I can not connect to CEAN from my work - ISA server required NTLM authentication and it looks like CEAN (ibrowse actually) supports only basic authentication.
Are there any ways to solve this problem?

Hello,

To my knowledge this is not possible as the Erlang Inets module does not suport NTLM proxy. We have no plan to develop NTLM authentication module for Windows, but we would be happy to integrate the code as a contribution if someone would like to provide this code.

I know this post is slightly old but I add this just in case its useful to other folks who happen to be trying to use CEAN behind a authenticating windows (ntlm) proxy:

Forgive me if you are offended by the use of scripting languages like python, but there is a python package called ‘ntlmaps’ which you can run pretty easily on your local machine in order to proxy to your windows proxy.  Configure ntlmaps, start it up and edit your start.bat (or .sh) to set HTTP_PROXY to localhost:[port].