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I have installed and configured cntlm on a fresh Ubuntu 12.04 64-bit build (running in VirtualBox).

The Network Proxy setting is pointing to cntlm (localhost:3128) for both HTTP and HTTPS proxies.

Through Firefox, http URLs work, but https URLs are perpetually stuck trying to connect.

What's the deal?

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do you mind sharing the conf file (minus the internal ip addresses) – ali haider Apr 11 '14 at 20:50
up vote 0 down vote accepted

I don't think you can use the same port for both HTTP and HTTPS. Try changing HTTPS to a different port in Firefox and your cntlm configuration file.

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