diff --git a/packages/portfwd.nix b/packages/portfwd.nix
new file mode 100644
index 0000000..3e43f76
--- /dev/null
+++ b/packages/portfwd.nix
@@ -0,0 +1,20 @@
+{ writeShellApplication, openssh, ... }:
+
+writeShellApplication {
+  name = "portfwd";
+  meta.description = ''
+    Forward a local port to the same port on a remote host over SSH.
+    Usage: portfwd <port> [host]   (host defaults to pureintent)
+    e.g. `portfwd 7721` or `portfwd 7721 sincereintent`
+  '';
+  runtimeInputs = [ openssh ];
+  text = ''
+    if [ "$#" -lt 1 ] || [ "$#" -gt 2 ]; then
+      echo "usage: portfwd <port> [host]" >&2
+      exit 1
+    fi
+    port="$1"
+    host="''${2:-pureintent}"
+    ssh -L "$port:localhost:$port" "$host"
+  '';
+}