RH9.0 安装与启动telnet服务步骤

RH9.0 安装与启动telnet服务步骤: by coding

    telnet分为两个部分

一个为telnet 客户端

一个为telnet 服务端

先判断系统是否已经安装telnet客户端及服务端使用

           rpm -qa | grep "telnet"

telnet客户端rpm包名为: telnet-0.17-25.386.rpm (在RH的第一张安装光盘里)

telnet服务端rpm包名为: telnet-server-0.17-25.i386.rpm (在RH的第三张光盘里)

          # rpm -ivh telnet-0.17-25.386.rpm 提示安装成功

         # rpm -ivh telnet-server-0.17-25.i386.rpm 提示安装成功启动服务:

当telnet-server安装成功后,在/etc/xinetd.d目录下会生成一个telnet的文本文件,内容如下:

         # default: on n # 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 = yes }

将上文件中 disable=yes改为 disable = no;

保存退出

           # chkconfig --list

xinetd based services:

chargen-udp: off

rsync: off

chargen: off

daytime-udp: off

daytime: off

echo-udp: off

echo: off

services: off

servers: off

time-udp: off

time: off

sgi_fam: on

telnet: on

telnet no 说明配置文件修改成功因为是xinetd守护的服务所以需要以下方法启动:

重起xinetd

# service xinetd restart

# nmap 127.0.0.1 Starting nmap V. 3.00 ( www.insecure.org/nmap/ ) Interesting ports on localhost.localdomain (127.0.0.1): (The 1595 ports scanned but not shown below are in state: closed) Port State Service 22/tcp open ssh 23/tcp open telnet 25/tcp open smtp 111/tcp open sunrpc 1024/tcp open kdm telnet

服务启动成功卸载:

将 服务停止;

# rpm -ev telnet-server-0.17-25.i386.rpm

提示卸载成功卸载telnet-server时会提示将telnet改名为telnet.rpmsave保存设置. 完