在Fedora8下，使用拨号上网不是一件轻松的事，不过如果你愿意手动配置的话，这些也不是一件特别麻烦的事情。下面是我在Fedora 7/8 都尝试过的方法，比较方便。因为Fedora提供了配置工具来设置拨号上网的参数。我们这里要使用的工具是pppoe-setup, pppoe-connect, pppoe-stop.
但是在使用上述工具你必须具备超级用户的权限，否则是无法完成本文介绍的方法。
pppoe-setup: 设置拨号参数，使用一次足矣（假设你比较幸运的话）
pppoe-connect: 每次拨号时运行此工具，既可以完成拨号上网
pppoe-stop: 每次断网时，可以运行此工具，拆除同网络供应商的连接。
在本文中，绿色的部分均为手动输入的内容。
首先，使自己成为根用户。
[work@localhost ~]$ su
Password:
然后运行pppoe-setu命令。该命令位于/sbin/ （在/usr/sbin/ 下面也有一个同样的命令，这是一个符号连接到/sbin/的同名）
[root@localhost work]# /sbin/pppoe-setup
然后你会看到pppoe-setup会输出如下的提示。
Welcome to the PPPoE client setup. First, I will run some checks on
your system to make sure the PPPoE client is installed properly...
LOGIN NAME
现在它提示你输入你在ISP所用的用户名（也叫做帐号）。
Enter your Login Name (default work): 1002999
然后你会看到如下提示，这时他会提示你输入使用连接的以太网接口，不需要输入任何内容，默认值即可。
INTERFACE
Enter the Ethernet interface connected to the PPPoE 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):
现在系统要求询问你是否希望在没有联网的情况下，系统是否在空闲一段时间后，自动切断同网络的连接。我不喜欢这样，我希望在不用的时候，自己手动断掉连接。于是选择默认值，直接输入回车。
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):
接下来，要求你输入如何设置DNS参数，我选择的是输入：server。
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: server
现在，要求你输入对应于帐户的密码（这有些类似于你在银行帐户的密码一样，这些参数可以从你的互联网服务提供商得到）,系统会让你输入两次密码确认。
PASSWORD
Please enter your Password: xxxxxx
Please re-enter your Password: xxxxxx
对于下面的提问，你可以不予理会，使用系统的默认参数即可。
USERCTRL
Please enter 'yes' (three letters, lower-case.) if you want to allow
normal user to start or stop DSL connection (default yes):
下面要求你输入防火墙的选择，我选择了没有使用防火墙。
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): 0
现在它要求你确定是否在系统启动时自动去拨号，一般来讲，这是一种浪费，所以我们选择输入默认值，直接输入回车即可
Start this connection at boot time
Do you want to start this connection at boot time?
Please enter no or yes (default no):
现在，系统开始总结你设置的参数。要求你确认，此时，你可以输入一个小y来确认。
** Summary of what you entered **
Ethernet Interface: eth0
User name: *sunzhou_110
Activate-on-demand: No
DNS addresses: Supplied by ISP's server
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)
好了，当你看到这句话表明你的参数设置结束了。
Congratulations, it should be all set up!
Type '/sbin/ifup ppp0' to bring up your xDSL link and '/sbin/ifdown ppp0'
to bring it down.
Type '/sbin/pppoe-status /etc/sysconfig/network-scripts/ifcfg-ppp0'
to see the link status.
但是，此时你还无法联网，你必须手动建立连接， 此时需要运行pppoe-connect命令。如果你看到了下面的绿色输出表明你可以在网上冲浪了。 ：）
[root@localhost work]# /sbin/pppoe-connect
/sbin/pppoe-connect: line 285: ip: command not found
/sbin/pppoe-connect: line 357: ip: command not found
Using interface ppp0
Connect: ppp0 <--> /dev/pts/1
Remote message: Authentication success,Welcome!
PAP authentication succeeded
local IP address 222.62.108.148
remote IP address 222.62.104.1
primary DNS address 211.98.2.4
secondary DNS address 61.233.9.9
此时你可以运行下面的命令，如果看到域名被正确解析且有回应，则一切OK
[work@localhost ~]$ ping www.kernel.org
PING pub.kernel.org (204.152.191.37) 56(84) bytes of data.
64 bytes from pub2.kernel.org (204.152.191.37): icmp_seq=1 ttl=48 time=311 ms
64 bytes from pub2.kernel.org (204.152.191.37): icmp_seq=2 ttl=48 time=318 ms
64 bytes from pub2.kernel.org (204.152.191.37): icmp_seq=3 ttl=48 time=327 ms
最后，如果在网上玩够了，则需要断掉连接，可以运行下面的命令
[root@localhost ~]# /sbin/pppoe-stop
Terminating on signal 15
Connect time 0.6 minutes.
