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use bind for local dns

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This commit is contained in:
Noah Masur 2023-07-18 03:52:37 +00:00
parent 9e8bac6834
commit 22cba9acac
7 changed files with 88 additions and 61 deletions
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1
flake.nix
View File

@ -126,7 +126,6 @@
mail.smtpHost = "smtp.purelymail.com";
dotfilesRepo = "git@github.com:nmasur/dotfiles";
hostnames = {
zone = baseName;
git = "git.${baseName}";
metrics = "metrics.${baseName}";
prometheus = "prom.${baseName}";

1
hosts/swan/default.nix
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@ -53,6 +53,7 @@ inputs.nixpkgs.lib.nixosSystem {
dotfiles.enable = true;
arrs.enable = true;
services.bind.enable = true;
services.caddy.enable = true;
services.jellyfin.enable = true;
services.nextcloud.enable = true;

7
modules/nixos/hardware/networking.nix
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@ -10,6 +10,9 @@
services.avahi = {
enable = true;
domainName = "local";
ipv6 = false; # Should work either way
# Resolve local hostnames using Avahi DNS
nssmdns = true;
publish = {
enable = true;
addresses = true;
@ -17,10 +20,6 @@
workstation = true;
};
};
# Resolve local hostnames using Avahi DNS
services.avahi.nssmdns = true;
};
}

30
modules/nixos/services/bind.nix
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@ -1,12 +1,27 @@
{ pkgs, ... }: {
{ config, pkgs, lib, ... }:
config = {
let
localIp = "192.168.1.218";
localServices = [
config.hostnames.stream
config.hostnames.content
config.hostnames.books
config.hostnames.download
];
mkRecord = service: "${service} A ${localIp}";
localRecords = lib.concatLines (map mkRecord localServices);
in {
config = lib.mkIf config.services.bind.enable {
caddy.cidrAllowlist = [ "192.168.0.0/16" ];
services.bind = {
cacheNetworks = [ "192.168.0.0/16" ];
cacheNetworks = [ "127.0.0.0/24" "192.168.0.0/16" ];
forwarders = [ "1.1.1.1" "1.0.0.1" ];
ipv4Only = true;
# Use rpz zone as an override
extraOptions = ''response-policy { zone "rpz"; };'';
@ -25,13 +40,16 @@
)
IN NS localhost.
localhost A 127.0.0.1
stream A 192.168.0.218
${localRecords}
'';
};
};
};
networking.firewall.allowedTCPPorts = [ 53 ];
networking.firewall.allowedUDPPorts = [ 53 ];
};
}

101
modules/nixos/services/caddy.nix
View File

@ -1,55 +1,70 @@
{ config, pkgs, lib, ... }: {
options = {
caddy.tlsPolicies = lib.mkOption {
type = lib.types.listOf lib.types.attrs;
description = "Caddy JSON TLS policies";
default = [ ];
};
caddy.routes = lib.mkOption {
type = lib.types.listOf lib.types.attrs;
description = "Caddy JSON routes for http servers";
default = [ ];
};
caddy.blocks = lib.mkOption {
type = lib.types.listOf lib.types.attrs;
description = "Caddy JSON error blocks for http servers";
default = [ ];
caddy = {
tlsPolicies = lib.mkOption {
type = lib.types.listOf lib.types.attrs;
description = "Caddy JSON TLS policies";
default = [ ];
};
routes = lib.mkOption {
type = lib.types.listOf lib.types.attrs;
description = "Caddy JSON routes for http servers";
default = [ ];
};
blocks = lib.mkOption {
type = lib.types.listOf lib.types.attrs;
description = "Caddy JSON error blocks for http servers";
default = [ ];
};
cidrAllowlist = lib.mkOption {
type = lib.types.listOf lib.types.str;
description = "CIDR blocks to allow for requests";
default = [ "127.0.0.1/32" ];
};
};
};
config =
lib.mkIf (config.services.caddy.enable && config.caddy.routes != [ ]) {
config = lib.mkIf config.services.caddy.enable {
services.caddy = {
adapter = "''"; # Required to enable JSON
configFile = pkgs.writeText "Caddyfile" (builtins.toJSON {
apps.http.servers.main = {
listen = [ ":443" ];
routes = config.caddy.routes;
errors.routes = config.caddy.blocks;
# logs = { }; # Uncomment to collect access logs
# Force Caddy to 403 if not coming from allowlisted source
caddy.routes = [{
match = [{ not = [{ remote_ip.ranges = config.caddy.cidrAllowlist; }]; }];
handle = [{
handler = "static_response";
status_code = "403";
}];
}];
services.caddy = {
adapter = "''"; # Required to enable JSON
configFile = pkgs.writeText "Caddyfile" (builtins.toJSON {
apps.http.servers.main = {
listen = [ ":443" ];
routes = config.caddy.routes;
errors.routes = config.caddy.blocks;
# logs = { }; # Uncomment to collect access logs
};
apps.http.servers.metrics = { }; # Enables Prometheus metrics
apps.tls.automation.policies = config.caddy.tlsPolicies;
logging.logs.main = {
encoder = { format = "console"; };
writer = {
output = "file";
filename = "${config.services.caddy.logDir}/caddy.log";
roll = true;
};
apps.http.servers.metrics = { }; # Enables Prometheus metrics
apps.tls.automation.policies = config.caddy.tlsPolicies;
logging.logs.main = {
encoder = { format = "console"; };
writer = {
output = "file";
filename = "${config.services.caddy.logDir}/caddy.log";
roll = true;
};
level = "INFO";
};
});
};
networking.firewall.allowedTCPPorts = [ 80 443 ];
networking.firewall.allowedUDPPorts = [ 443 ];
prometheus.scrapeTargets = [ "127.0.0.1:2019" ];
level = "INFO";
};
});
};
networking.firewall.allowedTCPPorts = [ 80 443 ];
networking.firewall.allowedUDPPorts = [ 443 ];
prometheus.scrapeTargets = [ "127.0.0.1:2019" ];
};
}

8
modules/nixos/services/cloudflare.nix
View File

@ -41,13 +41,7 @@ in {
config = lib.mkIf config.cloudflare.enable {
# Forces Caddy to error if coming from a non-Cloudflare IP
caddy.routes = [{
match = [{ not = [{ remote_ip.ranges = cloudflareIpRanges; }]; }];
handle = [{
handler = "static_response";
status_code = "403";
}];
}];
caddy.cidrAllowlist = cloudflareIpRanges;
# Tell Caddy to use Cloudflare DNS for ACME challenge validation
services.caddy.package = (pkgs.callPackage ../../../overlays/caddy.nix {

1
modules/nixos/services/default.nix
View File

@ -3,6 +3,7 @@
imports = [
./arr.nix
./backups.nix
./bind.nix
./caddy.nix
./calibre.nix
./cloudflare-tunnel.nix