头晕的adsl问题

adsl上网
root@mageng-desktop:/home/mageng# pon dsl-provider
Plugin rp-pppoe.so loaded.
上面应该证明pppoe驱动已安装，自动获得ip地址。当打开浏览器输入网址时，却进不了网页，然后察看有关信息如下
root@mageng-desktop:/home/mageng# plog
Jul 9 20:15:59 mageng-desktop pppd[6840]: Connect: ppp0 <--> eth0
Jul 9 20:15:59 mageng-desktop pppd[6840]: Remote message: wrong^J
Jul 9 20:15:59 mageng-desktop pppd[6840]: PAP authentication failed
Jul 9 20:15:59 mageng-desktop pppd[6840]: Connection terminated.
Jul 9 20:16:29 mageng-desktop pppd[6840]: PPP session is 11474
Jul 9 20:16:29 mageng-desktop pppd[6840]: Using interface ppp0
Jul 9 20:16:29 mageng-desktop pppd[6840]: Connect: ppp0 <--> eth0
Jul 9 20:16:29 mageng-desktop pppd[6840]: Remote message: wrong^J
Jul 9 20:16:29 mageng-desktop pppd[6840]: PAP authentication failed
Jul 9 20:16:29 mageng-desktop pppd[6840]: Connection terminated.
root@mageng-desktop:/home/mageng# ifconfig pppo
pppo: error fetching interface information: Device not found

root@mageng-desktop:/home/mageng# ifconfig
eth0 Link encap:Ethernet HWaddr 00:30:18:A0:F1:78
inet addr:10.0.0.11 Bcast:255.255.255.255 Mask:255.0.0.0
inet6 addr: fe80::230:18ff:fea0:f178/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:76 errors:0 dropped:0 overruns:0 frame:0
TX packets:139 errors:1 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5804 (5.6 KiB) TX bytes:14842 (14.4 KiB)
Interrupt:16 Base address:0xa000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:43 errors:0 dropped:0 overruns:0 frame:0
TX packets:43 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3645 (3.5 KiB) TX bytes:3645 (3.5 KiB)

root@mageng-desktop:/home/mageng#
到底是怎么回事啊，谢谢
难道linux 还需要拨号软件吗

#tar xvfz rp-pppoe-3.2.tar.gz
解压正常
然后，进行编译和安装

root@mageng-desktop:/home/mageng# cd rp-pppoe-3.8
root@mageng-desktop:/home/mageng/rp-pppoe-3.8# ./go
Running ./configure...
checking for gcc... gcc
checking for C compiler default output file name... configure: error: C compiler cannot create executables
See `config.log' for more details.
Oops! It looks like ./configure failed.
root@mageng-desktop:/home/mageng/rp-pppoe-3.8#

设置怎么错了，请告知，谢谢

上面两个问题，已将困扰了我好几天了
请高手指教