Port 80 is based on web services, so it cannot be connected and controlled. After access, we can only look for script vulnerabilities from the web, and port 2 1 is an ftp protocol. You need to use the command FTP192.168.0.100 to connect, but you don't need a user name and password. After the connection is successful, it can be uploaded to the back door for control. If you don't know the password, for example, ser-5.0 and the lower version of Microsoft have overflow vulnerabilities, and the permissions can be lifted after the overflow is successful, so it is difficult for these two ports to directly invade successfully and can only play an auxiliary role.
2. If you use DOS command, how can xp start DOS? (Steps are properly detailed)
Start-Run-cmd
If you need to use tools, which ones are better?
Streamer 5.0 is certainly suitable for beginners if it is a tool. Put all the tools together.