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真的是让人心寒和沮丧。
从FEDORA开始到现在的UBUNTU
从YUM到现在的APT
不管我在网上发出什么样的求助。都是没人能说上两句。即使这样，也只是帮忙灌一下水


公司是用代理上的网，通过ISA访问的。
我们知道无论是FEDORA或是UBUNTU，通过YUM或是APT下载软件或是更新系统，是很方便的一件事。
我在家里是用宽带上的，UBUNTU一装上去，就可以 SUDO APT-GET UPDATE
但是在公司呢，我把网络代理设好了。把新立得的代理设好了，FIREFOX能访问外网了，也能访问公司的文件服务器了
我源也更新了，当我UPDATE的时候。
最多就是“域名无法解析”
一大堆问题啊！
我CAT /ETC/NETWORK/INTERFACES里面的正常
我CAT /ETC/RESOLV.CONF

我再运行一下NSLOOKUP。。能找到DNS。。就是最后还有一句SERVER CAN‘T FIND。。。。
目前只能说是DNS解析的问题了。但是怎么做呢？？？？
我是一个菜鸟，自己刚学LINUX也只是短暂的一点点时间。
希望各位高手能帮忙！！

sources.list文件里直接写IP地址+路径试试

不行的话
编辑/etc/hosts文件 加上源的IP和域名

楼上思路独特，应该是个好办法

无法下载 http://debian.ustc.edu.cn/ubuntu/dists/ ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://debian.ustc.edu.cn/ubuntu/dists/ ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://debian.ustc.edu.cn/ubuntu/dists/ ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://debian.ustc.edu.cn/ubuntu/dists/ ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... ackages.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.cn99.com/ubuntu/dists/fei ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.cn99.com/ubuntu/dists/fei ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.cn99.com/ubuntu/dists/fei ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.cn99.com/ubuntu/dists/fei ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.cn99.com/ubuntu/dists/fei ... ackages.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.cn99.com/ubuntu/dists/fei ... ackages.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.cn99.com/ubuntu/dists/fei ... ackages.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.cn99.com/ubuntu/dists/fei ... ackages.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.cn99.com/ubuntu/dists/fei ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.cn99.com/ubuntu/dists/fei ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... ackages.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... ackages.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... ackages.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... ackages.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.cn99.com/ubuntu/dists/fei ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.cn99.com/ubuntu/dists/fei ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
无法下载 http://ubuntu.csie.ntu.edu.tw/ubuntu/di ... Sources.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) [IP: 10.1.1.10 8080]
正在读取软件包列表... 完成

zhe ge zenme jiejue

看看这里吧：http://ubuntuforums.org/showthread.php?t=96802

汗...有没有翻译的，或是说一下大概的意思啊???

你在gnome的代理设置里禁止使用代理

然后/etc/ap/apt.conf里这样写
Acquire::http::Proxy "http://MYDOMAIN\MYNAME:MYPASS@MY.PROXY.COM:MYPORT"

然后在终端下运行apt-get update就可以了
我之前也是不能在终端下运行，把GNOME设置里的代理禁止使用，一切正常了！

都试了。。。没什么用阿
很可能跟ISA认证有关