Node.js - simple example and EPERM error

var server = require('http').createServer(function(req, res){

});

server.listen(8080);

This simple example return error in console:

node node_server.js

node.js:201
    throw e; // process.nextTick error, or 'error' event on first tick
          ^
Error: listen EPERM
    at errnoException (net.js:670:11)
    at Array.0 (net.js:756:28)
    at EventEmitter._tickCallback (node.js:192:41)

What is going on?