234 lines
8.7 KiB
Nix
234 lines
8.7 KiB
Nix
{ ... }: {
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networking = {
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nat.enable = false;
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nftables = {
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# enable = true;
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# tables = {
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# "cloonar-fw" = {
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# family = "inet";
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# content = ''
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# chain output {
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# type filter hook output priority 100; policy accept;
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# }
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#
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# chain input {
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# type filter hook input priority filter; policy drop;
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#
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# # accept any localhost traffic
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# iifname lo accept
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#
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# # Allow trusted networks to access the router
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# iifname {
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# "wan", # disable when final
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# "lan",
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# "wg_cloonar"
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# } counter accept
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#
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# # Allow networks to access the dns and dhcp
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# iifname {
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# "lan",
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# "vb-*",
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# "podman0",
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# "infrastructure",
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# "wg_cloonar",
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# "smart",
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# "multimedia"
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# } udp dport { 53, 67, 68 } counter accept
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# iifname {
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# "lan",
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# "podman0",
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# "vb-*",
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# "infrastructure",
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# "wg_cloonar",
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# "smart",
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# "multimedia"
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# } tcp dport { 80, 443, 853 } counter accept
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#
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# # Accept mDNS for avahi reflection
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# # iifname "multimedia" ip saddr <chromecast IP> tcp dport { llmnr } counter accept
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# # iifname "multimedia" ip saddr <chromecast IP> udp dport { mdns, llmnr } counter accept
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#
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# # Allow returning traffic from wg_cloonar and drop everthing else
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# iifname "wg_cloonar" ct state { established, related } counter accept
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# iifname "wg_cloonar" drop
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#
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# iifname "wan" ct state { established, related } accept comment "Allow established traffic"
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# iifname "wan" icmp type { echo-request, destination-unreachable, time-exceeded } counter accept comment "Allow select ICMP"
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# iifname "wan" counter drop comment "Drop all other unsolicited traffic from wan"
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# }
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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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#
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# # enable flow offloading for better throughput
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# # ip protocol { tcp, udp } flow offload @f
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#
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# # multimedia airplay
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# iifname "multimedia" oifname { "lan" } counter accept
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#
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# # lan and vpn to any
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# # TODO: disable wan when finished
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# iifname { "wan", "lan", "vb-*", "podman0", "wg_cloonar" } oifname { "lan", "vb-*", "podman0", "infrastructure", "multimedia", "smart", "wrwks", "wg_cloonar", "wg_epicenter", "wg_ghetto_at" } counter accept
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# iifname { "infrastructure" } oifname { "podman0", "vb-omada" } counter accept
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#
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# # Allow trusted network WAN access
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# iifname {
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# "lan",
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# "infrastructure",
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# "vb-*",
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# "podman0",
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# "multimedia",
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# "smart",
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# "wg_cloonar",
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# } oifname {
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# "wan",
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# } counter accept comment "Allow trusted LAN to WAN"
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# }
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# '';
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# };
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# "cloonar-nat" = {
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# family = "ip";
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# content = ''
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# chain prerouting {
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# type nat hook prerouting priority filter; policy accept;
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# }
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#
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# # Setup NAT masquerading on external interfaces
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# chain postrouting {
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# type nat hook postrouting priority filter; policy accept;
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# oifname { "wan", "wrwks", "wg_epicenter", "wg_ghetto_at" } masquerade
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# # iifname { "vb-*" } oifname { "server" } masquerade comment "from internal interfaces"
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# }
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# ''
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# };
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# };
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};
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nftables = {
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enable = true;
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ruleset = ''
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table inet filter {
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# enable flow offloading for better throughput
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# flowtable f {
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# hook ingress priority 0;
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# devices = { lan, server, wg_cloonar, smart, multimedia, guest };
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# }
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chain output {
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type filter hook output priority 100; policy accept;
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}
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chain input {
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type filter hook input priority filter; policy drop;
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# accept any localhost traffic
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iifname lo accept
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# Allow trusted networks to access the router
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iifname {
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"server",
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"vserver",
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"lan",
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"wg_cloonar"
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} counter accept
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# Allow networks to access the dns and dhcp
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iifname {
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"lan",
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"server",
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"vserver",
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"infrastructure",
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"wg_cloonar",
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"smart",
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"multimedia"
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} udp dport { 53, 67, 68 } counter accept
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iifname {
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"lan",
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"server",
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"vserver",
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"vb-*",
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"infrastructure",
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"wg_cloonar",
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"smart",
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"multimedia"
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} tcp dport { 80, 443, 853 } counter accept
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# Accept mDNS for avahi reflection
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# iifname "multimedia" ip saddr <chromecast IP> tcp dport { llmnr } counter accept
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# iifname "multimedia" ip saddr <chromecast IP> udp dport { mdns, llmnr } counter accept
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# Accept web to git server
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iifname "wan" oifname "server" tcp dst 10.42.97.50 dport { 22, 80, 443 } counter accept
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# Allow returning traffic from wg_cloonar and drop everthing else
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iifname "wg_cloonar" ct state { established, related } counter accept
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iifname "wg_cloonar" drop
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# Allow returning traffic from wrwks and drop everthing else
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iifname "wrwks" ct state { established, related } counter accept
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iifname "wrwks" drop
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# Allow returning traffic from wg_epicenter and drop everthing else
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iifname "wg_epicenter" ct state { established, related } counter accept
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iifname "wg_epicenter" drop
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# Allow returning traffic from wg_ghetto_at and drop everthing else
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iifname "wg_ghetto_at" ct state { established, related } counter accept
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iifname "wg_ghetto_at" drop
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# Allow returning traffic from wan and drop everthing else
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iifname "wan" ct state { established, related } accept comment "Allow established traffic"
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iifname "wan" icmp type { echo-request, destination-unreachable, time-exceeded } counter accept comment "Allow select ICMP"
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iifname "wan" counter drop comment "Drop all other unsolicited traffic from wan"
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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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# enable flow offloading for better throughput
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# ip protocol { tcp, udp } flow offload @f
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# multimedia airplay
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iifname "multimedia" oifname { "lan" } counter accept
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# lan and vpn to any
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# TODO: disable wan when finished
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iifname { "lan", "server", "vserver", "wg_cloonar" } oifname { "lan", "vb-*", "server", "vserver", "infrastructure", "multimedia", "smart", "wg_cloonar" } counter accept
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iifname { "lan", "server", "wg_cloonar" } oifname { "wrwks", "wg_epicenter", "wg_ghetto_at" } counter accept
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iifname { "infrastructure" } oifname { "server", "vserver" } counter accept
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# allow all established, related
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ct state { established, related } accept comment "Allow established traffic"
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# Allow trusted network WAN access
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iifname {
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"lan",
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"infrastructure",
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"server",
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"vserver",
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"multimedia",
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"smart",
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"wg_cloonar",
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} oifname {
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"wan",
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} counter accept comment "Allow trusted LAN to WAN"
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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 filter; policy accept;
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iifname "wan" tcp dport { 22, 80, 443 } dnat to 10.42.97.50
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}
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# Setup NAT masquerading on external interfaces
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chain postrouting {
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type nat hook postrouting priority filter; policy accept;
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oifname { "wan", "wrwks", "wg_epicenter", "wg_ghetto_at" } masquerade
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ip daddr 10.42.97.50 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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}
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