I think the router config is ready
Nothing to do but install it and see what breaks
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97b5ae6a5e
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5B2020A0F9921EF4
1 changed files with 152 additions and 70 deletions
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@ -4,9 +4,11 @@
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lib,
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# outputs,
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# config,
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pkgs,
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# pkgs,
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...
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}: let
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# NOTE: I could turn this into a cool NixOS module?
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# TODO: review https://francis.begyn.be/blog/nixos-home-router
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ip = "192.168.0.1";
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cidr = "${ip}/16";
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netmask = "255.255.0.0";
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@ -22,10 +24,16 @@
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host = "dragon";
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ip = "192.168.0.10";
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};
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beefcake = {
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identifier = "beefcake";
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host = "beefcake";
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ip = "192.168.0.9";
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};
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};
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in {
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networking.hostName = "router";
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networking.domain = "h.lyte.dev";
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networking.useDHCP = false;
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imports = [
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inputs.disko.nixosModules.disko
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@ -41,9 +49,15 @@ in {
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};
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kernel = {
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sysctl = {
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"net.ipv4.ip_forward" = 1;
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"net.ipv6.conf.all.forwarding" = 1;
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"net.ipv4.conf.all.forwarding" = true;
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"net.ipv6.conf.all.forwarding" = true;
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"net.ipv6.conf.all.accept_ra" = 0;
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"net.ipv6.conf.all.autoconf" = 0;
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"net.ipv6.conf.all.use_tempaddr" = 0;
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"net.ipv6.conf.wan0.accept_ra" = 2;
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# "net.ipv6.conf.wan0.autoconf" = 1;
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};
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};
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};
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@ -110,61 +124,59 @@ in {
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services.dnsmasq = {
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enable = true;
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# TODO: port to settings
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extraConfig = ''
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settings = {
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# server endpoints
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listen-address=::1,127.0.0.1,${ip}
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port=53
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listen-address = "::1,127.0.0.1,${ip}";
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port = "53";
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# DNS cache entries
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cache-size=10000
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cache-size = "10000";
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# local domain entries
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local=/lan/
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domain=lan
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expand-hosts
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local = "/lan/";
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domain = "lan";
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expand-hosts = true;
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dhcp-authoritative
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dhcp-authoritative = true;
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conf-file=/usr/share/dnsmasq/trust-anchors.conf
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dnssec
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conf-file = "/usr/share/dnsmasq/trust-anchors.conf";
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dnssec = true;
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except-interface=${wan_if}
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interface=${lan_if}
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except-interface = "${wan_if}";
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interface = "${lan_if}";
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enable-ra
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enable-ra = true;
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# dhcp-option=121,${cidr},${ip}
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# dhcp-option = "121,${cidr},${ip}";
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dhcp-range=lan,${lease.min},${lease.max},${netmask},10m
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dhcp-range=tag:${lan_if},::1,constructor:${lan_if},ra-names,12h
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dhcp-range = [
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"lan,${lease.min},${lease.max},${netmask},10m"
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"tag:${lan_if},::1,constructor:${lan_if},ra-names,12h"
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];
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dhcp-host=${hosts.dragon.identifier},${hosts.dragon.ip},12h
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dhcp-host = [
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"${hosts.dragon.host},${hosts.dragon.ip},12h"
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"${hosts.beefcake.host},${hosts.beefcake.ip},12h"
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];
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# TODO: parameterize the rest?
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# may need to go in /etc/hosts (networking.extraHosts), too?
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address = [
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"/video.lyte.dev/192.168.0.9"
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"/git.lyte.dev/192.168.0.9"
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"/bw.lyte.dev/192.168.0.9"
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"/files.lyte.dev/192.168.0.9"
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"/vpn.h.lyte.dev/192.168.0.9"
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"/.h.lyte.dev/192.168.0.9"
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];
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dhcp-host=beefcake,192.168.0.9,12h
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dhcp-host=chromebox,192.168.0.5,12h
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dhcp-host=B-C02G56VXML85,192.168.0.128,12h
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dhcp-host=B-W4KNHWJ6XY,192.168.0.217,12h
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dhcp-host=mnemonic,192.168.0.248,ea:1b:7a:fb:8b:b8,12h
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# dhcp-host=frontdoorcam,192.168.0.89,9c:8e:cd:2b:71:e9,120m
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dhcp-host=AMC058BA_A75F1E,192.168.0.150,12h
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dhcp-host=AMC0587F_A2969A,192.168.0.151,12h
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address=/video.lyte.dev/192.168.0.9
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address=/git.lyte.dev/192.168.0.9
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address=/bw.lyte.dev/192.168.0.9
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address=/files.lyte.dev/192.168.0.9
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address=/vpn.h.lyte.dev/192.168.0.9
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address=/.h.lyte.dev/192.168.0.9
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server=${ip}
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server=8.8.8.8
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server=8.8.4.4
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server=1.1.1.1
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server=1.0.0.1
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'';
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server = [
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"${ip}"
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"8.8.8.8"
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"8.8.4.4"
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"1.1.1.1"
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"1.0.0.1"
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];
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};
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};
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networking.extraHosts = ''
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@ -175,42 +187,104 @@ in {
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ff02::1 ip6-allnodes
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ff02::2 ip6-allrouters
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192.168.0.9 git.lyte.dev
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192.168.0.9 video.lyte.dev
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192.168.0.9 files.lyte.dev
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192.168.0.9 bw.lyte.dev
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192.168.0.9 vpn.h.lyte.dev
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'';
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networking.nat.enable = true;
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networking.firewall.enable = false;
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networking.nftables = {
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enable = true;
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flushRuleset = true;
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};
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networking.firewall = {
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# TODO: allow users to ssh to git.lyte.dev
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# TODO: allow remote backuppers to ssh to beefcake
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# TODO: allow DNS internally
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# TODO: allow 67 for DHCP
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# TODO: allow 2201 for router ssh access?
