505 lines
14 KiB
Nix
505 lines
14 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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# TODO: ULAs for most things
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# TODO: proper aliases
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# TODO: refactor the crap out of everything
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if_wan = "wan";
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if_lan = "lan";
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if_lan10 = "lan.10";
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if_lan20 = "lan.20";
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lan_p4 = "10.19.1"; # .0/24
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lan10_p4 = "10.19.10"; # .0/24
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lan20_p4 = "10.19.20"; # .0/24
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pd_from_wan = ""; # ::/60
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lan_p6 = "${pd_from_wan}9"; # ::/64
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lan10_p6 = "${pd_from_wan}a"; # ::/64
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lan20_p6 = "${pd_from_wan}2"; # ::/64
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ula_p = "fdab:07d3:581d"; # ::/48
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ula_p_lan = "${ula_p}:0000"; # ::/56
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ula_p_lan10 = "${ula_p}:1000"; # ::/56
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ula_p_lan20 = "${ula_p}:2000"; # ::/56
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in
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{
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imports =
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[ # Include the results of the hardware scan.
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./hardware-configuration.nix
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];
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# Bootloader.
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boot.loader.systemd-boot.enable = true;
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boot.loader.efi.canTouchEfiVariables = false;
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boot.kernelParams = [
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"sysrq_always_enabled=1"
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];
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boot.loader.systemd-boot.configurationLimit = 5;
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boot.kernelPackages = pkgs.linuxKernel.packages.linux_6_12;
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boot.growPartition = true;
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environment.etc.hosts.mode = "0644";
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networking.hostName = "grouter";
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# It is impossible to do multiple prefix requests with networkd,
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# so I use dhcpcd for this
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# https://github.com/systemd/systemd/issues/22571
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networking.dhcpcd.enable = true;
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# https://github.com/systemd/systemd/issues/22571#issuecomment-2094905496
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# https://gist.github.com/csamsel/0f8cca3b2e64d7e4cc47819ec5ba9396
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networking.dhcpcd.extraConfig = ''
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duid
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ipv6only
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nodhcp6
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noipv6rs
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nohook resolv.conf, yp, hostname, ntp
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option rapid_commit
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interface ${if_wan}
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ipv6rs
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dhcp6
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# this doesn't play well with networkd
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# ia_na
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# ia_pd 1 ${if_lan}/0
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# ia_pd 2 ${if_lan10}/0
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# ia_pd 3 ${if_lan20}/0
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# request the leases just for routing (so that the att box knows we're here)
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# actual ip assignments are static, based on $pd_from_wan
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ia_pd 1 -
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ia_pd 2 -
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# ia_pd 3 -
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# ia_pd 4 -
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# ia_pd 5 -
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# ia_pd 6 -
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# ia_pd 7 -
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# ia_pd 8 -
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'';
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networking.useNetworkd = true;
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systemd.network.enable = true;
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systemd.network = {
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# Global options
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config.networkConfig = {
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IPv4Forwarding = true;
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IPv6Forwarding = true;
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};
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# This is applied by udev, not networkd
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# https://nixos.wiki/wiki/Systemd-networkd
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# https://nixos.org/manual/nixos/stable/#sec-rename-ifs
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links = {
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"10-wan" = {
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matchConfig.PermanentMACAddress = "bc:24:11:4f:c9:c4";
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linkConfig.Name = if_wan;
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};
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"10-lan" = {
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matchConfig.PermanentMACAddress = "bc:24:11:83:d8:de";
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linkConfig.Name = if_lan;
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};
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};
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netdevs = {
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"10-vlan10" = {
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netdevConfig = {
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Kind = "vlan";
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Name = if_lan10;
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};
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vlanConfig.Id = 10;
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};
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"10-vlan20" = {
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netdevConfig = {
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Kind = "vlan";
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Name = if_lan20;
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};
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vlanConfig.Id = 20;
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};
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};
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networks = {
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"10-wan" = {
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matchConfig.Name = if_wan;
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networkConfig = {
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# start a DHCP Client for IPv4 Addressing/Routing
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DHCP = "ipv4";
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# accept Router Advertisements for Stateless IPv6 Autoconfiguraton (SLAAC)
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# let dhcpcd handle this
