ssh: keepalive

modules/user.nix

@@ -10,6 +10,7 @@
     ./user/neofetch.nix
     ./user/qt.nix
     ./user/sops.nix
+    ./user/ssh.nix
     ./user/waybar.nix
     ./user/yazi.nix
     ./user/zsh.nix

modules/user/ssh.nix

@@ -0,0 +1,12 @@
+{
+  programs.ssh = {
+    enable = true;
+    enableDefaultConfig = false;
+    matchBlocks = {
+      "*" = {
+        serverAliveInterval = 30;
+        serverAliveCountMax = 5;
+      };
+    };
+  };
+}