109 lines
2.8 KiB
Nix
109 lines
2.8 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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let
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cfg = config.services.technitium-dns-server;
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stateDir = "/var/lib/technitium-dns-server";
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inherit (lib)
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mkEnableOption
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mkPackageOption
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mkOption
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mkIf
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types
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;
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in
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{
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options.services.technitium-dns-server = {
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enable = mkEnableOption "Technitium DNS Server";
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package = mkPackageOption pkgs "technitium-dns-server" { };
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openFirewall = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to open ports in the firewall.
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Standard ports are 53 (UDP and TCP, for DNS), 5380 and 53443 (TCP, HTTP and HTTPS for web interface).
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Specify different or additional ports in options firewallUDPPorts and firewallTCPPorts if necessary.
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'';
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};
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firewallUDPPorts = mkOption {
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type = with types; listOf int;
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default = [ 53 ];
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description = ''
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List of UDP ports to open in firewall.
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'';
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};
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firewallTCPPorts = mkOption {
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type = with types; listOf int;
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default = [
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53
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5380 # web interface HTTP
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53443 # web interface HTTPS
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];
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description = ''
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List of TCP ports to open in firewall.
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You might want to open ports 443 and 853 if you intend to use DNS over HTTPS or DNS over TLS.
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'';
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};
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};
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config = mkIf cfg.enable {
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systemd.services.technitium-dns-server = {
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description = "Technitium DNS Server";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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serviceConfig = {
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ExecStart = "${cfg.package}/bin/technitium-dns-server ${stateDir}";
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DynamicUser = true;
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StateDirectory = "technitium-dns-server";
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WorkingDirectory = stateDir;
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BindPaths = stateDir;
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Restart = "always";
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RestartSec = 10;
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TimeoutStopSec = 10;
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KillSignal = "SIGINT";
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# Harden the service
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LockPersonality = true;
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NoNewPrivileges = true;
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PrivateDevices = true;
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PrivateMounts = true;
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PrivateTmp = true;
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ProtectClock = true;
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ProtectControlGroups = true;
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ProtectHome = true;
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ProtectHostname = true;
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ProtectKernelLogs = true;
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ProtectKernelModules = true;
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ProtectKernelTunables = true;
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ProtectSystem = "strict";
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RemoveIPC = true;
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RestrictAddressFamilies = "AF_INET AF_INET6 AF_UNIX AF_NETLINK";
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RestrictNamespaces = true;
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RestrictRealtime = true;
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RestrictSUIDSGID = true;
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AmbientCapabilities = [ "CAP_NET_BIND_SERVICE" ];
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CapabilityBoundingSet = [ "CAP_NET_BIND_SERVICE" ];
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};
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};
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networking.firewall = mkIf cfg.openFirewall {
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allowedUDPPorts = cfg.firewallUDPPorts;
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allowedTCPPorts = cfg.firewallTCPPorts;
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};
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};
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meta.maintainers = with lib.maintainers; [ fabianrig ];
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}
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