> ## 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

> Lists environment prerequisites and compatibility requirements before installing Futurex PKCS #11.

Verify your environment meets these requirements.

## Supported hardware

* KMES Series 3, running application version `6.3.1.x` or later, with initial setup completed (including loading a Platform Master Key and network configuration).

## Supported operating systems

* Linux
* Windows 10 or later

## Required access

* An account on the KMES with administrator permissions to create roles, identities, TLS PKI, and update system settings.
* Local administrator/root access on all hosts where you install or configure components.

## Network and firewall

* Allow outbound TCP port **2001** (default Host API port) from the client machine where the Futurex PKCS #11 module is installed to the KMES Series 3, specified by FQDN (for example, `kmes.example.com`) or CIDR (for example, `10.0.0.0/24`).

<Warning>
  TLS inspection or SSL proxies can break mutual TLS handshakes. Exempt the KMES FQDN(s) from inspection. Configure the KMES Series 3 with an FQDN so the exemption applies.
</Warning>

## Other

* OpenSSL