---
title: "Microsoft Office 365"
slug: "whitelist-ip-for-office"
updated: 2023-08-01T07:55:41Z
published: 2023-08-01T07:55:41Z
canonical: "support.perimeter81.com/whitelist-ip-for-office"
excludeFromSearch: true
excludeFromExternalSearch: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://support.perimeter81.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Microsoft Office 365

This article describes how to [whitelist](https://support.perimeter81.com/v1/docs/360004369673-whitelisting-cloud-applications)your Private Gateway IPs in Microsoft Office 365 to allow user access only via a secure connection.

Before you begin

1. You'll need Administrator permissions to your company's Office365 workspace.
2. You'll need to have an Owner / Manager [role](https://support.perimeter81.com/v1/docs/360022715853-how-do-i-assign-user-roles)in Perimeter 81.

  

## Whitelisting Gateway IPs in O365

1. Log into your mail server admin portal and select **Admin**.

![360040891673mceclip0.png](https://cdn.document360.io/44667c0c-50d7-412a-acbd-20d4a41c952e/Images/Documentation/360040891673mceclip0.png) 2. Select **Exchange**. ![360040061694mceclip1.png](https://cdn.document360.io/44667c0c-50d7-412a-acbd-20d4a41c952e/Images/Documentation/360040061694mceclip1.png)

![360040061814mceclip2.png](https://cdn.document360.io/44667c0c-50d7-412a-acbd-20d4a41c952e/Images/Documentation/360040061814mceclip2.png)

1. Select **Connection Filter** (beneath the **Protection** heading).  
![360040891933mceclip3.png](https://cdn.document360.io/44667c0c-50d7-412a-acbd-20d4a41c952e/Images/Documentation/360040891933mceclip3.png)
2. Select **Connection Filter**, then select the **Pencil** icon to edit the default connection filter policy.  
![360040061914mceclip4.png](https://cdn.document360.io/44667c0c-50d7-412a-acbd-20d4a41c952e/Images/Documentation/360040061914mceclip4.png)
3. Under the **IP Allow** list, select the **+** sign to add an IP address.
4. Add the Perimeter 81 static address to your **Allowed IP** list.

### ![360040891993mceclip5.png](https://cdn.document360.io/44667c0c-50d7-412a-acbd-20d4a41c952e/Images/Documentation/360040891993mceclip5.png)

1. Select **OK**, then **Save**.