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Copy file name to clipboardExpand all lines: defender-endpoint/attack-surface-reduction.md
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- tier2
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- mde-asr
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search.appverid: met150
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ms.date: 05/02/2024
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ms.date: 01/10/2025
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---
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# Attack surface reduction rules overview
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## Warn mode for users
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(**NEW**!) Prior to warn mode capabilities, attack surface reduction rules that are enabled could be set to either audit mode or block mode. With the new warn mode, whenever content is blocked by an attack surface reduction rule, users see a dialog box that indicates the content is blocked. The dialog box also offers the user an option to unblock the content. The user can then retry their action, and the operation completes. When a user unblocks content, the content remains unblocked for 24 hours, and then blocking resumes.
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Whenever content is blocked by an attack surface reduction rule, users see a dialog box that indicates the content is blocked. The dialog box also offers the user an option to unblock the content. The user can then retry their action, and the operation completes. When a user unblocks content, the content remains unblocked for 24 hours, and then blocking resumes.
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Warn mode helps your organization have attack surface reduction rules in place without preventing users from accessing the content they need to perform their tasks.
Copy file name to clipboardExpand all lines: defender-endpoint/microsoft-defender-endpoint-linux.md
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ms.topic: conceptual
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ms.subservice: linux
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search.appverid: met150
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ms.date: 01/07/2025
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ms.date: 01/10/2025
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---
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# Microsoft Defender for Endpoint on Linux
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> [!NOTE]
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> Linux distribution using system manager supports both SystemV and Upstart.
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> Microsoft Defender for Endpoint on Linux agent is independent from [OMS agent](/azure/azure-monitor/agents/agents-overview#log-analytics-agent).
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> Microsoft Defender for Endpoint on Linux agent is independent from [Operation Management Suite (OMS) agent](/azure/azure-monitor/agents/agents-overview#log-analytics-agent).
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> Microsoft Defender for Endpoint relies on its own independent telemetry pipeline.
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### System requirements
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- List of supported filesystems for RTP, Quick, Full, and Custom Scan.
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|RTP, Quick, Full Scan| Custom Scan|
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|---|---|
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|`btrfs`|All filesystems supported for RTP, Quick, Full Scan|
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|`ecryptfs`|`Efs`|
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|`ext2`|`S3fs`|
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|`ext3`|`Blobfuse`|
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|`ext4`|`Lustr`|
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|`fuse`|`glustrefs`|
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|`fuseblk`|`Afs`|
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|`jfs`|`sshfs`|
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|`nfs` (v3 only)|`cifs`|
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|`overlay`|`smb`|
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|`ramfs`|`gcsfuse`|
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|`reiserfs`|`sysfs`|
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|`tmpfs`||
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|`udf`||
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|`vfat`||
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|`xfs`||
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|RTP, Quick, Full Scan| Custom Scan|
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|---|---|
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|`btrfs`|All filesystems supported for RTP, Quick, Full Scan|
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|`ecryptfs`|`Efs`|
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|`ext2`|`S3fs`|
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|`ext3`|`Blobfuse`|
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|`ext4`|`Lustr`|
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|`fuse`|`glustrefs`|
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|`fuseblk`|`Afs`|
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|`jfs`|`sshfs`|
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|`nfs` (v3 only)|`cifs`|
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|`overlay`|`smb`|
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|`ramfs`|`gcsfuse`|
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|`reiserfs`|`sysfs`|
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|`tmpfs`||
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|`udf`||
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|`vfat`||
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|`xfs`||
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> [!NOTE]
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> Starting with version `101.24082.0004`, Defender for Endpoint on Linux no longer supports the `Auditd` event provider. We're transitioning completely to the more efficient eBPF technology.
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> Starting with version `101.24082.0004`, Defender for Endpoint on Linux no longer supports the `Auditd` event provider. We're transitioning completely to the more efficient extended Berkeley Packet Filter (eBPF) technology.
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> If eBPF isn't supported on your machines, or if there are specific requirements to remain on Auditd, and your machines are using Defender for Endpoint on Linux version `101.24072.0001` or lower, then Audit framework (`auditd`) must be enabled on your system.
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> If you're using Auditd, then system events captured by rules added to `/etc/audit/rules.d/` adds to `audit.log`(s) and might affect host auditing and upstream collection. Events added by Microsoft Defender for Endpoint on Linux are tagged with the `mdatp` key.
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- /opt/microsoft/mdatp/sbin/wdavdaemon requires executable permission. For more information, see "Ensure that the daemon has executable permission" in [Troubleshoot installation issues for Microsoft Defender for Endpoint on Linux](linux-support-install.md).
Copy file name to clipboardExpand all lines: defender-endpoint/minimum-requirements.md
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author: denisebmsft
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ms.reviewer: pahuijbr
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ms.localizationpriority: medium
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ms.date: 01/06/2025
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ms.date: 01/10/2025
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manager: deniseb
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audience: ITPro
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ms.collection:
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- Windows 10 Education
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- Windows 10 Pro
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- Windows 10 Pro Education
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- Windows server
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- Windows Server
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- Windows Server 2012 R2
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- Windows Server 2016
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- Windows Server, version 1803 or later
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The minimum hardware requirements for Defender for Endpoint on Windows devices are the same as the requirements for the operating system itself (that is, they aren't in addition to the requirements for the operating system).
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- Cores: Two minimum, four preferred
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- Memory: One GB minimum, four preferred
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- Cores: 2 minimum, 4 preferred
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- Memory: 1GB minimum, 4 GB preferred
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### Network and data storage and configuration requirements
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When you run the onboarding wizard for the first time, you must choose where your Microsoft Defender for Endpoint-related information is stored: in the European Union, the United Kingdom, or the United States datacenter.
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> [!NOTE]
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> - You can't change your data storage location after the first-time setup.
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> - Review the [Microsoft Defender for Endpoint data storage and privacy](data-storage-privacy.md) for more information on where and how Microsoft stores your data.
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#### IP stack
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IPv4 (Internet Protocol Version 4) stack must be enabled on devices for communication to the Defender for Endpoint cloud service to work as expected.
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Internet Protocol Version 4 (IPv4) stack must be enabled on devices for communication to the Defender for Endpoint cloud service to work as expected.
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Alternatively, if you must use an IPv6-only configuration, consider adding dynamic IPv6/IPv4 transitional mechanisms, such as DNS64/NAT64 to ensure end-to-end IPv6 connectivity to Microsoft 365 without any other network reconfiguration.
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Alternatively, if you must use an Internet Protocol Version 6 (IPv6) only configuration, consider adding dynamic IPv6/IPv4 transitional mechanisms, such as DNS64/NAT64 to ensure end-to-end IPv6 connectivity to Microsoft 365 without any other network reconfiguration.
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