(When you see this topic, you may be a little strange. How to put these words together? In fact, it is a commonplace to talk about ports and Trojans, but even if it is a common talk, there are still many people's computers that have been washed by the "shock wave". After being severely shaken by the "Shockwave", it seems necessary to talk about the old topic again, so as not to be meekly swept by the wave. In fact, the ultimate purpose of these is to ensure the safety of the computer online.)