When I type hn on my Mac running OSX Mavericks I get
stream.js:94 throw er; // Unhandled stream error in pipe. ^ Error: CERT_UNTRUSTED at SecurePair.<anonymous> (tls.js:1365:32) at SecurePair.emit (events.js:92:17) at SecurePair.maybeInitFinished (tls.js:977:10) at CleartextStream.read [as _read] (tls.js:469:13) at CleartextStream.Readable.read (_stream_readable.js:323:10) at EncryptedStream.write [as _write] (tls.js:366:25) at doWrite (_stream_writable.js:226:10) at writeOrBuffer (_stream_writable.js:216:5) at EncryptedStream.Writable.write (_stream_writable.js:183:11) at write (_stream_readable.js:585:24)