Question

我使用debootstrap在文件夹中设置了chroot jail。 Inisde这个监狱，我安装了telnetd。但是当我尝试从远程主机登录时，登录后就会关闭连接。

administrator@ubuntu:/$ telnet 192.168.1.100
Trying 192.168.1.100...
Connected to 192.168.1.100.
Escape character is '^]'.
Ubuntu 12.04 LTS
dchub login: trail
Password: 
Last login: Mon Sep  9 09:51:47 UTC 2013 from 192.168.1.200 on pts/3
Welcome to Ubuntu 12.04 LTS (GNU/Linux 3.9.9-1-ARCH x86_64)

 * Documentation:  https://help.ubuntu.com/
Cannot execute /bin/bash: Resource temporarily unavailable
Connection closed by foreign host.
administrator@ubuntu:/$

我已经安装了/ proc和/ dev / pts。

Answer 1

我终于弄明白了问题是什么我的主机系统将zsh作为默认shell，我用它进入chroot jail并启动telnet服务器，它将bash作为其默认shell。所以，当我使用bash进入chroot监狱并启动telnet服务器时，它起作用了！每次登录时仍会向我显示此错误消息，但其他一切正常。

-bash: fork: retry: No child processes
-bash: fork: retry: No child processes
-bash: fork: retry: No child processes
-bash: fork: retry: No child processes
-bash: fork: Resource temporarily unavailable

在chroot环境中telnet

1 个答案: