authentication_basic works when the page is behind an Apache-style Basic Authentication scheme. These are the pages where you get a dialog box asking for your username and password. It sounds like the authentication on your page isn't the same ("...entering password and login on the main page"). You'll need to work out how the site handles authentication and write some LWP requests that mimic those methods.

--
<http://www.dave.org.uk>

"The first rule of Perl club is you don't talk about Perl club."

In reply to Re: Downloading a web page from a secure site by davorg
in thread Downloading a web page from a secure site by Anonymous Monk

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