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IPv6AcceptRA = false;
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};
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# make routing on this interface a dependency for network-online.target
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linkConfig.RequiredForOnline = "routable";
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};
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"20-lan" = {
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matchConfig.Name = "lan";
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vlan = [
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if_lan10
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if_lan20
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];
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networkConfig = {
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IPv4Forwarding = true;
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IPv6SendRA = true;
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Address = [ "${lan_p4}.1/24" ];
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};
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ipv6Prefixes = [
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{
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# AddressAutoconfiguration = false;
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Prefix = "${lan_p6}::/64";
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Assign = true;
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Token = [ "static:::1" "eui64" ];
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}
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{
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Prefix = "${ula_p_lan}::/64";
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Assign = true;
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Token = [ "static:::1" "eui64" ];
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}
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];
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ipv6SendRAConfig = {
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Managed = true;
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OtherInformation = true;
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EmitDNS = true;
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DNS = [ "${lan_p6}::1" ];
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};
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};
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"30-vlan10" = {
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matchConfig.Name = if_lan10;
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networkConfig = {
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IPv6SendRA = true;
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Address = [ "${lan10_p4}.1/24" ];
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};
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ipv6Prefixes = [
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{
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Prefix = "${lan10_p6}::/64";
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Assign = true;
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Token = [ "static:::1" "eui64" ];
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}
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{
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Prefix = "${ula_p_lan10}::/64";
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Assign = true;
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Token = [ "static:::1" "eui64" ];
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}
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];
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};
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"30-vlan20" = {
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matchConfig.Name = if_lan20;
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networkConfig = {
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IPv6SendRA = true;
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Address = [ "${lan20_p4}.1/24" ];
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};
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ipv6Prefixes = [
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{
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Prefix = "${lan20_p6}::/64";
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Assign = true;
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Token = [ "static:::1" "eui64" ];
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}
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{
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Prefix = "${ula_p_lan20}::/64";
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Assign = true;
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Token = [ "static:::1" "eui64" ];
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}
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];
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};
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};
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};
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networking.firewall.enable = false;
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networking.nftables.enable = true;
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networking.nftables.tables.firewall = {
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family = "inet";
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content = ''
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define WAN_IF = "${if_wan}"
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define LAN_IF = "${if_lan}"
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define LAN_IPV4_SUBNET = ${lan_p4}.0/24
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define LAN_IPV6_SUBNET = ${lan_p6}::/64
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define LAN_IPV4_HOST = ${lan_p4}.100
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define LAN_IPV6_HOST = ${lan_p6}::1:1000
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define ALLOWED_TCP_PORTS = { ssh, 19999 }
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define ALLOWED_UDP_PORTS = { 53 }
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chain input {
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type filter hook input priority filter; policy drop;
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# type filter hook input priority filter; policy accept;
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# Allow established and related connections
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ct state established,related accept
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# Allow all traffic from loopback interface
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iifname lo accept
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# Allow ICMPv6 on link local addrs
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ip6 nexthdr icmpv6 ip6 saddr fe80::/10 accept
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ip6 nexthdr icmpv6 ip6 daddr fe80::/10 accept # TODO: not sure if necessary
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# Allow all ICMPv6 from LAN
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iifname $LAN_IF ip6 saddr $LAN_IPV6_SUBNET ip6 nexthdr icmpv6 accept
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# Allow DHCPv6 client traffic
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ip6 daddr { fe80::/10, ff02::/16 } udp dport dhcpv6-server accept
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# Allow all ICMP from LAN
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iifname $LAN_IF ip saddr $LAN_IPV4_SUBNET ip protocol icmp accept
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# Allow specific services from LAN
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iifname $LAN_IF ip saddr $LAN_IPV4_SUBNET tcp dport $ALLOWED_TCP_PORTS accept
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iifname $LAN_IF ip6 saddr $LAN_IPV6_SUBNET tcp dport $ALLOWED_TCP_PORTS accept
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iifname $LAN_IF ip saddr $LAN_IPV4_SUBNET udp dport $ALLOWED_UDP_PORTS accept
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iifname $LAN_IF ip6 saddr $LAN_IPV6_SUBNET udp dport $ALLOWED_UDP_PORTS accept
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# Allow SSH from WAN (if needed)
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iifname $WAN_IF tcp dport ssh accept
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}
