Updating rhel

Many packages in a Linux distribution are updated frequently to fix bugs, add features, and protect against security exploits.

When you first launch and connect to an Amazon Linux instance, you may see a message asking you to update software packages for security purposes.

If your server is GUI-based, access System / Administration / Software Update (or run the gpk-update-viewer command) then install the update via the resulting window.

If you are installing another version, make sure you change the version number appropriately when you type the commands at the terminal. The Redhat Network at Soft Layer includes RHN Satellite and Proxy servers.When your Red Hat server is provisioned it is automatically registered to Soft Layer's RHN Satellite server via the appropriate proxy server.It's also possible to mitigate the threat via a manual basis if you can't patch your systems for some reason. Another mitigation method involves implementing segregated networks, something of which I am a huge fan from an organizational and security standpoint.This involves mounting the Samba share file system in use with the "noexec" option to block the exploit. If your Samba servers are on a separate network from potential threats and traffic between the two networks is being blocked, Samba Cry cannot be leveraged.

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This allows customers to be able to perform "up2date" commands locally on their servers and pull updates across the private service network.

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