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CentOS: [root@clovem ~]# yum install telnet-server -y //安装telnet服务端
[root@clovem ~]# cat /etc/xinetd.d/telnet //开启telnet的托管服务
# default: on
# description: The telnet server serves telnet sessions; it uses \
#unencrypted username/password pairs for authentication.
service telnet
{
flags= REUSE
socket_type= stream
wait= no
user= root
server= /usr/sbin/in.telnetd
log_on_failure+= USERID
disable= no //将yes改为no
}
[root@clovem ~]# service xinetd restart //重启托管服务使配置文件生效
如下操作使root用户登录生效 [root@clovem ~]# mv /etc/securetty /etc/securetty.bak 这样， root 就可以直接进入 Linux 主机了。不过，建议不要这样做。也可以在普通用户进入后，切换到root用户,拥有root的权限。 Red Hat Enterprise Linux AS release 4 需要修改：krb5-telnet [root@rawlnx ~]# cat /etc/xinetd.d/krb5-telnet
# default: off
# description: The kerberized telnet server accepts normal telnet sessions, \
# but can also use Kerberos 5 authentication.
service telnet
{
flags= REUSE
socket_type= stream
wait= no
user= root
server= /usr/kerberos/sbin/telnetd
log_on_failure+= USERID
disable= no
}
配置完成，重启xinetd 服务 solaris：将本文件的CONSOLE一行注释，直接生效 -bash-3.00# cat /etc/default/login |grep CONSOLE # If CONSOLE is set, root can only login on that device. #CONSOLE=/dev/console |
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