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Clarify functionality of moduli file

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Jakub Jelen 2020-07-14 09:52:06 +02:00 • committed by pbokoc
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modules/system-administrators-guide/pages/infrastructure-services/OpenSSH.adoc
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@ -140,7 +140,7 @@ System-wide SSH configuration information is stored in the `/etc/ssh/` directory
[options="header"]
|===
|File|Description
|`/etc/ssh/moduli`|Contains Diffie-Hellman groups used for the Diffie-Hellman key exchange which is critical for constructing a secure transport layer. When keys are exchanged at the beginning of an SSH session, a shared, secret value is created which cannot be determined by either party alone. This value is then used to provide host authentication.
|`/etc/ssh/moduli`|Contains Diffie-Hellman groups used for the "Diffie-Hellman group exchange" key exchange method, which is critical for constructing a secure transport layer. When keys are exchanged at the beginning of an SSH session, a shared, secret value is created which cannot be determined by either party alone. If the file is not available, fixed groups will be used. Other key exchange methods do not need this file.
|`/etc/ssh/ssh_config`|The default SSH client configuration file. Note that it is overridden by `~/.ssh/config` if it exists.
|`/etc/ssh/sshd_config`|The configuration file for the [command]#sshd# daemon.
|`/etc/ssh/ssh_host_ecdsa_key`|The ECDSA private key used by the [command]#sshd# daemon.