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chain forward {
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type filter hook forward priority filter; policy drop;
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# type filter hook forward priority filter; policy accept;
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# Allow established and related connections
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ct state established,related accept
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# Port forwarding
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iifname $WAN_IF tcp dport https ip daddr $LAN_IPV4_HOST accept
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# Allowed IPv6 ports
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iifname $WAN_IF tcp dport https ip6 daddr $LAN_IPV6_HOST accept
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# Allow traffic from LAN to WAN
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iifname $LAN_IF ip saddr $LAN_IPV4_SUBNET oifname $WAN_IF accept
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iifname $LAN_IF ip6 saddr $LAN_IPV6_SUBNET oifname $WAN_IF accept
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}
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chain output {
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# Accept anything out of self by default
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type filter hook output priority filter; policy accept;
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}
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chain prerouting {
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# Initial step, accept by default
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type nat hook prerouting priority dstnat; policy accept;
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# Port forwarding
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iifname $WAN_IF tcp dport https dnat ip to $LAN_IPV4_HOST
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}
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chain postrouting {
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# Last step, accept by default
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type nat hook postrouting priority srcnat; policy accept;
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# Masquerade LAN addrs
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# theoretically shouldn't need to check the input interface here,
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# as it would be filtered by the forwarding rules
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oifname $WAN_IF ip saddr $LAN_IPV4_SUBNET masquerade
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# Optional IPv6 masquerading (big L if enabled)
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# oifname $WAN_IF ip6 saddr $LAN_IPV6_SUBNET masquerade
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}
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'';
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};
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services.kea.dhcp4.enable = true;
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services.kea.dhcp4.settings = {
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interfaces-config = {
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interfaces = [
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if_lan
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];
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};
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lease-database = {
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type = "memfile";
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persist = true;
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};
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subnet4 = [
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{
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id = 1;
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subnet = "${lan_p4}.0/24";
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pools = [ { pool = "${lan_p4}.100 - ${lan_p4}.199"; } ];
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option-data = [
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{
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name = "routers";
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data = "${lan_p4}.1";
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}
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{
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name = "domain-name-servers";
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data = "${lan_p4}.1";
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}
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];
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}
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];
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};
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services.kea.dhcp6.enable = true;
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services.kea.dhcp6.settings = {
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interfaces-config = {
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interfaces = [
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if_lan
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];
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};
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lease-database = {
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type = "memfile";
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persist = true;
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};
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subnet6 = [
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{
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id = 1;
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interface = if_lan;
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subnet = "${lan_p6}::/64";
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rapid-commit = true;
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pools = [ { pool = "${lan_p6}::1:1000/116"; } ];
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option-data = [
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{
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name = "dns-servers";
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data = "${lan_p6}::1";
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}
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];
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}
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];
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};
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services.resolved.enable = false;
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networking.resolvconf.enable = true;
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networking.resolvconf.useLocalResolver = true;
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services.coredns.enable = true;
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services.coredns.config = ''
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. {
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cache {
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prefetch 100
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}
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hosts /etc/coredns.hosts {
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fallthrough
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}
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# Quad9
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# forward . tls://[2620:fe::fe]:53 tls://9.9.9.9 tls://[2620:fe::9]:53 tls://149.112.112.112 {
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# tls_servername dns.quad9.net
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# Cloudflare (seems to be faster)
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forward . tls://[2606:4700:4700::1112]:53 tls://1.1.1.2 tls://[2606:4700:4700::1002]:53 tls://1.0.0.2 {
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tls_servername security.cloudflare-dns.com
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health_check 5s
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}
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}
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'';
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environment.etc."coredns.hosts".text = ''
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::1 wow.cazzzer.com hi.cazzzer.com
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'';
