Error: no matching cipher found (4271542)

When attempting to join a host to a policy group the following error is reported.

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Unable to join host to Policy group

Error: Failed to copy file using ssh.

- Failed to copy file using ssh.

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Ciphers that are required by the ssh server are not available to the ssh client.

1. Determine which ciphers are required.
   1. Run a trace on the join process

- Configure tracing by running the following command on the client as root:

# /opt/quest/sbin/pmpoljoin_plugin –z on

- Run the join command again from the client:

# /opt/quest/sbin/pmjoin_plugin

- Stop the tracing by running the following command:

# /opt/quest/sbin/pmpoljoin_plugin –z off

b. See which ciphers are used by the client and required by the server

# grep –A2 “no matching cipher found” /tmp/pmpoljoin_plugin.trc

c. The result should be similar to the following

Note the ciphers available to the client (red) are not available on the server (blue)

2. On the client update the /etc/ssh/ssh_config with the missing ciphers.

3. Restart ssh