On Feb 9, 2012, at 10:57 AM, "C. L. Martinez" <carlopmart at gmail.com> wrote: > On Thu, Feb 9, 2012 at 4:51 PM, Giles Coochey <giles at coochey.net> wrote: >> On 2012-02-09 15:35, C. L. Martinez wrote: >>> Hello all, >>> >>> How can I configure yum to download updates when I need to >>> authenticate to a Microsoft Forefront proxy?? I have tried to >>> configure http_proxy variable as a >>> "http_proxy="http://DOMAIN\\user:passwd@proxy:port/", but it doesn't >>> works ... I have tried to set http_user and http_passwd also without >>> luck. >>> >> >> By the way, precise instructions are not too difficult to find: >> >> http://lmgtfy.com/?q=using yum with a proxy server >> >> >> -- > > Yes Giles, but my problem is with a Forefront proxy when I need to use > an AD to authenticate users ... With s squid proxy, it is easy to > configure proxy options under yum.conf ... I do yum through Forefront TMG and you need to set proxy to accept both Integrated and Basic authentication. If you can't do that because of policy/politics see if port 80 from that box's IP can have anonymous access to the centos mirrors. -Ross