[CentOS] Yum showing error

Fri Apr 25 07:17:08 UTC 2008
Ray Van Dolson <rayvd at bludgeon.org>

On Fri, Apr 25, 2008 at 12:35:26PM +0530, JohnsonKoilraj wrote:
> Hi
>      I am using centos 5. yum saying following error..
> [root at zeus Desktop]# yum grouplist
> Loading "installonlyn" plugin
> Setting up Group Process
> Setting up repositories
> Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=5&arch=i386
> &repo=os error was
> [Errno 14] HTTP Error 407: Proxy Authentication Required
> Error: Cannot find a valid baseurl for repo: base
> my system is behind corporate filter. Is there any where to use yum. help me
> out in this. in some forum it says we need NTLM to handle this...
> by
> john

Sounds like you may need to do some proxy authentication.  Do a man
yum.conf and search for "proxy" and you should see a few parameters
that might help you out.  Throw these in /etc/yum.conf.