Linux安装telnet服务

1.安装软件

sudo apt-get install xinetd telnetd

2.新建/etc/inetd.conf：

telnet stream tcp nowait telnetd /usr/sbin/tcpd /usr/sbin/in.telnetd

3.编辑/etc/xinetd.conf文件：

# Simple configuration file for xinetd
#
# Some defaults, and include /etc/xinetd.d/
defaults
{
# Please note that you need a log_type line to be able to use log_on_success
# and log_on_failure. The default is the following :
# log_type = SYSLOG daemon info
　　
instances = 60
log_type = SYSLOG authpriv
log_on_success = HOST PID
log_on_failure = HOST
cps = 25 30
}
includedir /etc/xinetd.d

4.新建文件/etc/xinetd.d/telnet：

# default: on

# description: The telnet server serves telnet sessions; it uses

# unencrypted username/password pairs for   authentication.
service telnet
{
disable = no
flags = REUSE
socket_type = stream
wait = no
user = root
server = /usr/sbin/in.telnetd
log_on_failure += USERID
}

5.重启网络服务

sudo /etc/init.d/xinetd restart

6.此时仅可以使用非root用户登陆，如果要使用root登录，执行：

mv /etc/securetty /etc/securetty.bak