????:1????400?3????:????????

2????????

3????????

4?????VX

5???????

????1????5????? (?? ??????? ??? ??????????)1??4????????????,??? ????????“??”???????????(????“????”)?????

???????????“?????????????”?????? ?? ?

??,“?????”????IP,?????????????????????,???“?????,???”????????,?????“??”,???????????

???,??????????????“?????????”????,??,?????“???+??”?,????????,?????????????????????????,??“????????”??

???,?????????????,???“????”????????????????????????????,???????????????????????????????????????????????????????????,??“???????”?????????

?????,?????“??”????????????????????;?????????“????”?????????????????;??;????????,??????????,??(???????????)

???????:?????????