diff --git a/hosts/hebesu/default.nix b/hosts/hebesu/default.nix
index 6649530..28c59bc 100644
--- a/hosts/hebesu/default.nix
+++ b/hosts/hebesu/default.nix
@@ -6,6 +6,14 @@
 
   networking.hostName = "hebesu";
   services.tzupdate.enable = true;
+  services.power-profiles-daemon.enable = false;
+  services.auto-cpufreq.enable = true;
+  services.auto-cpufreq.settings = {
+    charger = {
+      governor = "powersave";
+      turbo = "auto";
+    };
+  };
   services.xserver = {
     videoDrivers = ["modesetting"];
     deviceSection = ''
@@ -18,4 +26,15 @@
     isNormalUser = true;
     extraGroups = ["wheel" "podman"];
   };
+  networking.firewall = {
+    logReversePathDrops = true;
+    extraCommands = ''
+      ip46tables -t mangle -I nixos-fw-rpfilter -p udp -m udp --sport 51820 -j RETURN
+      ip46tables -t mangle -I nixos-fw-rpfilter -p udp -m udp --dport 51820 -j RETURN
+    '';
+    extraStopCommands = ''
+      ip46tables -t mangle -D nixos-fw-rpfilter -p udp -m udp --sport 51820 -j RETURN || true
+      ip46tables -t mangle -D nixos-fw-rpfilter -p udp -m udp --dport 51820 -j RETURN || true
+    '';
+  };
 }