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Networking Blog

The Official Blog Site of the Windows Core Networking Team at Microsoft
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17.8K

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
4,923

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!
6,967

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
6,273

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...
3,044

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
17.5K

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
14.8K

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!
3,821

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...
18.4K

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.
19.4K

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
13.5K

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
6,071

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...
12.3K

Algorithmic improvements boost TCP performance on the Internet

huanyi on May 11 2021 07:56 PM
We will walk through our journey and show how we made big strides in improving performance between Windows Server 2016 a...
21.9K

Making MsQuic Blazing Fast

nibanks on Apr 14 2021 11:13 AM
In the last year, MsQuic upload speeds have more than quadrupled! Come read about all we've done for MsQuic performance.
7,727

Troubleshooting Switch Misconfiguration

Dan Cuomo on Mar 19 2021 01:46 PM
It can be difficult to determine if you host can't communicate because of a host or physical network configuration. The ...
4,311

Azure Kubernetes Service on Azure Stack HCI Parity with AKS PowerShell

jessicaguan on Mar 03 2021 09:00 AM
Azure Kubernetes Service on Azure Stack HCI's most recent release with PowerShell updates to align more with Azure Kuber...
5,577

Quick Tip: Does my NIC support VMMQ?

Dan Cuomo on Feb 22 2021 11:49 AM
This article gives a brief overview of VMMQ and provides a pointer on how to quickly identify if your adapters support t...
51.9K

Calico for Windows goes Open Source

mkostersitz on Sep 22 2020 07:08 AM
Over the last couple of years Microsoft and Tigera have been working together to close some significant gaps in the Wind...
67.6K

Windows Server Insiders getting gRPC support in Http.sys

tojens on Jul 22 2020 06:00 AM
Announcing new Http.sys features to support gRPC 
16.2K

Pointer: Domain Time Synchronization in the Age of Working from Home

Dan Cuomo on Jun 05 2020 09:04 AM
Working from home has presented challenges in many areas and it is true for time synchronization on computers used at ho...
109K

Introducing Packet Monitor

george-guirguis on May 22 2020 06:00 AM
Packet Monitor is an in-box cross-component network diagnostics tool for Windows.
159K

Windows Insiders can now test DNS over HTTPS

tojens on May 13 2020 10:00 AM
This post will explain how to use DoH as a Windows Insider
53.3K

MsQuic is Open Source

Daniel Havey on Apr 28 2020 03:49 PM
Microsoft is open sourcing our QUIC library, MsQuic, on GitHub under an MIT license. MsQuic is a cross-platform, general...
27.3K

Introducing SDNSecurityToolkit

tojens on Apr 01 2020 06:00 AM
A new tool for analyzing vulnerabilities in SDN deployments
59.6K

L2bridge Container Networking

David Schott on Mar 05 2020 06:00 AM
L2bridge networking is widely used in software-defined data centers thanks to its high configurability, performance, rel...
87.9K

Teaming in Azure Stack HCI

Dan Cuomo on Feb 03 2020 06:00 AM
Windows Server currently has two inbox teaming mechanisms with two very different purposes. In this article, we’ll descr...
148K

Windows will improve user privacy with DNS over HTTPS

tojens on Nov 17 2019 09:00 PM
Announcing and explaining our intention to support DNS over HTTPS in future versions of Windows
41K

Windows Containers and Rancher 2.3

mkostersitz on Oct 08 2019 09:05 AM
Container technology is transforming the face of business and application development. 70% of on-premises workloads toda...
34.8K

Disabling Legacy TLS

Gabriel Montenegro on Oct 02 2019 06:00 AM
Please read our blog on new capabilities in Windows Server 2019 to enforce improved security on connections.

Latest Comments

fbifido fbifido
in DNS over TLS available to Windows Insiders on Jul 28 2022 09:23 PM
Google Online Security Blog: DNS-over-HTTP/3 in Android (googleblog.com)
0 Likes
doctordns
in DNS over TLS available to Windows Insiders on Jul 26 2022 04:42 AM
First, requiring the IP address makes sense. ALthough I'd point out that (at least with server) one can specify a DNS sever name and Windows does the resolution. I think WIndows should offer that, despite the chicken/egg issue. BY all means pop up a horrible dialog box warning the user of the danger...
0 Likes
HotCakeX
in DNS over TLS available to Windows Insiders on Jul 25 2022 02:19 PM
@tojens Thanks for the reply, you are absolutely right, I didn't think about the chicken and egg problem. now I realize OSes that don't allow users to enter IP address make the process less secure. I also think users should have the option to use secure DNS during Windows installation, the first tim...
0 Likes
tojens
in DNS over TLS available to Windows Insiders on Jul 25 2022 02:08 PM
Hey @HotCakeX no, we require DNS servers always be identified by IP address with other metadata such as DoH templates and DoT hostnames provided in addition. This is to avoid the security shortcomings posed by the chicken and egg problem with using hostname-based DNS: what DNS server are you trustin...
1 Likes
HotCakeX
in DNS over TLS available to Windows Insiders on Jul 25 2022 02:01 PM
Can I just enter the hostname and no IP address for DoH or DoT? just like Android OS.there are many DoT/DoH providers that don't offer IP address.
0 Likes