Ubuntu 安装 Telnet

在 ubuntu 上安裝 telnet service

1.安装：

sudo apt-get install xinetd telnetd

2.修改inetd.conf：

vim /etc/inetd.conf

# 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
}

3.增加telnet需要的端口号：

vi /etc/services

如果没有telnet选项，则添加如下语句：

telnet    23/tcp

即指定其端口为23.

4.开启telnet服务：

/etc/init.d/xinetd restart

5.测试：

telnet localhost 23 // or 22

2017.3.22