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I have a HP workstation running Ubuntu 12.04. I have installed likewise and joined it to the corporate domain at my work. I have set the proxy settings in system -> network -> network proxy and applied system wide.

I can browse the web no problem however apt-get fails with an ISA authentication failure.

I have modified the /etc/apt/apt.conf file from

Acquire::http::proxy "http://proxy:port"

to

Acquire::http::proxy "http://DOMAIN\user:password@proxy:port"

but I am still getting an authentication error.

I have changed the password a few times, and used different accounts to the same affect. I also ran

sudo http_proxy=http://DOMAIN\user:password@proxy:port/ apt-get update

but the same issues occurred.

Any help would be appreciated

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closed as off-topic by Seth Jun 26 at 19:33

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This describes a problem that can't be reproduced that seemingly went away on its own or was only relevant to a very specific period of time. It's off-topic as it's unlikely to help future readers." – Seth
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2 Answers 2

See my blog here which explains how to configure CNTLM and get authenticate with Microsoft ISA Proxy .

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Seem you need to install and setup a local cntlm proxy to made auth to your, i guess, Win domain, then set as default proxy into your /etc/apt/apt.conf to use it

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