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Networking Blog

The Official Blog Site of the Windows Core Networking Team at Microsoft
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7,865

Introducing DNR support for Windows Insiders

AditiPatange on Oct 25 2023 10:00 AM
Instructions for enabling DNR in Windows Insiders to seamlessly deploy encrypted DNS
7,145

NCSI Change Notification

JamesKehr on Jul 05 2023 03:21 PM
A recent change may cause your Windows systems from detecting an Internet connection.
2,909

Network ATC management in Windows Admin Center

Dan Cuomo on Jul 05 2023 10:13 AM
Network ATC continues to be the preferred method to deploy host networking for our Azure Stack HCI customers. For most c...
3,660

Migrate an existing cluster to Network ATC

Dan Cuomo on Jun 09 2023 09:38 AM
Network ATC has led to HUGE reductions in customer support cases which means increased uptime for your business applicat...
3,888

SDN + AKS 3-15-23 Updates and Features

Kyle Bisnett on Mar 16 2023 09:28 AM
Support for leveraging existing SDN vNETs, multiple vNETs for your Target clusters to support isolation, and a new AKS H...
8,024

Physical switch requirement changes for Azure Stack HCI

Basel_Kablawi on Mar 15 2023 10:15 AM
Read on to see the latest updates to the Azure Stack HCI physical network switch requirements!
5,389

Azure Stack HCI: What's new for Software Defined Networking (SDN) with WAC v2211

Kyle Bisnett on Jan 17 2023 12:50 PM
Today is an exciting day as we share with each of you the extensive new features and improvements for SDN in Windows Adm...
4,404

Survey: Accelerated Networking

Basel_Kablawi on Jan 06 2023 03:10 PM
We want to hear from you regarding Accelerated Networking!
6,126

Network HUD: November 2022 content update has arrived!

Dan Cuomo on Nov 15 2022 06:01 AM
In our first article we introduced Network HUD as a new feature that proactively identifies and remediates operational n...
6,359

Introducing Network HUD for Azure Stack HCI

Dan Cuomo on Nov 15 2022 06:00 AM
We’re excited to announce the release of Network HUD - A new feature that proactively identifies and remediates operatio...
5,173

General Availability for SDN integration with AKS on Azure Stack HCI

Kyle Bisnett on Oct 12 2022 10:05 AM
Our SDN and AKS engineering teams are so excited to announce General Availability to fuel our customer’s desire to enabl...
11.4K

LEDBAT Background Data Transfer for Windows

Daniel Havey on Sep 30 2022 08:50 AM
LEDBAT is the background data transfer product built into the Windows networking stack and recommended by the Windows Da...
5,918

Balance Performance in MsQuic and XDP

huanyi on Sep 16 2022 03:36 PM
Improving performance has always been a major goal for MsQuic. Recently, we have put in a lot of effort into getting ult...
9,227

NIC Certification updates in the Windows Server Catalog

Dan Cuomo on Aug 31 2022 08:38 AM
Read on to see how we’re simplifying the structure of Windows Server NIC certifications into a "role-based" structure!
5,902

Troubleshooting SDN Windows Admin Center Certificates

Kyle Bisnett on Aug 30 2022 02:58 PM
If you are receiving "The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secur...
5,670

Az Stack HCI: Software Defined Networking (SDN) extensions reach General Availability for WAC

Kyle Bisnett on Aug 25 2022 10:31 AM
SDN Extensions reach general availability for WAC: The rumors are true - SDN Infrastructure, Network Security Groups, Lo...
44.3K

DNS over TLS available to Windows Insiders

tojens on Jul 13 2022 10:00 AM
Instructions for enabling DNS over TLS support for Windows DNS client
11.9K

Open Source XDP for Windows

nibanks on May 24 2022 09:56 AM
We're bringing the latest in network acceleration technology to Windows, and it's open source!
20.5K

Aligning on mDNS: ramping down NetBIOS name resolution and LLMNR

tojens on Apr 22 2022 09:00 AM
Describing our first step toward turning NetBIOS name resolution and LLMNR off by default
54.6K

mDNS in the Enterprise

JamesKehr on Apr 04 2022 01:36 PM
mDNS is everywhere these days because it is simple, easy to build, and user friendly. Everyone in the tech industry love...
8,237

Troubleshooting HTTP/3 in http.sys

tojens on Apr 01 2022 09:00 AM
A review of some common HTTP/3 deployment challenges and how to address them
28K

Making DoH Discoverable: Introducing DDR

tojens on Oct 27 2021 06:00 AM
Discovery of Designated Resolvers (DDR) is available to Windows Insiders to dynamically discover DoH configurations
20.1K

Deploying HTTP/3 on Windows Server at Scale

nibanks on Oct 12 2021 12:40 PM
We've recently started deploying HTTP/3 to Exchange Online servers globally and have some pretty exciting data to share!
8,517

Network ATC: Common Preview Questions

Dan Cuomo on Sep 27 2021 09:07 AM
Network ATC has received some great feedback during its time in preview. We’ve heard that you love how it: Simplifies de...
35.8K

What's QUIC?

JamesKehr on Aug 25 2021 06:58 AM
This is a quick discussion, all puns intended, about why QUIC is important to the modern internet.
44.2K

Enabling HTTP/3 support on Windows Server 2022

tojens on Aug 24 2021 06:00 AM
Instructions for enabling HTTP/3 for your Windows Server-based web services
24.1K

Windows Insiders gain new DNS over HTTPS controls

tojens on Jun 29 2021 06:00 AM
A recap of the new ways Insiders can configure the use of DNS over HTTPS on Windows
9,979

Network ATC on Azure Stack HCI

Dan Cuomo on May 27 2021 11:50 AM
Azure Stack HCI is a subscription service that, like Office 365 or Windows 10, continually get free updates. The next up...

Latest Comments

Hellsmoke
in Windows Subsystem for Linux for testing Windows 10 PTP Client on Nov 30 2023 02:40 AM
Hi all I don't get it.It tried everything above with Hyper-V-Manager and virtual Windows 11, virtual Windows Server. I installed Ubuntu 20.4, Ubuntu 22.4. I can start and stop w32tm (with enabled PTPclient). I can start and stop ptpd on Ubuntu. I included the correct IPs in PTPdUnicast.conf and Regi...
0 Likes
Simple_Thought
in Algorithmic improvements boost TCP performance on the Internet on Nov 29 2023 06:36 PM
It would be great if this was ported back to windows 10. There are still upwards of two years of support left for IOT / LTS which I have on a few systems that are not eligible for moving to Windows 11 unfortunately
0 Likes
JonBuhagiar
in mDNS in the Enterprise on Nov 17 2023 12:23 PM
@mvduin I misworded my original reply, I didn't try to mislead. You are correct mDNS is a peer-to-peer name resolution protocol, hence the security problems :) I probably should have worded it as: if the functionality is still required between domain join hosts... I do ponder your thoughts on filter...
0 Likes
mvduin
in mDNS in the Enterprise on Nov 17 2023 11:24 AM
If mDNS is still required between clients and servers, perhaps a Connection Security Rule in the Windows Defender Firewall with Advanced Security MMC could be created to only allow authenticated computer to respond to UDP 5353.@JonBuhagiar The caveat with that idea is that mDNS is more peer-to-peer ...
0 Likes
JonBuhagiar
in mDNS in the Enterprise on Nov 17 2023 10:43 AM
This is a great discussion about mDNS in enterprise environments and how to mitigate it. I have studied the Microsoft implementation of mDNS from a blue team aspect, as well as other decentralized name resolutions methods like LLMNR. You can find some scripts to mitigate attack at https://github.com...
0 Likes