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使用 VNet 流日志（预览版）监视 Azure Virtual Network Manager

监视流量对于了解网络的性能以及排查问题至关重要。 管理员可以利用 VNet 流日志（预览版）来显示流量是流经 VNet 还是由 [安全管理员规则] 阻止。 VNet 流日志（预览版）是网络观察程序的一项功能。

详细了解 VNet 流日志（预览版），包括使用方法以及如何启用。

重要

VNet 流日志目前处于预览状态。 此预览版在提供时没有附带服务级别协议，不建议将其用于生产工作负荷。 某些功能可能不受支持或者受限。 有关 beta 版本、预览版或尚未正式发布的版本的 Azure 功能所适用的法律条款，请参阅 Microsoft Azure 预览版的补充使用条款。

启用 VNet 流日志（预览版）

目前，你需要在要监视的每个 VNet 上启用虚拟网络流日志（预览版）。 可以使用 PowerShell 或 Azure CLI 在 VNet 上启用虚拟网络流日志。

下面是流日志的示例

{
    "records": [
        {
            "time": "2022-09-14T09:00:52.5625085Z",
            "flowLogVersion": 4,
            "flowLogGUID": "a1b2c3d4-e5f6-g7h8-i9j0-k1l2m3n4o5p6",
            "macAddress": "00224871C205",
            "category": "FlowLogFlowEvent",
            "flowLogResourceID": "/SUBSCRIPTIONS/1a2b3c4d-5e6f-7g8h-9i0j-1k2l3m4n5o6p7/RESOURCEGROUPS/NETWORKWATCHERRG/PROVIDERS/MICROSOFT.NETWORK/NETWORKWATCHERS/NETWORKWATCHER_EASTUS2EUAP/FLOWLOGS/VNETFLOWLOG",
            "targetResourceID": "/subscriptions/1a2b3c4d-5e6f-7g8h-9i0j-1k2l3m4n5o6p7/resourceGroups/myResourceGroup/providers/Microsoft.Network/virtualNetworks/myVNet01",
            "operationName": "FlowLogFlowEvent",
            "flowRecords": {
                "flows": [
                    {
                        "aclID": "9a8b7c6d-5e4f-3g2h-1i0j-9k8l7m6n5o4p3",
                        "flowGroups": [
                            {
                                "rule": "DefaultRule_AllowInternetOutBound",
                                "flowTuples": [
                                    "1663146003599,10.0.0.6,52.239.184.180,23956,443,6,O,B,NX,0,0,0,0",
                                   "1663146003606,10.0.0.6,52.239.184.180,23956,443,6,O,E,NX,3,767,2,1580",
                                    "1663146003637,10.0.0.6,40.74.146.17,22730,443,6,O,B,NX,0,0,0,0",
                                    "1663146003640,10.0.0.6,40.74.146.17,22730,443,6,O,E,NX,3,705,4,4569",
                                    "1663146004251,10.0.0.6,40.74.146.17,22732,443,6,O,B,NX,0,0,0,0",
                                    "1663146004251,10.0.0.6,40.74.146.17,22732,443,6,O,E,NX,3,705,4,4569",
                                    "1663146004622,10.0.0.6,40.74.146.17,22734,443,6,O,B,NX,0,0,0,0",
                                    "1663146004622,10.0.0.6,40.74.146.17,22734,443,6,O,E,NX,2,134,1,108",
                                    "1663146017343,10.0.0.6,104.16.218.84,36776,443,6,O,B,NX,0,0,0,0",
                                    "1663146022793,10.0.0.6,104.16.218.84,36776,443,6,O,E,NX,22,2217,33,32466"
                                ]
                            }
                        ]
                    },
                    {
                        "aclID": "b1c2d3e4-f5g6-h7i8-j9k0-l1m2n3o4p5q6",
                        "flowGroups": [
                            {
                                "rule": "BlockHighRiskTCPPortsFromInternet",
                                "flowTuples": [
                                    "1663145998065,101.33.218.153,10.0.0.6,55188,22,6,I,D,NX,0,0,0,0",
                                    "1663146005503,192.241.200.164,10.0.0.6,35276,119,6,I,D,NX,0,0,0,0"
                                ]
                            },
                            {
                                "rule": "Internet",
                                "flowTuples": [
                                    "1663145989563,20.106.221.10,10.0.0.6,50557,44357,6,I,D,NX,0,0,0,0",
                                    "1663145989679,20.55.117.81,10.0.0.6,62797,35945,6,I,D,NX,0,0,0,0",
                                    "1663145989709,20.55.113.5,10.0.0.6,51961,65515,6,I,D,NX,0,0,0,0",
                                    "1663145990049,13.65.224.51,10.0.0.6,40497,40129,6,I,D,NX,0,0,0,0",
                                    "1663145990145,20.55.117.81,10.0.0.6,62797,30472,6,I,D,NX,0,0,0,0",
                                    "1663145990175,20.55.113.5,10.0.0.6,51961,28184,6,I,D,NX,0,0,0,0",
                                    "1663146015545,20.106.221.10,10.0.0.6,50557,31244,6,I,D,NX,0,0,0,0"
                                ]
                            }
                        ]
                    }
                ]
            }
        }
    ]
}

后续步骤

详细了解 VNet 流日志及其使用方法。 详细了解Azure Virtual Network Manager 的事件日志选项。