To solve the Telnet invasion in the FTP space to store the Trojan-vulnerability warning-the black bar safety net

Himself a rookie, a lot of noobs like me, learn the 1 3 5-port scan the Administrator of the air interface of the token, and then use the Recton open the other Telnet of 2 3 port for the invasion. Learn this tutorial, find free FTP is very strenuous. I also got a poison, restore a backup, and now...