diff --git a/common/base-server.nix b/common/base-server.nix
index 82b39d9..acf31db 100644
--- a/common/base-server.nix
+++ b/common/base-server.nix
@@ -33,4 +33,21 @@
   boot.kernelParams = [
     "panic=30" "boot.panic_on_fail"
   ];
+
+  boot.kernel.sysctl = {
+    # Set default TCP congestion control algorithm
+    "net.ipv4.tcp_congestion_control" = "bbr";
+
+    # Enable ECN
+    "net.ipv4.tcp_ecn" = 1;
+
+    # Enable TCP fast open
+    "net.ipv4.tcp_fastopen" = 3;
+  };
+
+  # reduce closure size, feel free to add your locale here
+  i18n.supportedLocales = [
+    "en_US.UTF-8/UTF-8"
+    "fr_FR.UTF-8/UTF-8"
+  ];
 }