asonix
c09d259702
vrrp was very close, i got prefixes, but i couldn't use them I'll look into ipv6 nat tomorrow
376 lines
9.7 KiB
Nix
376 lines
9.7 KiB
Nix
{ hostName }:
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{ pkgs, ... }:
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let
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wan = "end0";
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lan = "enp1s0";
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bridge = "br-lan";
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devices = "devices-vlan";
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wifi = "wifi-vlan";
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in
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{
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boot.kernel = {
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sysctl = {
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"net.ipv6.conf.all.forwarding" = 1;
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"net.ipv6.conf.${bridge}.accept_ra" = 2;
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"net.ipv6.conf.${devices}.accept_ra" = 2;
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"net.ipv6.conf.${wifi}.accept_ra" = 2;
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"net.ipv4.conf.all.forwarding" = true;
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"net.ipv4.conf.default.rp_filter" = 1;
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"net.ipv4.conf.${wan}.rp_filter" = 1;
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"net.ipv4.conf.${bridge}.rp_filter" = 0;
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"net.ipv4.conf.${devices}.rp_filter" = 0;
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"net.ipv4.conf.${wifi}.rp_filter" = 0;
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};
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};
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environment.systemPackages = with pkgs; [
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arp-scan
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];
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systemd.network = {
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wait-online.anyInterface = true;
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netdevs = {
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# Attempted hack for more ipv6 prefixes
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# I got the prefixes but networkd wasn't smart enough to use them
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# "00-vrrp-1" = {
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# netdevConfig = {
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# Name = "vrrp-1";
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# Kind = "macvlan";
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# MACAddress = "00:00:5e:00:01:05";
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# };
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# macvlanConfig.Mode = "bridge";
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# };
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# "00-vrrp-2" = {
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# netdevConfig = {
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# Name = "vrrp-2";
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# Kind = "macvlan";
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# MACAddress = "00:00:5e:00:02:05";
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# };
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# macvlanConfig.Mode = "bridge";
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# };
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# "00-vrrp-3" = {
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# netdevConfig = {
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# Name = "vrrp-3";
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# Kind = "macvlan";
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# MACAddress = "00:00:5e:00:03:05";
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# };
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# macvlanConfig.Mode = "bridge";
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# };
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"10-${devices}" = {
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netdevConfig = {
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Name = devices;
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Kind = "vlan";
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};
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vlanConfig.Id = 30;
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};
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"10-${wifi}" = {
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netdevConfig = {
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Name = wifi;
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Kind = "vlan";
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};
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vlanConfig.Id = 40;
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};
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"20-${bridge}" = {
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netdevConfig = {
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Kind = "bridge";
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Name = bridge;
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};
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};
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};
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networks = {
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# "05-vrrp" = {
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# matchConfig.Name = "vrrp-*";
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# linkConfig.RequiredForOnline = "routable";
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# networkConfig = {
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# DHCP = "ipv6";
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# IPv6AcceptRA = true;
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# DNSOverTLS = true;
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# DNSSEC = true;
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# IPv6PrivacyExtensions = true;
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# IPForward = true;
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# LinkLocalAddressing = "ipv6";
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# };
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# dhcpV6Config.PrefixDelegationHint = "::/64";
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# };
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"06-${wan}" = {
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matchConfig.Name = wan;
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linkConfig.RequiredForOnline = "routable";
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networkConfig = {
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DHCP = true;
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IPv6AcceptRA = true;
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DNSOverTLS = true;
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DNSSEC = true;
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IPv6PrivacyExtensions = true;
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IPForward = true;
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LinkLocalAddressing = "ipv6";
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# MACVLAN = [ "vrrp-1" "vrrp-2" "vrrp-3" ];
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};
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};
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"30-${lan}" = {
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matchConfig.Name = lan;
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linkConfig.RequiredForOnline = "enslaved";
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networkConfig = {
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Bridge = bridge;
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ConfigureWithoutCarrier = true;
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VLAN = [ devices wifi ];
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};
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};
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"40-${bridge}" = {
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matchConfig.Name = bridge;
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bridgeConfig = { };
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address = [
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"192.168.20.1/24"
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];
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networkConfig = {
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ConfigureWithoutCarrier = true;
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IPv6SendRA = true;
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DHCPPrefixDelegation = true;
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LinkLocalAddressing = "ipv6";
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};
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linkConfig.RequiredForOnline = "no";
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};
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"50-${devices}" = {
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matchConfig = {
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Name = devices;
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Type = "vlan";
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};
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address = [
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"192.168.30.1/24"
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];
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networkConfig = { };
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linkConfig.RequiredForOnline = "routable";
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};
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"50-${wifi}" = {
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matchConfig = {
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Name = wifi;
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Type = "vlan";
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};
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address = [
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"192.168.40.1/24"
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];
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networkConfig = { };
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linkConfig.RequiredForOnline = "routable";
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};
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};
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};
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networking = {
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inherit hostName;
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useNetworkd = true;
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useDHCP = false;
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nat.enable = false;
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firewall.enable = false;
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nftables = {
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enable = true;
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checkRuleset = false;
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ruleset = ''
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define WAN=${wan}
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define LAN=${lan}
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define BRIDGE=${bridge}
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define DEVICES=${devices}
