Re: proxy isa server

David Timms <[email protected]>
Newsgroups gmane.linux.rpm.yum
Message-ID <[email protected]>
[email protected] wrote:
> Hello Dave,
> I have two various behaviors......
> I am using centos 4.5 Operanting system.
> 
> If I execute the command "yum update" I obtain this message error:
> -----------
> 
> Setting up Update Process
> Setting up repositories
> Cannot find a valid baseurl for repo: update
> Error: Cannot find a valid baseurl for repo: update
About 9 months ago yum had a problem with proxies, where the client 
machine had to have working dns for the proxy to work. I know this got 
improved at the time, but I may have seen a message on the list 
indicating further problems.

Basically the yum code would dns lookup the mirrorlist/baseurl domains, 
then connect to the proxy and request the URL using the looked up 
number. At my site this wouldn't work because no machines are actually 
allowed to do  the DNS lookup. At the time I could workaround it by 
supplying the proxy address and URLs as IP numbers.

yum has a debug parameter -d, so try
yum -d 15 update
should give more useful messages about what is happening.

> (The software up2date on Centos use yum?)
I think it does past version 3.

> My proxy settings from yum.conf:
> 
> -------------
> 
> proxy=http://proxy.domainname:8080/
> proxy_username=domainname\user
> proxy_password=password

Can you authenticate with this proxy from the centos machine in firefox ?
I wonder if you could ~trick the proxy by authenticating from the web 
browser, and then running yum afterwards ?
Did you find the http://wiki.linux.duke.edu/YumFaq ?
And if you tried it, how did you set up:
http://ntlmaps.sourceforge.net/

DaveT
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