# Global

The Global parameters are planet-wide settings. This page has two sections: Site Settings and Notifications and Alerts.

## Site Settings 

There are global settings that will be applied to all Sites.

![](/files/XhuRChtFUwvl2OUD5MHQ)

**Trusted Sources**

The ranges of IP addresses which are trusted for providing forwarded IP addresses: for example, the load balancers in front of Reblaze, or the CDN.

## Notification and Alert Settings 

![](/files/xtpUh4TeMlLp9EXskGzW)

When a [Dynamic Rule](/v2.20.2/product-walkthrough/security/dynamic-rules.md) is violated, Reblaze can send immediate alerts to a list of one or more email addresses and hooks (e.g., Slack). 

In addition, a cumulative report of the previous week's violations can be sent to one or more email addresses. 

This section defines one or more **Notification Groups** for these notifications. Clicking on the "**+**" button on the right will display this dialog:

![](/files/zQXLtdQAAe4Y51jKPwin)

The settings for a Notification Group are as follows.

| Setting            | Description                                                                                                                                                 |
| ------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Group** **Name** | A name you choose for display in the Group listing.                                                                                                         |
| **Sites**          | The site(s) for which alerts will be sent.                                                                                                                  |
| **Rules**          | The Dynamic Rules which, when violated, will trigger alerts. When more than one rule is included, a violation of one or more will trigger the notification. |
| **Alerts**         | Information for the recipients of alerts: their email addresses and hooks.                                                                                  |
| **Reports**        | Email addresses for the recipients of cumulative weekly reports.                                                                                            |

An existing Notification Group can be edited by clicking on its listing, or deleted by clicking on the trash button at the right end of its listing.


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