## Advisory: Red Hat Enterprise Linux RHEL licensing requirements for Glasswall Halo virtual appliance customers

Glasswall Halo virtual appliances are built on **Red Hat Enterprise Linux RHEL** to provide a secure and stable foundation for the platform.

**Important:** A RHEL subscription is **not included** with the Glasswall Halo virtual appliance. Glasswall does not resell or bundle RHEL licenses.

### Customer responsibility for RHEL licensing

To receive RHEL updates, security patches, and support, customers must obtain a valid RHEL subscription directly from **Red Hat** or an **authorized Red Hat partner**.

#### Subscription requirement

An active RHEL subscription is required for **each instance** of the Glasswall Halo virtual appliance.

#### System registration

Each RHEL system must be registered with **Red Hat Subscription Management RHSM** using the customer’s own Red Hat account credentials.

#### Updates and patches

Only registered and subscribed systems are eligible to receive:

* Critical security updates  
* Software patches  
* Official Red Hat support  

Unregistered or unlicensed systems may become vulnerable and are not eligible for support.

### Why this matters

Red Hat’s subscription model is required to:

* Ensure timely access to security updates and patches  
* Maintain system integrity and compliance  
* Access official Red Hat support services  

Operating without a valid subscription increases the risk of unpatched vulnerabilities and unsupported environments.

### Next steps

* If you do not have a Red Hat account or subscription, visit the [Red Hat Customer Portal](https://access.redhat.com/) for information on purchasing and managing subscriptions.
* For guidance on registering your RHEL system, refer to [Red Hat system registration documentation](https://access.redhat.com/documentation/en-us/red_hat_subscription_management/).