> 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/first-steps.md).

# First steps

At the very least, before going any further, you should:

* Update your system
* Disable the *root* account
* Add some SWAP

If you don't know how to do these things, please refer to [this guide](https://gist.github.com/lokhman/cc716d2e2d373dd696b2d9264c0287a3).