1. 关于 telnet 命令的相关信息
[root@urbetter /]# telnet --help
BusyBox v1.13.3 (2009-03-25 15:48:45 CST) multi-call binary
Usage: telnet [-a] [-l USER] HOST [PORT]
Connect to telnet server
Options:
-a Automatic login with $USER variable
-l USER Automatic login as USER
2. 开发板 telnet 登录到其他提供了 telnet 服务器的主机
--- 确认开发板的 ip 地址,确认开发板能连接 Internet
ifconfig
ping 内网的 ip ; ping 外网的 ip
--- 设置路由 ip : route add default gw 192.168.1.1
--- 登录: telnet 202.112.7.137
3. 开发板设置好网络,登录 Internet
--- 设置网关 :route add default gw 192.168.1.1( 根据实际情况设定 )
--- 确认连通 Internet:ping 202.112.17.137
--- 设置域名解析服务器 :
查看你 pc 机上的 DNS 服务器的 ip 地址 202.96.128.96
vim /etc/resolv.conf 添加 nameserver 202.96.128.96
或者 rm /etc/resolv.conf ;touch /etc/resolv.conf;
echo nameserver 202.96.128.96 >> /etc/resolv.conf
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4. 开发板登录 Linux 主机
4.1Linux 主机安装 telnet 服务
sudo apt-get install xinetd telnetd
修改配置
sudo vi /etc/inetd.conf 并加入以下一行
telnet stream tcp nowait telnetd /usr/sbin/tcpd /usr/sbin/in.telnetd
4.2sudo vi /etc/xinetd.conf 并加入以下内容:
# 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
4.3sudo vi /etc/xinetd.d/telnet 并加入以下内容:
# 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. 重启机器或重启网络服务 sudo /etc/init.d/xinetd restart
6. 使用 TELNET 客户端远程登录;
ifconfig -a 显示本机地址。