I had a similar issue albeit with a different error message - I found
relevant clues at http://kbase.redhat.com/faq/docs/DOC-16881 



James Curedale
Senior Systems Specialist
Business Systems
Aviation and Business Systems

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-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Tim Evans
Sent: Sunday, 27 September 2009 7:48 AM
To: Giovanni P. Tirloni
Cc: Red Hat Enterprise Linux 5 (Tikanga) discussion mailing-list
Subject: Re: [rhelv5-list] REPOST: Odd Results with RHN/RHEL 5.4 yum

Giovanni P. Tirloni wrote:

> I don't have a RHEL5 subscription to RHN to replicate your problem so 
> here are some questions.
> 
> - Where's that Yum repo pointing to ?

RHN's standard repo

> - Have you tried to manually, from the gateway server, fetch that
package ?
> - Do you see any network traffic at all (use tcpdump to filter packets

> for the repo) ?

I'm wondering if something in iptables changed with the 5.3->5.4 
upgrade.  I actually manage the system remotely via ssh, and it's 
obviously letting me in.  iptables forward/routes packets per the 
firewall rules, and *some* outgoing connections work fine (e.g., the 
housekeeping connection to the yum repo--it does query the repo, learn 
what's new, and validate its oficial RedHat entitlement to updates).  It

just can't download them.  And, outgoing ssh/ftp/other connections also 
fail.

I expect I'll need to find a set of hands on site to shut down iptables 
and see if that clears it.

Thanks.
-- 
Tim Evans, TKEvans.com, Inc.    |   5 Chestnut Court
UNIX System Admin Consulting    |   Owings Mills, MD 21117
http://www.tkevans.com/         |   443-394-3864
http://www.come-here.com/News/  |   [email protected]

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