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define WIFI=${wifi}
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define HTTP_HOST=192.168.20.200
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define FORGEJO_HOST=192.168.20.201
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define FORGEJO_SSH_PORT=2222
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define DRAWPILE_HOST=192.168.20.202
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define DRAWPILE_TCP_PORT=27750
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table inet filter {
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set hosted_services_tcp {
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type inet_service; flags interval;
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elements = { 22, 80, 443, $DRAWPILE_TCP_PORT }
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}
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set internal_access_tcp {
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type inet_service; flags interval;
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elements = { 22, 3128 }
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}
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set internal_access_udp {
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type inet_service; flags interval;
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elements = { 51820 }
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}
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set network_required_udp {
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type inet_service; flags interval;
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elements = { 53, 67, 68, 546, 547 }
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}
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set firewall_out_tcp_accepted {
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type inet_service; flags interval;
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elements = { 22, 53, 80, 443, 853 }
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}
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set firewall_out_udp_accepted {
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type inet_service; flags interval;
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elements = { 53, 123, 67, 68, 546, 547 }
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}
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chain global {
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ct state { established, related } accept
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ct state invalid drop
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ip protocol icmp accept
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ip6 nexthdr icmpv6 accept
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}
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chain reject_politely {
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reject with icmp type port-unreachable
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}
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chain bridge_in {
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tcp dport @hosted_services_tcp ct state new accept comment "Allow bridge access to router services"
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}
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chain bridge_out {
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accept
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}
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chain devices_in {}
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chain devices_out {
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udp dport 123 ct state new accept comment "Allow NTP from devices network"
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tcp dport { 80, 443 } ct state new accept comment "Allow HTTP/S from devices network"
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}
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chain wifi_in {}
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chain wifi_out {
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accept
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}
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chain rate_limit {
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flow table rate-limit-ftable { ip saddr limit rate 2/minute } accept comment "Allow rate limited"
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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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jump global
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oifname vmap {
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$BRIDGE : jump bridge_in,
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$DEVICES : jump devices_in,
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$WIFI : jump wifi_in
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}
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oifname $WAN iifname vmap {
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$BRIDGE : jump bridge_out,
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$DEVICES : jump devices_out,
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$WIFI : jump wifi_out
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}
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}
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chain input {
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type filter hook input priority 0; policy drop;
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jump global
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iifname lo accept
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tcp dport @internal_access_tcp ct state new iifname vmap {
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$BRIDGE : accept,
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$DEVICES : jump reject_politely,
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$WIFI : jump rate_limit,
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$WAN : jump rate_limit
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}
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udp dport @internal_access_udp ct state new iifname vmap {
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$BRIDGE : accept,
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$DEVICES : jump reject_politely,
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$WIFI : jump rate_limit,
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$WAN : jump rate_limit
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}
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udp dport @network_required_udp ct state new accept comment "Allow internal network required stuff"
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jump reject_politely
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}
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chain output {
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type filter hook output priority 100; policy drop;
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jump global
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tcp dport @firewall_out_tcp_accepted ct state new accept
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udp dport @firewall_out_udp_accepted ct state new accept
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jump reject_politely
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}
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}
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table ip nat {
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chain prerouting {
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type nat hook prerouting priority -100; policy accept;
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fib daddr type local tcp dport { 80, 443 } dnat to $HTTP_HOST
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fib daddr type local tcp dport 22 dnat to $FORGEJO_HOST:$FORGEJO_SSH_PORT
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fib daddr type local tcp dport $DRAWPILE_TCP_PORT dnat to $DRAWPILE_HOST
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}
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chain postrouting {
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type nat hook postrouting priority 100; policy accept;
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oifname $WAN masquerade
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oifname $BRIDGE masquerade
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}
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}
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'';
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};
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};
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services.openssh.ports = [ 22 3128 ];
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services.resolved.enable = false;
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services.dnsmasq = {
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enable = true;
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settings = {
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server = [ "9.9.9.9" "9.9.9.10" ];
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domain-needed = true;
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bogus-priv = true;
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no-resolv = true;
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# dhcpv6 stuff
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# enable-ra = true;
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# dhcp-authoritative = true;
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# strict-order = true;
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cache-size = 1000;
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dhcp-range = [
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# format TAG,START,END,?MASK,?options,LEASE
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"${bridge},192.168.20.50,192.168.20.90,24h"
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"${devices},192.168.30.10,192.168.30.240,24h"
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"${wifi},192.168.40.10,192.168.40.240,24h"
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];
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interface = [ bridge devices wifi ];
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dhcp-option = [
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"${bridge},option:router,192.168.20.1"
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"${bridge},option:dns-server,192.168.20.1"
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"${devices},option:router,192.168.30.1"
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"${devices},option:dns-server,192.168.30.1"
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"${wifi},option:router,192.168.40.1"
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"${wifi},option:dns-server,192.168.40.1"
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];
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local = "/lan/";
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domain = "lan";
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expand-hosts = true;
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no-hosts = true;
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address = [
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"/router.lan/192.168.20.1"
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];
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};
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};
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services.irqbalance.enable = false;
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}
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