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Merge pull request #102563 from KumudD/metadataupdatenetworkwatcher-batch2
Metadata update network watcher - batch2
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articles/network-watcher/network-watcher-alert-triggered-packet-capture.md

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description: This article describes how to create an alert triggered packet capture with Azure Network Watcher
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services: network-watcher
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documentationcenter: na
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author: KumudD
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manager: twooley
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author: damendo
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ms.assetid: 75e6e7c4-b3ba-4173-8815-b00d7d824e11
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ms.service: network-watcher
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ms.date: 02/22/2017
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# Use packet capture for proactive network monitoring with alerts and Azure Functions

articles/network-watcher/network-watcher-analyze-nsg-flow-logs-graylog.md

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@@ -3,8 +3,8 @@ title: Analyze Azure network security group flow logs - Graylog | Microsoft Docs
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description: Learn how to manage and analyze network security group flow logs in Azure using Network Watcher and Graylog.
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services: network-watcher
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documentationcenter: na
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author: mattreatMSFT
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author: damendo
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editor: ''
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tags: azure-resource-manager
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ms.date: 09/19/2017
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# Manage and analyze network security group flow logs in Azure using Network Watcher and Graylog

articles/network-watcher/network-watcher-connectivity-cli.md

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description: Learn how to use the connection troubleshoot capability of Azure Network Watcher using the Azure CLI.
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services: network-watcher
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documentationcenter: na
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ms.service: network-watcher
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# Troubleshoot connections with Azure Network Watcher using the Azure CLI

articles/network-watcher/network-watcher-connectivity-overview.md

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description: This page provides an overview of the Network Watcher connection troubleshooting capability
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services: network-watcher
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documentationcenter: na
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ms.service: network-watcher
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# Introduction to connection troubleshoot in Azure Network Watcher

articles/network-watcher/network-watcher-connectivity-portal.md

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description: Learn how to use the connection troubleshoot capability of Azure Network Watcher using the Azure portal.
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services: network-watcher
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documentationcenter: na
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ms.service: network-watcher
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# Troubleshoot connections with Azure Network Watcher using the Azure portal

articles/network-watcher/network-watcher-connectivity-powershell.md

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description: Learn how to use the connection troubleshoot capability of Azure Network Watcher using PowerShell.
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# Troubleshoot connections with Azure Network Watcher using PowerShell

articles/network-watcher/network-watcher-connectivity-rest.md

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description: Learn how to use the connection troubleshoot capability of Azure Network Watcher using the Azure REST API.
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articles/network-watcher/network-watcher-create.md

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description: Learn how to enable Network Watcher in an Azure region.
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# Create an Azure Network Watcher instance

articles/network-watcher/network-watcher-deep-packet-inspection.md

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description: This article describes how to use Network Watcher to perform deep packet inspection collected from a VM
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# Packet inspection with Azure Network Watcher
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### Step 3
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To view the initial Round Trip Time (RTT) in TCP conversations, we will only be looking at the first two packets involved in the TCP handshake. We will be using the first two packets in the three-way handshake, which are the [SYN], [SYN, ACK] packets. They are named for flags set in the TCP header. The last packet in the handshake, the [ACK] packet, will not be used in this scenario. The [SYN] packet is sent by the client. Once it is received the server sends the [ACK] packet as an acknowledgement of receiving the SYN from the client. Leveraging the fact that the server’s response requires very little overhead, we calculate the RTT by subtracting the time the [SYN, ACK] packet was received by the client by the time [SYN] packet was sent by the client.
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To view the initial Round Trip Time (RTT) in TCP conversations, we will only be looking at the first two packets involved in the TCP handshake. We will be using the first two packets in the three-way handshake, which are the [SYN], [SYN, ACK] packets. They are named for flags set in the TCP header. The last packet in the handshake, the [ACK] packet, will not be used in this scenario. The [SYN] packet is sent by the client. Once it is received the server sends the [ACK] packet as an acknowledgment of receiving the SYN from the client. Leveraging the fact that the server’s response requires very little overhead, we calculate the RTT by subtracting the time the [SYN, ACK] packet was received by the client by the time [SYN] packet was sent by the client.
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Using WireShark this value is calculated for us.
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