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# TODO: allow 25565 to bald for minecraft
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# TODO: allow all icmp stuff and dhcp stuff (including dhcpv6-client)
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tables = {
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filter = {
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family = "inet";
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content = ''
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chain input {
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# type filter hook input priority filter; policy accept;
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type filter hook input priority 0;
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# filterForward = true;
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# anything from loopback interface
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iifname "lo" accept
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extraInputRules = ''
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'';
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extraForwardRules = ''
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'';
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# accept traffic we originated
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ct state { established, related } counter accept
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ct state invalid counter drop
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enable = true;
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# ICMP
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ip6 nexthdr icmpv6 icmpv6 type { echo-request, nd-neighbor-solicit, nd-neighbor-advert, nd-router-solicit, nd-router-advert, mld-listener-query, destination-unreachable, packet-too-big, time-exceeded, parameter-problem } counter accept
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ip protocol icmp icmp type { echo-request, destination-unreachable, router-advertisement, time-exceeded, parameter-problem } counter accept
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ip protocol icmpv6 counter accept
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ip protocol icmp counter accept
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meta l4proto ipv6-icmp counter accept
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package = pkgs.nftables;
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allowPing = true;
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allowedTCPPorts = [22];
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allowedUDPPorts = [];
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# allowedTCPPortRanges = [{from = 1; to = 10;}];
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# allowedUDPPortRanges = [{from = 1; to = 10;}];
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udp dport dhcpv6-client counter accept
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tcp dport { 64022, 22, 53, 67, 25565 } counter accept
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udp dport { 64020, 22, 53, 67 } counter accept
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# iifname "iot" ip saddr $iot-ip tcp dport { llmnr } counter accept
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# iifname "iot" ip saddr $iot-ip udp dport { mdns, llmnr } counter accept
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iifname "${lan_if}" tcp dport { llmnr } counter accept
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iifname "${lan_if}" udp dport { mdns, llmnr } counter accept
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counter drop
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}
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# allow all outgoing
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chain output {
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type filter hook output priority 0;
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accept
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}
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chain forward {
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type filter hook forward priority 0;
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accept
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}
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'';
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};
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nat = {
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family = "ip";
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content = ''
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set masq_saddr {
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type ipv4_addr
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flags interval
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elements = { ${cidr} }
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}
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map map_port_ipport {
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type inet_proto . inet_service : ipv4_addr . inet_service
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}
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chain prerouting {
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iifname ${lan_if} accept
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type nat hook prerouting priority dstnat + 1; policy accept;
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fib daddr type local dnat ip addr . port to meta l4proto . th dport map @map_port_ipport
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iifname ${wan_if} tcp dport { 22, 80, 443, 25565, 64022 } dnat to ${hosts.beefcake.ip}
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iifname ${wan_if} udp dport { 64020 } dnat to ${hosts.beefcake.ip}
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# iifname ${wan_if} tcp dport { 25565 } dnat to 192.168.0.244
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# iifname ${wan_if} udp dport { 25565 } dnat to 192.168.0.244
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# router
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iifname ${wan_if} tcp dport { 2201 } dnat to ${ip}
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}
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chain output {
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type nat hook output priority -99; policy accept;
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ip daddr != 127.0.0.0/8 oif "lo" dnat ip addr . port to meta l4proto . th dport map @map_port_ipport
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}
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chain postrouting {
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type nat hook postrouting priority srcnat + 1; policy accept;
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oifname ${lan_if} masquerade
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ip saddr @masq_saddr masquerade
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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.dhcpcd = {
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@ -276,5 +350,13 @@ in {
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};
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};
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services.avahi = {
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enable = true;
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reflector = true;
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interfaces = [
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lan_if
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];
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};
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system.stateVersion = "23.11";
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}
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