[Linux] ubuntu install telnet service

ubuntu安装telnet服务

1. sudo apt-get install xinetd telnetd

sudo gedit /etc/inetd.conf并加入以下一行，假如没有发现这个文件，

自己新建立一个也是可以的.
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telnet stream tcp nowait telnetd /usr/sbin/tcpd /usr/sbin/in.telnetd

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3. sudo gedit /etc/xinetd.conf并加入以下内容：

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# 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
}

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4. sudo gedit /etc/xinetd.d/telnet并加入以下内容：

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# 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
} 

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5. 重启机器或重启网络服务 
sudo /etc/init.d/xinetd restart