[Yum] Update system behind a proxy server

[Fabrizio]

Hello,
 my Linux box is behind a proxy server ( M$ isa server ),
 
 
 
 
[ <mailto:root at fc3> root at fc3]# yum update



This is the message 
( This is a new installation box )
 
 Setting up Update Process
Setting up Repo: core
 
<http://ayo.freshrpms.net/fedora/linux/3/i386/core/repodata/repomd.xml:>
http://ayo.freshrpms.net/fedora/linux/3/i386/core/repodata/repomd.xml:
[Errno 4] IOError: HTTP Error 502: Proxy Error ( The ISA Server denies
the specified Uniform Resource Locator (URL). )
Trying other mirror.
Cannot open/read repomd.xml file for repository: core
failure: repodata/repomd.xml from core: [Errno 256] No more mirrors to
try.
-----------------------------------------------

also  up2date this  message :
" Your system is fully updated. No new packages are needed "
this is no real ,  because the system is now installed ...


Thanks very much for your attention
Fabrizio
Venezia-ITALIA
 
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