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博狗集团bodoggroup:linux下adsl拔号与共享上网



多台电脑经由过程ADSL同时上网,假如有路由,那就太简单了。然则,假如没路由只有互换机怎么办呢?一样平常有两种措施。

1、用双网卡(一个接内网,一个接外网)的机械装代理办事器软件(windows下有winGet等)来完成,博狗集团bodoggroup但这种措施要两块网卡(挥霍),同时还要装代理软件(烦,而且还会被打盗版)。

2、经由过程共享拔号连接来办理,这种措施很简单且不必要其它的软件。

对付windows下的第二种措施的实现网上有很文章且很简单,在此不作阐述。

下面就我在linux(在centOS4.4,rhel as 4,fc5下测试经由过程)下若何经由过程adsl拔号与共享上网作一个简单的记录,盼望对新手有所赞助。

1、拔号上网

1.1拔号软件

linux下的拔号软件很多,但对照好的是rp-pppoe,一样平常linux系统会自带拔号软件,假如你没装,请自己到google去找一个来装上。

1.2拔号设置

切换为root用户,只有root才能设置设置设备摆设摆设。

$ su

Password:

# /sbin/adsl-setup

按提示设置用户名、密码、DNS、及其它相关信息,下面是我的参考设置设置设备摆设摆设:

Welcome to the ADSL client setup.First, I will run some checks on

your system to make sure the PPPoE client is installed properly...

The following DSL config was found on your system:

Device:Name:

ppp0DSLppp0

Please enter the device if you want to configure the present DSL config

(default ppp0) or enter 'n' if you want to create a new one:

LOGIN NAME

Enter your Login Name (default xyn0699647):

INTERFACE

Enter the Ethernet interface connected to the ADSL modem

For Solaris, this is likely to be something like /dev/hme0.

For Linux, it will be ethX, where 'X' is a number.

(default eth0):

Do you want the link to come up on demand, or stay up continuously?

If you want it to come up on demand, enter the idle time in seconds

after which the link should be dropped.If you want the link to

stay up permanently, enter 'no' (two letters, lower-case.)

NOTE: Demand-activated links do not interact well with dynamic IP

addresses.You may have some problems with demand-activated links.

Enter the demand value (default no):

DNS

Please enter the IP address of your ISP's primary DNS server.

If your ISP claims that 'the server will provide dynamic DNS addresses',

enter 'server' (all lower-case) here.

If you just press enter, I will assume you know what you are

doing and not modify your DNS setup.

Enter the DNS information here:

PASSWORD

Please enter your Password:

Please re-enter your Password:

USERCTRL

Please enter 'yes' (two letters, lower-case.) if you want to allow

normal user to start or stop DSL connection (default yes):

FIREWALLING

Please choose the firewall rules to use.Note that these rules are

very basic.You are strongly encouraged to use a more sophisticated

firewall setup; however, these will provide basic security.If you

are running any servers on your machine, you must choose 'NONE' and

set up firewalling yourself.Otherwise, the firewall rules will deny

access to all standard servers like Web, e-mail, ftp, etc.If you

are using SSH, the rules will block outgoing SSH connections which

allocate a privileged source port.

The firewall choices are:

0 - NONE: This script will not set any firewall rules.You are responsible

for ensuring the security of your machine.You are STRONGLY

recommended to use some kind of firewall rules.

1 - STANDALONE: Appropriate for a basic stand-alone web-surfing workstation

2 - MASQUERADE: Appropriate for a machine acting as an Internet gateway

for a LAN

Choose a type of firewall (0-2):

Please enter a number from 0 to 2

The firewall choices are:

0 - NONE: This script will not set any f博狗集团bodoggroupirewall rules.You are responsible

for ensuring the security of your machine.You are STRONGLY

recommended to use some kind of firewall rules.

1 - STANDALONE: Appropriate for a basic stand-alone web-surfing workstation

2 - MASQUERADE: Appropriate for a machine acting as an Internet gateway

for a LAN

Choose a type of firewall (0-2): 0

Start this connection at boot time

Do you want to start this connection at boot time?

Please enter no or yes (default no):

** Summary of what you entered **

Ethernet Interface: eth0

User name:xyn0699647

Activate-on-demand: No

DNS:Do not adjust

Firewalling:NONE

User Control:yes

Accept these settings and adjust configuration files (y/n)? y

Adjusting /etc/sysconfig/network-scripts/ifcfg-ppp0

Adjusting /etc/ppp/chap-secrets and /etc/ppp/pap-secrets

(But first backing it up to /etc/ppp/chap-secrets.bak)

(But first backing it up to /etc/ppp/pap-secrets.bak)

Congratulations, it should be all set up!

Type '/sbin/ifup ppp0' to bring up yo博狗集团bodoggroupur xDSL link and '/sbin/ifdown ppp0'

to bring it down.

Type '/sbin/adsl-status /etc/sysconfig/network-scripts/ifcfg-ppp0'

to see the link status.

1.3拔号连接与断开

输入 '/sbin/ifup ppp0' 进行拔号连接戓'/sbin/ifdown ppp0'断开赴号连接。

至此,假如统统正常,你就可以正常网上冲浪!

2、共享上网

经由过程上面的设置,你只能自己上网,要想其它电脑共享linux的连接上网,必要作如下的设置。

LINUX收集设置:

内网IP:192.168.0.1

子网掩码:255.255.255.0

网关:192.168.0.1

DNS:根据各地的收集办事商不合,云南昆明的是 202.98.160.68

注:要使设置生效,请先竣事网卡,然后再激活。

其它的机械的设置只要包管与linux机械在一个网段并且网关设置为192.168.0.1就可以了,如:

192.168.0.2

255.255.255.0

192.168.0.1

DNS和博狗集团bodoggroup主机一样。

用你爱好的编辑器(如vi,gedit等)打开LINUX主机的/etc/rc.d/rc.local

在着末补上如下内容:

echo "1" > /proc/sys/net/ipv4/ip_forward

/sbin/ modprobe ip_nat_ftp

/sbin/ modprobe ip_conntrack

/sbin/ modprobe ip_conntrack_ftp

/sbin/ modprobe ip_conntrack_irc

/sbin/iptables -t nat -A POSTROUTING -o ppp0 -s 192.168.0.1/24 -j MASQUERADE

运行一下rc.local

/etc/rc.d/rc博狗集团bodoggroup.local

从新拔号,这样linux下的共享连接就设置OK了!

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