diff --git a/lib/dgram.js b/lib/dgram.js
index 7db3f16e0b..f5a2ae21a7 100644
--- a/lib/dgram.js
+++ b/lib/dgram.js
@@ -252,11 +252,25 @@ Socket.prototype.send = function(buffer,
   if (!util.isBuffer(buffer))
     throw new TypeError('First argument must be a buffer object.');
 
+  offset = offset | 0;
+  if (offset < 0)
+    throw new RangeError('Offset should be >= 0');
+
   if (offset >= buffer.length)
-    throw new Error('Offset into buffer too large');
+    throw new RangeError('Offset into buffer too large');
+
+  // Sending a zero-length datagram is kind of pointless but it _is_
+  // allowed, hence check that length >= 0 rather than > 0.
+  length = length | 0;
+  if (length < 0)
+    throw new RangeError('Length should be >= 0');
 
   if (offset + length > buffer.length)
-    throw new Error('Offset + length beyond buffer length');
+    throw new RangeError('Offset + length beyond buffer length');
+
+  port = port | 0;
+  if (port <= 0 || port > 65535)
+    throw new RangeError('Port should be > 0 and < 65536');
 
   callback = callback || noop;
 
diff --git a/test/simple/test-dgram-close.js b/test/simple/test-dgram-close.js
index 58d7aa786c..90ba05a2ca 100644
--- a/test/simple/test-dgram-close.js
+++ b/test/simple/test-dgram-close.js
@@ -30,6 +30,5 @@ var buf = new Buffer(1024);
 buf.fill(42);
 
 var socket = dgram.createSocket('udp4');
-
-socket.send(buf, 0, buf.length, common.port, 'localhost');
+socket.send(buf, 0, buf.length, common.PORT, 'localhost');
 socket.close();
diff --git a/test/simple/test-dgram-send-bad-arguments.js b/test/simple/test-dgram-send-bad-arguments.js
new file mode 100644
index 0000000000..a9a12d4581
--- /dev/null
+++ b/test/simple/test-dgram-send-bad-arguments.js
@@ -0,0 +1,40 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+var common = require('../common');
+var assert = require('assert');
+var dgram = require('dgram');
+
+var buf = Buffer('test');
+var host = '127.0.0.1';
+var sock = dgram.createSocket('udp4');
+
+assert.throws(function() {
+  sock.send();
+}, TypeError);  // First argument should be a buffer.
+
+assert.throws(function() { sock.send(buf, -1, 1, 1, host);    }, RangeError);
+assert.throws(function() { sock.send(buf, 1, -1, 1, host);    }, RangeError);
+assert.throws(function() { sock.send(buf, 1, 1, -1, host);    }, RangeError);
+assert.throws(function() { sock.send(buf, 5, 1, 1, host);     }, RangeError);
+assert.throws(function() { sock.send(buf, 1, 5, 1, host);     }, RangeError);
+assert.throws(function() { sock.send(buf, 1, 1, 0, host);     }, RangeError);
+assert.throws(function() { sock.send(buf, 1, 1, 65536, host); }, RangeError);