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user11977218 wrote:Did you set up the "Public Yum Server": http://public-yum.oracle.com/
How to install : system-config-firewall in : Oracle Linux Server release 5.8 x86_64 ?
yum install system-config-firewall
Loaded plugins: rhnplugin, security
This system is not registered with ULN.
ULN support will be disabled.
Setting up Install Process
No package system-config-firewall available.
Nothing to do
# cd /etc/yum.repos.d
change enable=0 to enable=1 on both the el5_u5_base and ol5_u5_base#yum install system-config-firewall
then save and exit
The wget utility does not replace any existing file unless you use the --output parameter.
It's probably easier to simply delete the existing file:
rm -rf /etc/yum.repos.d/etc/public-yum-el5.repo
It is not necessary to edit the file and to enable any channels to apply system updates and install additional packages. The el5_latest repository is enabled by default and that's all you need to have enabled. And eventually ol5_UEK_latest if you use the UEK 2 kernel. On March 22, 2012 Oracle included updates and errata for free.
If the OP does not want to install any system updates and remain at the distribution level (s)he needs to enable only ol5_u8_base.