Microsoft Windows Defender Firewall

About the Device

Windows Defender Firewall with Advanced Security is an important part of a layered security model. By providing host-based, two-way network traffic filtering for a device, Windows Defender Firewall blocks unauthorized network traffic flowing into or out of the local device. 

Device Information

 Entity

Particulars

 Entity

Particulars

Vendor Name

Microsoft

Product Name

Windows Defender Firewall

Type of Device

Hosted

Collection Method

Log Type

 Ingestion label

Preferred Logging Protocol - Format

Log collection method

Log Type

 Ingestion label

Preferred Logging Protocol - Format

Log collection method

 Windows Firewall

 WINDOWS_FIREWALL

 Syslog - Structured

CyberHub

Port Requirements

Source

Destination

Port

Source

Destination

Port

Microsoft Windows Defender Firewall

CyberHub

10014(TCP)

To facilitate secure communication and align with our best practice, we strongly encourage the use of Transport Layer Security (TLS) between your security devices and our Adaptive MxDR platform for event forwarding.

While we understand that TLS support may not be available on all devices, if your devices do support TLS communication, we recommend utilizing port 10014 for seamless integration.

In some cases, the upgraded version of the device might incorporate TLS support without prior notice. If you come across such a scenario or for further assistance in configuring TLS, we kindly ask you to reach out to your dedicated Adaptive MxDR Service Delivery Lead.

Device Configuration

To configure Microsoft Windows Defender Firewall

  1. Open the Group Policy Management Console and navigate to Windows Defender Firewall with Advanced Security.

Config_1-20240521-102435.png
  1. In the details pane, in Overview, click Windows Defender Firewall Properties.

Config_1a-20240521-102440.png
  1. For each network location type (Domain, Private, Public), perform the following steps.

    1. Click the tab that corresponds to the network location type (Domain, Private, Public).

    2. In Logging, click Customize.

    3. The default path for the log is %windir%\system32\logfiles\firewall\pfirewall.log

The default file location must have permissions assigned that permit the Windows Defender Firewall service to write to the log file.

d. The default maximum file size for the log is 4,096 kilobytes (KB). If you want to change this size, uncheck the Not configured, and type in the new size in KB, or select a size. When the file reaches its size limit, old log entries are deleted to accommodate new ones, ensuring it doesn't exceed the specified size.

e. To create a log entry when Windows Defender Firewall drops an incoming network packet, change Log dropped packets to Yes.

f. To create a log entry when Windows Defender Firewall allows an inbound connection, change Log successful connections to Yes.

g. Click OK twice

h. Repeat above steps for all three network location type Domain, Private and Public.

To configure Windows NxLog Agent for TLS TCP Log flow on port 10014

  1. Download and Install NxLog agent from Download

  2. Navigate to services.msc and stop the nxlog service

  3. Navigate to folder C:\Program Files (x86)\nxlog\data and delete configcache.dat

  4. For Windows Agent, navigate to the installed location C:\Program Files (x86)\nxlog\conf

  5. Rename below mentioned file to nxlog.conf and copy it C:\Program Files (x86)\nxlog\conf folder.

  1. Replace “CyberHub_IP_Address” with actual CyberHub IP address in nxlog.conf.

  2. Provide the file location for the CA certificate on line number 77 in nxlog.conf file

  1. Now start the nxlog service from services.msc

  2. NxLog agent logs will be available at location C:\Program Files (x86)\nxlog\data\nxlog.log

  3. The log flow should work, and you can check it using tcpdump with the command tcpdump -AA port 10014

Integration Parameters

Parameters required from customer for Integration.

Property

Default Value

Description

Property

Default Value

Description

IP Address

Microsoft Windows Defender Firewall interface IP address

Hostname or IP address of the device which forwards logs to the CyberHub

 

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About Accenture Security
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