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RHEL 6 / CentOS 6 / Scientific Linux 6 Neither RHEL, CentOS nor Scientific Linux (RHEL/CentOS/SL 6) does not ship with a version of OpenSSH that is compatible with Moonshot (they ship with a non- Moonshot-enabled v5.3 of OpenSSH). To get Moonshot support for it, you must install a specific Moonshot-enabled version (v5.9). We have a precompiled version available in our repositories.

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System Preparation

Add the Moonshot libraries.

If you have not already done so, you first need to follow the instructions on how to .

Add Enable the Moonshot OpenSSH Repository

We've moved the

The OpenSSH packages

from the main Moonshot repository into

have their own

, so add the Moonshot RedHat OpenSSH repository to your system by creating a new file at 

dedicated repository, to avoid replacing system's one when not strictly required.

This repository needs to be manually enabled, by editing the /etc/yum.repos.d/moonshot

-ssh.repo with the following content:true

Check that the yum-priorities plugin is enabled in your yum configuration:

bash

  • If the plugin is not enabled, change the enabled line in /etc/yum/pluginconf.d/priorities.conf to 1.

    yum-plugin-priorities

    If the yum-plugin-priorities package is not installed, please see https://wiki.centos.org/PackageManagement/Yum/Priorities for more information.

    • .repo file and setting enabled=1 for the MoonshotSSH repository.

    true

    Ensure that your hostname is correct

    The channel bindings check requires that the hostname of your SSH server match the hostname people are SSHing to. That is, the output of the "hostname" and " and hostname -f" commands  commands should match the FQDN of the server. If it doesn't, change the relevant line in /etc/sysconfig/network to make it so.

    Installation Instructions

    1. Install the Moonshot-enabled pre-compiled OpenSSH packages using yum. This will replace the system-provided OpenSSH:

      bashtrue


    2. If you have already installed the latest version of OpenSSH from the CentOS updates repository and its version is either the same or is newer than the version in our repository, you must use the yum downgrade command to downgrade switch the packages to our version:

      bashtrue


    Configuration Instructions

    Once installed, the Moonshot-enabled OpenSSH server will still need a few quick tweaks in order to turn on the Moonshot support.

    Configure the OpenSSH server to use Moonshot by editing /etc/ssh/sshd_config. Check the following lines are present and uncommented:

    true

    Now restart the OpenSSH server

    Configure the

    Follow the configuration instructions on the page to configure the server.