Basic_CentOS下在线下载安装并启用Telnet服务

CentOS下在线下载安装并启用Telnet服务

1、查看有没有安装telnet服务

rpm –qa|grep telnet

没有则找安装包进行安装。如果有安装光盘，在安装光盘中找到相应的安装包进行安装。这里直接通过网络安装

2、通过yum install安装Telnet程序

[root@bogon xinetd.d]# yum list telnet-server

Loading "installonlyn" plugin

Setting up repositories

Reading repository metadata in from local files

Available Packages

telnet-server.i386 1:0.17-39.el5 base

[root@bogon xinetd.d]# yum install telnet-server

Loading "installonlyn" plugin

Setting up Install Process

Setting up repositories

Reading repository metadata in from local files

Parsing package install arguments

Resolving Dependencies

--> Populating transaction set with selected packages. Please wait.

---> Downloading header for telnet-server to pack into transaction set.

telnet-server-0.17-39.el5 100% |=========================| 8.4 kB 00:01

---> Package telnet-server.i386 1:0.17-39.el5 set to be updated

--> Running transaction check

Dependencies Resolved

=============================================================================

Package Arch Version Repository Size

=============================================================================

Installing:

telnet-server i386 1:0.17-39.el5 base 35 k

Transaction Summary

=============================================================================

Install 1 Package(s)

Update 0 Package(s)

Remove 0 Package(s)

Total download size: 35 k

Is this ok [y/N]: y 选程Yes

Downloading Packages:

(1/1): telnet-server-0.17 100% |=========================| 24 kB 00:31
http://ftp.stu.edu.tw/Linux/CentOS/5.2/os/i386/CentOS/telnet-server-0.17-39.el5.i386.rpm: [Errno 4] Socket Error: timed out

Trying other mirror.
http://centos.cs.nctu.edu.tw/5.2/os/i386/CentOS/telnet-server-0.17-39.el5.i386.rpm: [Errno 4] IOError: <urlopen error (104, 'Connection reset by peer')>

Trying other mirror.

(1/1): telnet-server-0.17 100% |=========================| 35 kB 00:00

Running Transaction Test

Finished Transaction Test

Transaction Test Succeeded

Running Transaction

Installing: telnet-server ######################### [1/1]

Installed: telnet-server.i386 1:0.17-39.el5

Complete!

3、修改配置文件vi /etc/xinetd.d/telnet

[root@bogon xinetd.d]# more telnet

# 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 = yes

}

将disable项由yes改成no。

4、重启服务生效

/etc/init.d/xinetd restart

#Linux