本文用注視加命令行提示的方式從安裝實例的角度為初學Linux的朋友闡述了Red Hat中用ADSL撥號上網的詳細過程，希望可以給遇到此困難的朋友以幫助。 首先應該確定您是否安裝了pppoe的應用程序。如果確實已經安裝了，可以在終端用 adsl－setup命令啟動adsl配置，提示過程為英文。大概為: [root@localhost root]# adsl-setup 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 DSLppp0 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 //默認為ppp0 LOGIN NAME Enter your Login Name (default SJ00411210A1): anthrax //這裡用你自己的用戶名代替我的anthrax:) 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): eth0 //默認網卡設備為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): no //這裡使用默認no就可以了，斷線後不自動撥號。 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: 202.96.134.133 //主DNS地址設置，根據您的具體情況替換。 Please enter the IP address of your ISP's secondary DNS server. If you just press enter, I will assume there is only one DNS server. Enter the secondary DNS server address here: 202.96.134.133 //第二DNS地址設置。 PASSWord Please enter your Password: //這裡設置密碼，和unix規則一樣，密碼並不回顯，因此不要認為您的鍵盤出了毛病:) Please re-enter your Password: //確認密碼 USERCTRL Please enter 'yes' (two letters, lower-case.) if you want to allow normal user to start or stop DSL connection (default yes): yes //是否允許普通用戶共享ADSL。 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): 1 //配置防火牆等級，根據您的需要選擇。 Start this connection at boot time Do you want to start this connection at boot time? Please enter no or yes (default no):no //是否允許開機自動加載，這裡選擇no，否則系統啟動速度太慢! ** Summary of what you entered ** Ethernet Interface: eth0 User name: anthrax Activate-on-demand: No Primary DNS: 202.96.134.133 Secondary DNS: 202.96.134.133 Firewalling: STANDALONE User Control: yes Accept these settings and adjust configuration files (y/n)? 選擇y，配置完成。您可以用 adsl－start命令啟動，可以用adsl－stop命令停止。 為了方便，可以在桌面建立一個應用程序鏈接，命令就使用adsl－start。這樣每次雙擊那個快捷圖標就可以建立adsl鏈接了，跟windows中一樣方便。 好了，現在就開始您的網絡之旅吧。(技巧:如果依據本文內容操作扔不能鏈接網絡，可以嘗試在"系統設置－>網路"中刪除當前的網卡，重新配置adsl項。)
