diff --git a/docs/guides/configuration-guide/commons/sshconfig.md b/docs/guides/configuration-guide/commons/sshconfig.md
index e5632f6887..ec825cd1e3 100644
--- a/docs/guides/configuration-guide/commons/sshconfig.md
+++ b/docs/guides/configuration-guide/commons/sshconfig.md
@@ -7,6 +7,16 @@ sidebar_label: SSH Config
 With the `osism.commons.sshconfig` role, it is possible to manage a SSH config
 file in the home directory of the operator user.
 
+## Extra config
+
+The `sshconfig_extra` parameter can be used to add any other SSH configuration to the `.ssh/config` file.
+
+```yaml
+sshconfig_extra: |
+  Host github.com
+	  ProxyCommand nc -X connect -x <web-proxy-hostname-or-ip>:<web-proxy-port>> ssh.github.com 443
+```
+
 ## Example
 
 In the [testbed](https://github.com/osism/testbed)
@@ -44,11 +54,11 @@ Host testbed-node-2
 
 ## Defaults
 
-**Parameter**                | **Default**                            | **Description**
------------------------------|----------------------------------------|---------------------
-`sshconfig_groupname`        | `all`                                  | All nodes in this group are included.
-`sshconfig_order`            | `20`                                   | The `.ssh/config.d` directory is used to prepare the `.ssh/config` file. You can add your own files in this directory. Everything with a filename prefix smaller than `sshconfig_order` is placed at the beginning of the assembled `.ssh/config` file. Anything with a filename prefix greater than `sshconfig_order` goes at the end.
-`sshconfig_port`             | `22`                                   | The SSH port.
-`sshconfig_private_key_file` | `/opt/ansible/secrets/id_rsa.operator` | The identity file to use. The file itself must already exist there. The file is created by the `osism.services.manager` role.
-`sshconfig_user`             | `"{{ operator_user }}"`                | The user in which home directory the `.ssh/config` file will be generated.
-
+| Parameter                    | Default                                | Description          |
+|:-----------------------------|:---------------------------------------|:---------------------|
+| `sshconfig_groupname`        | `all`                                  | All nodes in this group are included.
+| `sshconfig_order`            | `20`                                   | The `.ssh/config.d` directory is used to prepare the `.ssh/config` file. You can add your own files in this directory. Everything with a filename prefix smaller than `sshconfig_order` is placed at the beginning of the assembled `.ssh/config` file. Anything with a filename prefix greater than `sshconfig_order` goes at the end. |
+| `sshconfig_port`             | `22`                                   | The SSH port.        |
+| `sshconfig_private_key_file` | `/opt/ansible/secrets/id_rsa.operator` | The identity file to use. The file itself must already exist there. The file is created by the `osism.services.manager` role. |
+| `sshconfig_user`             | `"{{ operator_user }}"`                | The user in which home directory the `.ssh/config` file will be generated. |
+| `sshconfig_extra`            | `""`                                   | Add additional SSH configuration to the end of the `.ssh/config` file. |
\ No newline at end of file