make ssh client-side compression configurable

Signed-off-by: Alex Waite <[email protected]>

README.md

@@ -59,7 +59,8 @@ Warning: This role disables root-login on the target server! Please make sure yo
 |`ssh_banner` | `false` | `true` to print a banner on login |
 |`ssh_client_hardening` | `true` | `false` to stop harden the client |
 |`ssh_client_port` | `'22'` | Specifies the port number to connect on the remote host. |
-|`ssh_compression` | `false` | Specifies whether compression is enabled after the user has authenticated successfully. |
+|`ssh_client_compression` | `false` | Specifies whether the client requests compression. |
+|`ssh_compression` | `false` | Specifies whether server-side compression is enabled after the user has authenticated successfully. |
 |`ssh_max_auth_retries` | `2` | Specifies the maximum number of authentication attempts permitted per connection. |
 |`ssh_print_debian_banner` | `false` | `true` to print debian specific banner |
 |`ssh_server_enabled` | `true` | `false` to disable the opensshd server |

defaults/main.yml

@@ -8,6 +8,7 @@ ssh_server_enabled: true               # sshd
 ssh_use_dns: false                      # sshd
 
 # true or value if compression is needed
+ssh_client_compression: false           # ssh
 ssh_compression: false                  # sshd
 
 # For which components (client and server) to generate the configuration for. Can be useful when running against a client without an SSH server.

templates/openssh.conf.j2

@@ -113,8 +113,7 @@ PermitLocalCommand no
 # Misc. configuration
 # ===================
 
-# Enable compression. More pressure on the CPU, less on the network.
-Compression yes
+Compression {{ 'yes' if (ssh_client_compression|bool) else 'no' }}
 
 #EscapeChar ~
 #VisualHostKey yes