diff --git a/Aliases/lukemftpd b/Aliases/lukemftpd
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index 00000000000..e53081ead72
--- /dev/null
+++ b/Aliases/lukemftpd
@@ -0,0 +1 @@
+../Formula/tnftpd.rb
\ No newline at end of file
diff --git a/Formula/tnftpd.rb b/Formula/tnftpd.rb
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+++ b/Formula/tnftpd.rb
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+class Tnftpd < Formula
+  desc "NetBSD's FTP server (built from macOS Sierra sources)"
+  homepage "https://opensource.apple.com/"
+  url "https://opensource.apple.com/tarballs/lukemftpd/lukemftpd-51.tar.gz"
+  version "20100324"
+  sha256 "969b8a35fabcc82759da2433973b9606b7b62f73527e76ac8f18d0a19f473c2a"
+
+  keg_only :provided_pre_high_sierra
+
+  depends_on :xcode => :build
+
+  def install
+    system "tar", "zxvf", "tnftpd-20100324.tar.gz"
+
+    cd "tnftpd-20100324" do
+      system "./configure"
+      system "make"
+
+      sbin.install "src/tnftpd" => "ftpd"
+      man8.install "src/tnftpd.man" => "ftpd.8"
+      man5.install "src/ftpusers.man" => "ftpusers.5"
+      man5.install "src/ftpd.conf.man" => "ftpd.conf.5"
+      etc.install "examples/ftpd.conf"
+      etc.install "examples/ftpusers"
+      prefix.install_metafiles
+    end
+  end
+
+  def caveats
+    <<~EOS
+      You may need super-user privileges to run this program properly. See the man
+      page for more details.
+    EOS
+  end
+
+  test do
+    # running a whole server, connecting, and so forth is a bit clunky and hard
+    # to write properly so...
+    require "pty"
+    require "expect"
+
+    PTY.spawn "#{sbin}/ftpd -x" do |input, _output, _pid|
+      str = input.expect(/ftpd: illegal option -- x/)
+      assert_match "ftpd: illegal option -- x", str[0]
+    end
+  end
+end