http error couldn't open socket connection to server nusoap error 13

Hi i'm working on consuming ws from a server and in my pc it works fine, but when I test the code con the server's networks it throws this error:

http error couldn't open socket connection to server nusoap error 13

I tried to test a ws with less parameters, and I recieve the same answer...

error_reporting(E_ALL & ~E_NOTICE); ini_set("display_errors", 1); require_once('libraries/nusoap/nusoap.php'); $resultado = array(); $client = new soapclient2("http://server's_ip:port/wsdl/ITSOAPWebServiceConta?wsdl", true); $error = $client->getError(); $result = ""; if ($client) { $result = $client->call("WSOpreation", array("WSParameter" => "RES")); } if ($client->fault) { $resultado["error"] = true; $resultado["resultado"] = $result; } else { $error = $client->getError(); if ($error) { $resultado["error"] = true; $resultado["resultado"] = $error; } else { $resultado = $result; } } 

Someone may have an idea why i'm getting this error?

Connecting to the host by putty I ping server's ip and everythings looks fine... making a wget to http://server's_ip:port/wsdl/ITSOAPWebServiceConta?wsdl also works fine...

Ps: The server runs on windows