How to successfully use apt-Get install (set by proxy) of ubuntu on the Enterprise Network)

When the proxy server requires ID & PWD
Apt-Get will fail,

The main reason is that AGT cannot inject ID & PWD. In this case, you can install cntlm (another Proxy Server ), set the ID/pwd required by the enterprise network to NTLM, while Ubuntu sets cntlm as the proxy server, and NTLM is a proxy that passes through the enterprise network, at this time, cntlm will automatically provide the ID/pwd to the enterprise's network proxy to solve this problem.

Exam: http://blog.csdn.net/sdustliyang/article/details/7034974