> For the complete documentation index, see [llms.txt](https://testnet-docs.gitbook.io/cardano-testnets/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://testnet-docs.gitbook.io/cardano-testnets/oracle-cloud/steps-to-harden-instance.md).

# Steps to harden instance

There are many good resources on this topic, which I will link, other than repeating everything and reinventing the wheel. 

{% hint style="danger" %}
However, please pay attention to the **Hints**, as these highlight OCI-specific quirks that if left unchallenged will make server communications very difficult and lock you out of your instance!
{% endhint %}