableOption "integrated zero-trust nftables firewall layers";
isVM = lib.mkOption {
type = lib.types.bool;
default = false;
description = "Set to true if this configuration is running inside a guest VM. Set to false for the bare-metal host.";
};
ips = lib.mkOption {
type = lib.types.attrsOf lib.types.str;
default = rec {
router = opnsense-vm;
host = "10.0.0.2";
opnsense-vm = "10.0.0.1";
gateway-vm = "10.0.0.3";
databse-vm = "10.0.0.4";
monitor-vm = "10.0.0.5";
media-vm = "10.0.0.6";
sandbox-vm = "10.0.0.7";
storage-vm = "10.0.0.8";
web-vm = "10.0.0.9";
mail-vm = "10.0.0.10";
relay-vm = "10.0.0.11";
gameserver-vm = "10.0.0.12";
};
description = "Central registry of static IP allocations for the cluster.";
};
profile = lib.mkOption {
type = lib.types.enum [
"client"
"server"
];
default = "client";
description = "Which networking profile configuration to apply";
};
lan = lib.mkOption {
description = "Physical Home Local Area Network configuration parameters.";
type = lib.types.submodule {
options = {
ip = lib.mkOption {
type = lib.types.str;
default = "10.0.0.2";
description = "The local static or leased IP assigned to this machine on the home network.";
};
range = lib.mkOption {
type = lib.types.str;
default = "10.0.0.0/24";
description = "The broader subnet block representing the physical home network.";
};
};
};
};
wg = lib.mkOption {
description = "Standard WireGuard VPN tunnel configuration parameters.";
type = lib.types.submodule {
options = {
ip = lib.mkOption {
type = lib.types.str;
default = "10.3.0.1";
description = "The explicit tunnel IP address assigned to this machine's WireGuard interface.";
};
range = lib.mkOption {
type = lib.types.str;
default = "10.3.0.0/24";
description = "The total addressable IP space assigned to the WireGuard network pool.";
};
};
};
};
hs = lib.mkOption {
description = "Headscale mesh overlay network configuration parameters.";
type = lib.types.submodule {
options = {
ip = lib.mkOption {
type = lib.types.str;
default = "10.4.0.1";
description = "The explicit mesh network IP address assigned to this machine via Headscale.";
};
range = lib.mkOption {
type = lib.types.str;
default = "10.4.0.0/24";
description = "The full mesh overlay allocation subnet block.";
};
};
};
};
};
config = lib.mkIf cfg.enable (
lib.mkMerge [
{
services.resolved.enable = true;
}
(lib.mkIf (cfg.profile == "client") {
networking.networkmanager = {
enable = true;
dns = "systemd-resolved";
wifi.macAddress = "random";
wifi.backend = "iwd";
ethernet.macAddress = "random";
};
systemd.services."NetworkManager-wait-online".enable = false;
environment.systemPackages = [
pkgs.impala
];
})
(lib.mkIf (cfg.profile == "client" && cfg.enableFirewall) {
networking = {
firewall.enable = true;
nftables.enable = true;
};
})
(lib.mkIf (cfg.profile == "server") {
networking = {
useNetworkd = true;
useDHCP = false;
};
systemd.network = {
enable = true;
wait-online.enable = lib.mkIf (!cfg.isVM) false;
netdevs = lib.mkIf (!cfg.isVM) {
"10-br-srv" = {
netdevConfig = {
Name = "br-srv";
Kind = "bridge";
};
};
};
networks."20-host-management" = {
matchConfig.Name = if cfg.isVM then "eth0" else "br-srv";
address = [ "${cfg.lan.ip}/24" ];
gateway = [ cfg.ips.router ];
networkConfig.LinkLocalAddressing = "no";
};
};
boot.kernel.sysctl = {
"net.ipv4.ip_nonlocal_bind" = 1;
"net.ipv4.ip_forward" = 1;
};
})
(lib.mkIf
(
cfg.profile == "server"
&& cfg.enableFirewall
&& cfg.isVM
&& config.networking.hostName != "vm2-gateway"
)
{
networking.nftables.enable = true;
networking.firewall = {
enable = true;
extraCommands = ''
nft add table ip nat 2>/dev/null || true
nft flush table ip nat
nft add chain ip nat PREROUTING { type nat hook prerouting priority dstnat \; }
nft add rule ip nat PREROUTING ip saddr ${cfg.ips.vm2-gateway} ip daddr ${cfg.lan.ip} redirect
'';
};
}
)
]
);
}
|
