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nftables: fix buggy ip6 nexthdr
[sourcephile-nix.git] / hosts / losurdo / networking / nftables.nix
1 { pkgs, lib, config, ... }:
2 let
3 inherit (builtins) hasAttr readFile;
4 inherit (pkgs.lib) unlinesAttrs;
5 inherit (config) networking;
6 inherit (config.users) users groups;
7 in
8 {
9 networking.firewall.enable = false;
10 systemd.services.disable-kernel-module-loading.after = [ "nftables.service" ];
11 systemd.services.nftables.serviceConfig.TimeoutStartSec = "20";
12 networking.nftables = {
13 enable = true;
14 ruleset = lib.mkBefore ''
15 table inet filter {
16 include "${../../../networking/nftables/filter.txt}"
17 # A set containing the udp port(s) to which SSDP replies are allowed.
18 set ssdp_out {
19 type inet_service
20 timeout 5s
21 }
22 chain net2fw {
23 #udp dport mdns ip6 daddr ff02::fb counter accept comment "Accept mDNS"
24 #udp dport mdns ip daddr 224.0.0.251 counter accept comment "Accept mDNS"
25 #jump non-internet
26
27 #ct state new add @connlimit { ip saddr ct count over 20 } counter tcp reject with tcp reset
28
29 # Some .nix append rules here with: add rule inet filter net2fw ...
30 }
31 chain fw2net {
32 tcp dport { 80, 443 } counter accept comment "HTTP"
33 udp dport 123 skuid ${users.systemd-timesync.name} counter accept comment "NTP"
34 tcp dport 1965 counter accept comment "Gemini"
35 tcp dport 9418 counter accept comment "Git"
36
37 # Some .nix append rules here with: add rule inet filter fw2net ...
38 }
39 chain wifi2fw {
40 # Some .nix append rules here with: add rule inet filter wifi2fw ...
41 }
42 chain fw2wifi {
43 # Some .nix append rules here with: add rule inet filter fw2wifi ...
44 }
45 chain fwd-wifi {
46 # Some .nix append rules here with: add rule inet filter fwd-wifi ...
47 }
48
49 chain input {
50 type filter hook input priority filter
51 policy drop
52
53 iifname lo accept
54
55 jump check-tcp
56 ct state { established, related } accept
57 jump accept-connectivity-input
58 ct state invalid counter drop
59
60 # admin services
61 tcp dport 22 counter accept comment "SSH"
62 udp dport 60000-61000 counter accept comment "Mosh"
63
64 # Some .nix append gotos here with: add rule inet filter input iffname ... goto ...
65 }
66 chain forward {
67 type filter hook forward priority filter
68 policy drop
69
70 #tcp flags syn tcp option maxseg size set rt mtu
71 ct state { related, established } accept
72 jump accept-connectivity-forward
73 }
74 chain output {
75 type filter hook output priority filter
76 policy drop
77
78 oifname lo accept
79
80 tcp flags syn tcp option maxseg size set rt mtu
81
82 ct state { related, established } accept
83 jump accept-connectivity-output
84
85 tcp dport 22 counter accept comment "SSH"
86
87 # Some .nix append gotos here with: add rule inet filter output oifname ... goto ...
88 }
89 }
90 table inet nat {
91 chain prerouting {
92 type nat hook prerouting priority filter
93 policy accept
94 }
95 chain postrouting {
96 type nat hook postrouting priority srcnat
97 policy accept
98 }
99 }
100 '';
101 };
102 }