Sent 2558 byte
s, received 2166 bytes.
cat: /var/run/pppoe-adsl.pid.start: No such file or directory
pppoe: read (asyncReadFromPPP): Session 5001: Input/output error
如果你看到了最后一行的错误报告，不予理会它。怎么样，在Fedora上进行网上冲浪也不是这么麻烦吧.
但是在使用上述工具你必须具备超级用户的权限，否则是无法完成本文介绍的方法。
pppoe-setup: 设置拨号参数，使用一次足矣（假设你比较幸运的话）
pppoe-connect: 每次拨号时运行此工具，既可以完成拨号上网
pppoe-stop: 每次断网时，可以运行此工具，拆除同网络供应商的连接。
在本文中，绿色的部分均为手动输入的内容。
首先，使自己成为根用户。
[work@localhost ~]$ su
Password:
然后运行pppoe-setu命令。该命令位于/sbin/ （在/usr/sbin/ 下面也有一个同样的命令，这是一个符号连接到/sbin/的同名）
[root@localhost work]# /sbin/pppoe-setup
然后你会看到pppoe-setup会输出如下的提示。
Welcome to the PPPoE client setup. First, I will run some checks on
your system to make sure the PPPoE client is installed properly...
LOGIN NAME
现在它提示你输入你在ISP所用的用户名（也叫做帐号）。
Enter your Login Name (default work): 1002999
然后你会看到如下提示，这时他会提示你输入使用连接的以太网接口，不需要输入任何内容，默认值即可。
INTERFACE
Enter the Ethernet interface connected to the PPPoE 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):
现在系统要求询问你是否希望在没有联网的情况下，系统是否在空闲一段时间后，自动切断同网络的连接。我不喜欢这样，我希望在不用的时候，自己手动断掉连接。于是选择默认值，直接输入回车。
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):
接下来，要求你输入如何设置DNS参数，我选择的是输入：server。
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: server
现在，要求你输入对应于帐户的密码（这有些类似于你在银行帐户的密码一样，这些参数可以从你的互联网服务提供商得到）,系统会让你输入两次密码确认。
PASSWORD
Please enter your Password: xxxxxx
Please re-enter your Password: xxxxxx
对于下面的提问，你可以不予理会，使用系统的默认参数即可。
USERCTRL
Please enter 'yes' (three letters, lower-case.) if you want to allow
normal user to start or stop DSL connection (default yes):
下面要求你输入防火墙的选择，我选择了没有使用防火墙。
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): 0
现在它要求你确定是否在系统启动时自动去拨号，一般来讲，这是一种浪费，所以我们选择输入默认值，直接输入回车即可
Start this connection at boot time
Do you want to start this connection at boot time?
Please enter no or yes (default no):
现在，系统开始总结你设置的参数。要求你确认，此时，你可以输入一个小y来确认。
** Summary of what you entered **
Ethernet Interface: eth0
User name: *sunzhou_110
Activate-on-demand: No
DNS addresses: Supplied by ISP's server
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)
好了，当你看到这句话表明你的参数设置结束了。
Congratulations, it should be all set up!
Type '/sbin/ifup ppp0' to bring up your xDSL link and '/sbin/ifdown ppp0'
to bring it down.
Type '/sbin/pppoe-status /etc/sysconfig/network-scripts/ifcfg-ppp0'
to see the link status.
但是，此时你还无法联网，你必须手动建立连接， 此时需要运行pppoe-connect命令。如果你看到了下面的绿色输出表明你可以在网上冲浪了。 ：）
[root@localhost work]# /sbin/pppoe-connect
/sbin/pppoe-connect: line 285: ip: command not found
/sbin/pppoe-connect: line 357: ip: command not found
Using interface ppp0
Connect: ppp0 <--> /dev/pts/1
Remote message: Authentication success,Welcome!
PAP authentication succeeded
local IP address 222.62.108.148
remote IP address 222.62.104.1
primary DNS address 211.98.2.4
secondary DNS address 61.233.9.9
此时你可以运行下面的命令，如果看到域名被正确解析且有回应，则一切OK
[work@localhost ~]$ ping www.kernel.org
PING pub.kernel.org (204.152.191.37) 56(84) bytes of data.
64 bytes from pub2.kernel.org (204.152.191.37): icmp_seq=1 ttl=48 time=311 ms
64 bytes from pub2.kernel.org (204.152.191.37): icmp_seq=2 ttl=48 time=318 ms
64 bytes from pub2.kernel.org (204.152.191.37): icmp_seq=3 ttl=48 time=327 ms
最后，如果在网上玩够了，则需要断掉连接，可以运行下面的命令
[root@localhost ~]# /sbin/pppoe-stop
Terminating on signal 15
Connect time 0.6 minutes.
Sent 2558 byte
s, received 2166 bytes.
cat: /var/run/pppoe-adsl.pid.start: No such file or directory
pppoe: read (asyncReadFromPPP): Session 5001: Input/output error
如果你看到了最后一行的错误报告，不予理会它。怎么样，在Fedora上进行网上冲浪也不是这么麻烦吧.
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