> ## Documentation Index
> Fetch the complete documentation index at: https://docs.futurex.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Before you start

> System and environment requirements checklist before integration.

Verify your environment meets these requirements.

## Supported hardware

* CryptoHub `7.3.0.x` or later.

## Supported operating systems

* Linux

## Required access

* An account on the CryptoHub with administrator permissions to deploy new services.
* Local administrator/root access on the computer running your OpenSSL-based application.

## Network and firewall

* Allow outbound TCP port **443** from the OpenSSL host to the CryptoHub REST API, specified by FQDN (for example, `cryptohub.example.com`) or CIDR (for example, `203.0.113.0/24`).

<Warning>
  TLS inspection or SSL proxies can break mutual TLS handshakes. Exempt the CryptoHub FQDN(s) from inspection. Configure the CryptoHub with a FQDN so the exemption applies.
</Warning>

## Other

* OpenSSL 3.x
* Latchset `pkcs11-provider` 1.2.0