在SuSE8.0下如何实现自动拨号上网的方法

　　看到YaST里面有DSL这一项，于是我就设置了，启动机器的时候看到有加载dsl0这一条，但是为何我不能自动联接呢？而且如果eth0设置为DHCP的话，每次检测网卡都要花一点时间，很不爽。于是我就将它设了一个IP，也就是192.168.1.1这样的。但我拨号的时候仍然不通，很奇怪。于是就在YaST的帮助里查找ADSL的帮助，经过一番摸索之后，终于能上网了。于是想写下来与大家分享，高手们别嘲笑小弟的潜薄，只是，我想多少会有人需要这个东西。
　　我的输入法还是靠大家才搞定的，否则也不能在这里写中文帖子了。
　　方法如下：
　　需要修改3个文件的内容，它们都在/etc/ppp目录下面，分别是：
　　(1) chap-secrets，
　　# Secrets for authentication using CHAP
　　# client server secret IP addresses
　　
　　# OUTBOUND CONNECTIONS
　　# Here you should add your PPP Login and PPP password to connect to your
　　# provider via pap. The * means that the entry(login and passoword may be
　　# used for ANY host you connect to.
　　# Thus you do not have to worry about the foreign machine name. Just
　　# replace password with your password.
　　#hostname * password
　　
　　# PREDIFINED CONNECTIONS
　　# These are user and password entries for publically accessible call-by-call
　　# Internet providers in Germany. If they confict with your config, remove them.
　　# READ_IN_CALLBYCALL_SECRETS
　　
　　# INBOUND CONNECTIONS
　　#client hostname 192.168.1.1 (我的静态 IP 地址找个，你设的什么就是什么，不用抄我的。但是如果你的Local中有机器用了找个地址，那就不能用来这里了。)
　　[email protected](你的帐户) * xxxxxxx(你的密码) 记住中间的 * 可不要给删除了。
　　
　　pap-secrets 中的设置跟上面完全相同。我就省略了。
　　----------------------------------------------------------------------------------
　　(2)options 找个文件的设置非常重要。以下是全文，还有一小部分都是注解，我就不写上来了。
　　
　　# /etc/ppp/options
　　#
　　# Not every option is listed here, see man pppd for more details.
　　# This file is read by the pppd,
　　# it is an error when it is not present.
　　#
　　# use the following command to see the active options:
　　#
　　# grep -v ^# /etc/ppp/options | grep -v ^$
　　#
　　
　　# ------
　　# The name of this server. Often, the FQDN is used here.
　　#name
　　
　　#===================================================================
　　user [email protected] ( 注意前面的user，不要漏掉了，后门接着的就是你前面用的那个。)
　　#===================================================================
　　
　　# Enforce the use of the hostname as the name of the local system for
　　# authentication purposes (overrides the name option).
　　#usehostname
　　
　　# If no local IP address is given, pppd will use the first IP address
　　# that belongs to the local hostname. If "noipdefault" is given, this
　　# is disabled and the peer will have to supply an IP address.
　　#noipdefault
　　
　　# With this option, pppd will accept the peer's idea of our local IP
　　# address, even if the local IP address was specified in an option.
　　#ipcp-accept-local
　　
　　# With this option, pppd will accept the peer's idea of its (remote) IP
　　# address, even if the remote IP address was specified in an option.
　　#ipcp-accept-remote
　　
　　# Run the executable or shell command specified after pppd has terminated
　　# the link. This script could, for example, issue commands to the modem
　　# to cause it to hang up if hardware modem control signals were not
　　# available.
　　# If mgetty is running, it will reset the modem anyway. So there is no need
　　# to do it here.
　　#disconnect "chat -- \d+++\d\c OK ath0 OK"
　　
　　# Increase debugging level (same as -d). The debug output is written
　　# to syslog LOG_LOCAL2.
　　debug
　　
　　# Enable debugging code in the kernel-level PPP driver. The argument n
　　# is a number which is the sum of the following values: 1 to enable
　　# general debug messages, 2 to request that the contents of received
　　# packets be printed, and 4 to request that the contents of transmitted
　　# packets be printed.
　　#kdebug n
　　
　　# noauth means do not require the peer to authenticate itself, this must
　　# be set if you want to use pppd to connect to the internet. In this case
　　# *you* must authenicate yourself to the peer(internet provider), so do
　　# not disable this setting unless you are the dial-in server which where
　　# the peer has to autenticate to.
　　noauth
　　
　　# Use hardware flow control (i.e. RTS/CTS) to control the flow of data
　　# on the serial port.
　　crtscts
　　
　　# Specifies that pppd should use a UUCP-style lock on the serial device
　　# to ensure exclusive access to the device.
　　lock
　　
　　# Use the modem control lines.(is default)
　　#modem （将它注释掉，系统默认是打开的）
　　# The opposite: local
　　#
　　# Description:
　　# Don't use the modem control lines. With this
　　# option, pppd will ignore the state of the CD (Car??
　　# rier Detect) signal from the modem and will not
　　# change the state of the DTR (Data Terminal Ready)
　　# signal.
　　#
　　# You need to disable modem and enable local if you want to connect
　　# to anoter system without using a modem:
　　local （加上这个）
　　
　　# async character map -- 32-bit hex; each bit is a character
　　# that needs to be escaped for pppd to receive it. 0x00000001
　　# represents '\x01', and 0x80000000 represents '\x1f'.
　　# To allow pppd to work over a rlogin/telnet connection, ou should escape
　　# XON (^Q), XOFF (^S) and ^]: (The peer should use "escape ff".)
　　#asyncmap 200a0000
　　asyncmap 0
　　
　　# needed for some ISDN Terminaladaters, namely ELSA, those seem to have
　　# problems with asyncmap negotiation, so you can turn off this procedure
　　# in case your ISDN box has trouble with it, by enabling this option.
　　# You have to disable the asyncmap option to be sure to have it
　　# active. If you use wvdial, set the ISDN parameter in /etc/wvdial.conf
　　# instead.
　　#default-asyncmap
　　
　　# Set the MRU [Maximum Receive Unit] value to for negotiation. pppd
　　# will ask the peer to send packets of no more than bytes. The
　　# minimum MRU value is 128. The default MRU value is 1500. A value of
　　# 296 is recommended for slow links (40 bytes for TCP/IP header + 256
　　# bytes of data). The value 1492 is for DSL connections (PPP Default -
　　# PPPoE Header: 1500 - 8 = 1492)
　　mru 1492 （要加上找个）
　　
　　# Set the MTU [Maximum Transmit Unit] value to . Unless the peer
　　# requests a smaller value via MRU negotiation, pppd will request that
　　# the kernel networking code send data packets of no more than n bytes
　　# through the PPP network interface. The value 1492 is for DSL connections
　　# (PPP Default - PPPoE Header: 1500 - 8 = 1492)
　　mtu 1492 （找个也要加上）
　　
　　# Set the interface netmask to , a 32 bit netmask in "decimal dot"
　　# notation (e.g. 255.255.255.0).
　　#netmask 255.255.255.0
　　
　　# Don't fork to become a background process (otherwise pppd will do so
　　# if a serial device is specified).
　　nodetach
　　
　　# If this option is given, pppd will send an LCP echo-request frame to
　　# the peer every n seconds. Under Linux, the echo-request is sent when
　　# no packets have been received from the peer for n seconds. Normally
　　# the peer should respond to the echo-request by sending an echo-reply.
　　# This option can be used with the lcp-echo-failure option to detect
　　# that the peer is no longer connected.
　　lcp-echo-interval 30