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services.knot.enable = true;
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services.knot.settings = {
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server = {
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# listen = "0.0.0.0@1053";
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listen = "::@1053";
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};
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# TODO: templates
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zone = [
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{
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domain = "l.cazzzer.com";
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storage = "/var/lib/knot/zones";
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file = "l.cazzzer.com.zone";
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}
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];
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};
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# Ensure the zone file exists
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system.activationScripts.knotZoneFile = ''
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ZONE_DIR="/var/lib/knot/zones"
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ZONE_FILE="$ZONE_DIR/l.cazzzer.com.zone"
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# Create the directory if it doesn't exist
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mkdir -p "$ZONE_DIR"
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# Check if the zone file exists
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if [ ! -f "$ZONE_FILE" ]; then
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# Create the zone file with a basic SOA record
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# Serial; Refresh; Retry; Expire; Negative Cache TTL;
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cat > "$ZONE_FILE" <<EOF
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\$ORIGIN l.cazzzer.com.
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@ 3600 SOA ns admin 1 86400 900 691200 3600
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EOF
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echo "Created new zone file: $ZONE_FILE"
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else
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echo "Zone file already exists: $ZONE_FILE"
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fi
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# Ensure proper ownership and permissions
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chown -R knot:knot "/var/lib/knot"
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chmod 644 "$ZONE_FILE"
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'';
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services.netdata.enable = true;
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# Enable the X11 windowing system.
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# You can disable this if you're only using the Wayland session.
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services.xserver.enable = false;
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# Enable the KDE Plasma Desktop Environment.
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# Useful for debugging with wireshark.
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services.displayManager.sddm.enable = false;
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services.displayManager.sddm.wayland.enable = true;
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services.desktopManager.plasma6.enable = true;
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# No need for audio in VM
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services.pipewire.enable = false;
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# VM services
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services.qemuGuest.enable = true;
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services.spice-vdagentd.enable = true;
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services.openssh.enable = true;
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services.openssh.settings.PasswordAuthentication = false;
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services.openssh.settings.KbdInteractiveAuthentication = false;
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security.sudo.wheelNeedsPassword = false;
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users.groups = {
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cazzzer = {
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gid = 1000;
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};
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};
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users.users.cazzzer = {
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password = "";
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openssh.authorizedKeys.keys = [
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"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPWgEzbEjbbu96MVQzkiuCrw+UGYAXN4sRe2zM6FVopq cazzzer@Yura-PC"
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"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIApFeLVi3BOquL0Rt+gQK2CutNHaBDQ0m4PcGWf9Bc43 cazzzer@Yura-TPX13"
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];
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isNormalUser = true;
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description = "Yura";
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uid = 1000;
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group = "cazzzer";
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extraGroups = [ "wheel" "docker" "wireshark" ];
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};
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programs.firefox.enable = true;
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programs.fish.enable = true;
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programs.git.enable = true;
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programs.neovim.enable = true;
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programs.bat.enable = true;
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programs.htop.enable = true;
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programs.wireshark.enable = true;
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programs.wireshark.package = pkgs.wireshark; # wireshark-cli by default
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environment.systemPackages = with pkgs; [
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dust
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eza
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fastfetch
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fd
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kdePackages.filelight
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kdePackages.kate
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kdePackages.yakuake
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ldns
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lsof
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micro
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mpv
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ripgrep
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rustscan
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starship
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tealdeer
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waypipe
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whois
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];
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# This value determines the NixOS release from which the default
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# settings for stateful data, like file locations and database versions
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# on your system were taken. It‘s perfectly fine and recommended to leave
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# this value at the release version of the first install of this system.
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# Before changing this value read the documentation for this option
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# (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
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system.stateVersion = "24.11"; # Did you read the comment?
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}
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