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articles/network-watcher/nsg-flow-logs-portal.md

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ms.author: halkazwini
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ms.service: network-watcher
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ms.topic: how-to
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ms.date: 07/24/2024
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ms.date: 07/25/2024
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#CustomerIntent: As an Azure administrator, I want to log my virtual network IP traffic using Network Watcher NSG flow logs so that I can analyze it later.
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| Storage accounts | Select the storage account that you want to save the flow logs to. If you want to create a new storage account, select **Create a new storage account**. |
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| Retention (days) | Enter a retention time for the logs (this option is only available with [Standard general-purpose v2](../storage/common/storage-account-overview.md?toc=/azure/network-watcher/toc.json#types-of-storage-accounts) storage accounts). Enter *0* if you want to retain the flow logs data in the storage account forever (until you delete it from the storage account). For information about pricing, see [Azure Storage pricing](https://azure.microsoft.com/pricing/details/storage/). |
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:::image type="content" source="./media/nsg-flow-logs-portal/create-nsg-flow-log.png" alt-text="Screenshot of creating an NSG flow log in the Azure portal.":::
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:::image type="content" source="./media/nsg-flow-logs-portal/create-nsg-flow-log-basics.png" alt-text="Screenshot of creating an NSG flow log in the Azure portal.":::
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> [!NOTE]
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> If the storage account is in a different subscription, the network security group and storage account must be associated with the same Microsoft Entra tenant. The account you use for each subscription must have the [necessary permissions](required-rbac-permissions.md).
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:::image type="content" source="./media/nsg-flow-logs-portal/disable-traffic-analytics.png" alt-text="Screenshot that shows how to disable traffic analytics for an existing flow log in the Azure portal." lightbox="./media/nsg-flow-logs-portal/disable-traffic-analytics.png":::
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## Change a flow log
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## Change flow log settings
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You can change the properties of a flow log after you create it. For example, you can change the flow log version or disable traffic analytics.
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You can change the settings of a flow log after you create it. For example, you can change the flow log version or disable traffic analytics.
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1. In the search box at the top of the portal, enter *network watcher*. Select **Network Watcher** from the search results.
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| Log analytics workspace | Change the Log Analytics workspace that you want to save the flow logs to (if traffic analytics is enabled). |
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| Traffic logging interval | Change the processing interval of traffic analytics (if traffic analytics is enabled). Available options are: one hour and 10 minutes. The default processing interval is every one hour. For more information, see [Traffic Analytics](traffic-analytics.md). |
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:::image type="content" source="./media/nsg-flow-logs-portal/change-flow-log.png" alt-text="Screenshot that shows how to edit flow log's settings in the Azure portal where you can change some virtual network flow log settings." lightbox="./media/nsg-flow-logs-portal/change-flow-log.png":::
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1. Select **Save** to apply the changes or **Cancel** to exit without saving them.
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## List all flow logs
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You can list all flow logs in a subscription or a group of subscriptions. You can also list all flow logs in a region.
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:::image type="content" source="./media/nsg-flow-logs-portal/flow-log-settings.png" alt-text="Screenshot of Flow logs settings page in the Azure portal." lightbox="./media/nsg-flow-logs-portal/flow-log-settings.png":::
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1. Select **Cancel** to close the settings page without making changes.
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## Download a flow log
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The storage location of a flow log is defined at creation. To access and download flow logs from your storage account, you can use Azure Storage Explorer. Fore more information, see [Get started with Storage Explorer](../vs-azure-tools-storage-manage-with-storage-explorer.md).
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:::image type="content" source="./media/nsg-flow-logs-portal/disable-flow-log.png" alt-text="Screenshot shows how to disable a flow log in the Azure portal." lightbox="./media/nsg-flow-logs-portal/disable-flow-log.png":::
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> [!NOTE]
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> If traffic analytics is enabled for a flow log, it must disabled before you can disable the flow log. To disable traffic analytics, see [Change a flow log](#change-a-flow-log).
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> If traffic analytics is enabled for a flow log, it must be disabled before you can disable the flow log. To disable traffic analytics, see [Change a flow log](#change-flow-log-settings).
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## Delete a flow log
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