public void ifacesUP(){
    	
		Enumeration keys = NetworkInterfacetable.keys();

		while(keys.hasMoreElements()){

			String str = (String)keys.nextElement();

			NetworkInterface temp = (NetworkInterface)NetworkInterfacetable.get(str);

			if(temp.isActive() && temp.isUP() == false)
				temp.UP();
			else
				temp.setUP();
		}
    }