Go through this link http://board.issociate.de/thread/267090/How-to-get-CPAN-to-use-Http-Proxy.html

Also you can use export command to provide your proxy. Next thing is your username/password empty,i.e, do you just press enter for them? If yes then use export PERL_MM_USE_DEFAULT=1. It will press enter for you,i.e, takes all default inputs to questions in cpan. Now if you have username and password for proxy use steps in link provided above

In reply to Re: CPAN via Proxy and no auth by rahulruns
in thread CPAN via Proxy and no auth by chefchanyu

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