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Networking Blog

The Official Blog Site of the Windows Core Networking Team at Microsoft
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1,002

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...
1,437

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...
1,416

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...
2,708

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...
1,827

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...
3,045

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!
1,801

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...
2,101

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...
24.9K

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
6,510

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!
9,242

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
14K

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...
4,041

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
20.1K

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
16K

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!
4,835

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...
21.8K

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.
23.3K

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
15.9K

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
6,980

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...
14.3K

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...
22.8K

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.
8,481

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 ...
4,799

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...
6,189

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...
52.6K

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...
68.1K

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 
16.6K

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...
112K

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.

Latest Comments

yannbouvier
in mDNS in the Enterprise on Nov 24 2022 03:17 AM
Hi @jplopper , no unless you manage the Responder endpoint and it it should'nt be.If you want to prevent from step 3, the only solution is to block outbound traffic on your computer and create a "mDNS (UDP-Out)" firewall rule to prevent computer to send mDNS request and receive a potential poisonned...
0 Likes
JamesKehr
in What's QUIC? on Nov 17 2022 11:38 AM
@HotCakeX QUIC works differently than traditional TLS over TCP. QUIC is more akin to SMB or NFS, in that you send commands (called frames in QUIC) inside of either a long or short packet (not to be mistaken with an Ethernet frame that is often called a packet). The Initial packets carry the key exch...
1 Likes
ravida80
in What's QUIC? on Nov 12 2022 03:40 AM
QUIC is a new protocol designed to improve the performance of web and mobile applications.
0 Likes
HotCakeX
in What's QUIC? on Nov 12 2022 02:31 AM
Do QUIC and MsQuic encrypt the client hello by default (which includes SNI) ? I want to know whether QUIC will still benefit from ECH or does it already incorporate the type of encryption that ECH brings to the table?Thanks
0 Likes
GabrielRosso
in L2bridge Container Networking on Nov 10 2022 10:59 AM
Hi all, how can I create programmatically an external virtual switch of type "L2Bridge" that can work in an business environment where the "eapol" protocol (Standard 802.1X) is used? Background: Attaching the tool "Wireshark" to a physical network adapter it can be seen when plugging in the ethernet...
0 Likes