1、配置Linux下的ADSL
1.1、在命令行中進行配置。
用root帳號登陸console，在提示符中輸入：
#adsl-setup。（現在貌似是pppoe-setup)
該命令是配置ADSL的信息。下面是輸入該命令以后出現的提問，需要你來回答一些問題。
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:
ppp0
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: ppp0
Enter your PPPoE user name :
輸入ADSL帳號，按回車。
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 ethn, where 'n' is a number.
(default eth0):
輸入ADSL連接網卡的名稱。在Linux中網卡的編號默認是eth0,eth1,eth2......，根據你的實際情況輸入。如果你的系統中只有一塊
網卡，請輸入eth0然后回車。
Please enter 'yes' (two letters, lower-case.) if you want to allow
normal user to start or stop DSL connection (default yes):
是否允許普通用戶共享ADSL，輸入yes。
Enter the demand value (default no):
輸入 no，然后回車。
Enter the DNS information here:
你可以輸入你知道的當地的DNS的名稱，當然，你也可以簡單的就直接輸入 server。
Please enter your PPPoE password:
輸入ADSL帳號的密碼 ，回車。
Please re-enter your Password:
再次輸入密碼，回車。
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):
Start this connection at boot time
Do you want to start this connection at boot time?
Please enter no or yes (default no):
是否允許開機運行，這里輸入no。
Choose a type of firewall (0-2):
輸入 0 ，不使用防火墻，回車。
** Summary of what you entered **
Ethernet Interface: eth0
User name: nicry
Activate-on-demand: No
Primary DNS: 61.139.2.69
Secondary
DNS: 61.139.2.69
Firewalling: STANDALONE
User Control: yes
Accept these settings and adjust configuration files (y/n)?
你是否確定信息的正確性，如果確定，按y回車，如果不確定就俺你回車重新輸入。
好了，在命令行中就完成了ADSL的配置了。
1.2、在圖形界面中使用系統的配置工具完成配置工作
注意：該方法只能在redhat中實現。
用root帳號登陸系統，運行
redhat-config-network
或者單擊K或者大腳板（看你是在kde下還是gnome下。這相當于MS中的開始。）選擇系統設置，選擇網絡。
選擇"xDSL連接"，輸入adsl連接的用戶名，密碼。這個方式很簡單，就好像是在xp中配置ADSL一樣，看提示就可以操作了。啊哈～
配置好了的配置文件是存放在
/etc/ppp/pppoe.conf
2、如何在Linux中使用ADSL
要上網的時候請在console中執行
adsl-start
adsl-stop
如果要檢查當前adsl的狀態請輸入
adsl-status
好了，現在你就可以方便的使用Linux中的ADSL進行上網了，希望大家喜歡