{ ... }:
{
  config.dendritic.features.security-systemd-sshd = {
    nixosModules = [
      (
        { ... }:
        {
          systemd.services.sshd.serviceConfig = {
            # NoNewPrivileges = true;
            ProtectSystem = "strict";
            ProtectHome = "read-only";
            ProtectClock = true;
            ProtectHostname = true;
            ProtectKernelTunables = true;
            ProtectKernelModules = true;
            ProtectKernelLogs = true;
            ProtectControlGroups = true;
            ProtectProc = "invisible";
            PrivateTmp = true;
            PrivateMounts = true;
            PrivateDevices = true;
            RestrictNamespaces = true;
            RestrictRealtime = true;
            # RestrictSUIDSGID = true;
            MemoryDenyWriteExecute = true;
            LockPersonality = true;
            DevicePolicy = "closed";
            SystemCallFilter = [
              "~@keyring"
              "~@swap"
              "~@clock"
              "~@module"
              "~@obsolete"
              "~@cpu-emulation"
            ];
            SystemCallArchitectures = "native";
          };
        }
      )
    ];
  };
}