[CentOS] limiting yum url question

Hi,

 

I need to configure yum to limit the number of URLs going out for
security reason. I don't find a configuration for include option. I do
find an exclude option in /etc/yum/pluginconf.d/fastestmirror.conf. It
would be impossible to exclude every url in this file. What is the best
way to limit the traffic going out interest for yum? Is the local
network repository a better way or does there exist an include option
that I am not aware of?

 

Thanks,

 

--xinhuan

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