406166 – Microsoft Defender for Office 365: IPv6 allow and block support in Tenant Allow/Block List

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*For this entry exists the more relevant or more recent entry MC889519

check before: 2024-10-01

Product:

Defender, Defender for Office 365, Exchange

Platform:

Online, US Instances, Web, World tenant

Status:

Launched

Change type:

Links:

MC889519

Details:

Admins can create allow and block entries for IPv6 directly inside the Tenant Allow/Block List.

Change Category:
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Scope:
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Release Phase:
General Availability

Created:
2024-07-13

updated:
2024-10-23

Docu to Check

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MS workload name

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Direct effects for Operations**

- Direct Impact on IT Operations
- Increased complexity in managing allow/block lists
- Role Impacted: IT Administrators
- Administrators will need to familiarize themselves with IPv6 configurations, which may require additional training and adjustments to existing processes.
- Potential for misconfiguration leading to service disruptions
- Role Impacted: IT Operations Team
- Incorrectly configured allow/block entries could inadvertently block legitimate traffic or allow malicious traffic, impacting overall service availability.

- Direct Impact on IT Services
- Changes in email filtering and security protocols
- Role Impacted: Security Analysts
- The introduction of IPv6 entries may alter how emails are filtered, necessitating updates to security protocols and monitoring systems to ensure they are effective against new threats.
- Dependency on other services for IPv6 support
- Role Impacted: Network Engineers
- Other IT services that rely on email filtering (e.g., spam detection, malware scanning) may need to be assessed for compatibility with the new IPv6 configurations.

- Direct Impact on IT Users
- Potential for increased false positives or negatives in email delivery
- Role Impacted: End Users
- Users may experience delays or loss of important emails if legitimate IP addresses are mistakenly blocked, leading to frustration and decreased productivity.
- User training and communication requirements
- Role Impacted: IT Support Staff
- Support staff will need to prepare to handle increased inquiries from users regarding email issues related to the new IPv6 allow/block functionality, necessitating clear communication and training materials.

References:
- Microsoft Documentation on Defender for Office 365: [Microsoft Docs](https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/defender-for-office-365?view=o365-worldwide)
- IPv6 Transition and Management: [Internet Society](https://www.internetsociety.org/resources/documents/2020/01/ipv6-transition-and-management/)

Opportunities**

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Potentional Risks**

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** AI generated content. This information must be reviewed before use.

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change history

DatePropertyoldnew
2024-10-23RM StatusRolling outLaunched
2024-10-15RM StatusIn developmentRolling out
2024-10-01RM ReleaseSeptember CY2024October CY2024
2024-09-05RM ReleaseAugust CY2024September CY2024

Last updated 3 weeks ago

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