diff --git a/m/common/main.nix b/m/common/main.nix
index e43ce4fb0ad5dec7ee6600e5de1852884bb5eb32..705449558cb38a1cd1c48573764ca5515ad8d456 100644
--- a/m/common/main.nix
+++ b/m/common/main.nix
@@ -6,6 +6,7 @@
     ./fs.nix
     ./hw.nix
     ./net.nix
+    ./ntp.nix
     ./slurm.nix
     ./ssh.nix
     ./users.nix
diff --git a/m/common/net.nix b/m/common/net.nix
index 1173cc2d3de475e51b71d9f27388de2c7787bbeb..4970f405fb6ba2b97a0e9e6b7349ceffc25a05e4 100644
--- a/m/common/net.nix
+++ b/m/common/net.nix
@@ -8,7 +8,7 @@
   networking = {
     enableIPv6 = false;
     useDHCP = false;
-    #defaultGateway = "10.0.40.30";
+    defaultGateway = "10.0.40.30";
     nameservers = ["8.8.8.8"];
     proxy = {
       default = "http://localhost:23080/";
diff --git a/m/common/ntp.nix b/m/common/ntp.nix
new file mode 100644
index 0000000000000000000000000000000000000000..d4ddb252d7ce5df92a59760fa3807381d8238b72
--- /dev/null
+++ b/m/common/ntp.nix
@@ -0,0 +1,9 @@
+{ pkgs, ... }:
+
+{
+  services.ntp.enable = true;
+
+  # Use the NTP server at BSC, as we don't have direct access
+  # to the outside world
+  networking.timeServers = [ "84.88.52.36" ];
+}