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| Intersubnet communication within your virtual network | Inbound & Outbound | * | The address space for the virtual network that has your ISE's subnets | The address space for the virtual network that has your ISE's subnets | Required for traffic to flow *between* the subnets in your virtual network. <p><p>**Important**: For traffic to flow between the *components* in each subnet, make sure that you open all the ports within each subnet. |
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| Communication from Azure Logic Apps | Outbound | 80, 443 | VirtualNetwork | The tag for the destination service | The destination service is the external service with which your logic app needs to communicate. |
| Communication to Azure Logic Apps | Inbound | 443 | Internal ISE: <br>VirtualNetwork <p><p>External ISE: <br>Internet | VirtualNetwork | The source IP address for the computer or service that calls any request triggers or webhooks in your logic app. <p><p>**Important**: Closing or blocking this port prevents HTTP calls to logic apps that have request triggers. |
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| Communication to your logic app | Inbound | 443 | Internal ISE: <br>VirtualNetwork <p><p>External ISE: <br>Internet | VirtualNetwork | The source IP address for the computer or service that calls any request triggers or webhooks in your logic app. <p><p>**Important**: Closing or blocking this port prevents HTTP calls to logic apps that have request triggers. |
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| Logic app run history | Inbound | 443 | Internal ISE: <br>VirtualNetwork <p><p>External ISE: <br>Internet | VirtualNetwork | The source IP address for the computer or service from where you want to view your logic app's run history. <p><p>**Important**: Although closing or blocking this port doesn't prevent you from viewing the run history, you can't view the inputs and outputs for each step in that run history. |
| Communication from Azure Traffic Manager | Inbound | Internal ISE: 454 <p><p>External ISE: 443 | AzureTrafficManager | VirtualNetwork ||
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| Logic Apps Designer - dynamic properties | Inbound | 454 | See **Notes** column for IP addresses to allow | VirtualNetwork | Requests come from the Logic Apps access endpoint [inbound](../logic-apps/logic-apps-limits-and-config.md#inbound) IP addresses for that region. |
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| Connector deployment | Inbound | 454 | AzureConnectors | VirtualNetwork | Required for deploying and updating connectors. Closing or blocking this port causes ISE deployments to fail and prevents connector updates or fixes. |
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| Network health check | Inbound | 454 | See **Notes** column for IP addresses to allow | VirtualNetwork | Requests come from the Logic Apps access endpoint for both [inbound](../logic-apps/logic-apps-limits-and-config.md#inbound) and [outbound](../logic-apps/logic-apps-limits-and-config.md#outbound) IP addresses for that region. |
| Connector deployment | Inbound | 454 | AzureConnectors | VirtualNetwork | Required for deploying and updating connectors. Closing or blocking this port causes ISE deployments to fail and prevents connector updates or fixes. |
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| Communication from Azure Traffic Manager | Inbound | Internal ISE: 454 <p><p>External ISE: 443 | AzureTrafficManager | VirtualNetwork ||
| Connector policy deployment | Inbound | 3443 | APIManagement | VirtualNetwork | Required for deploying and updating connectors. Closing or blocking this port causes ISE deployments to fail and prevents connector updates or fixes. |
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| Communication from your logic app | Outbound | 80, 443 | VirtualNetwork | The tag for the destination service | The destination service is the external service with which your logic app needs to communicate. |
| Dependency from Log to Event Hub policy and monitoring agent | Outbound | 5672 | VirtualNetwork | EventHub ||
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| Access Azure Cache for Redis Instances between Role Instances | Inbound <br>Outbound | 6379-6383 | VirtualNetwork | VirtualNetwork | Also, for ISE to work with Azure Cache for Redis, you must open these [outbound and inbound ports described in the Azure Cache for Redis FAQ](../azure-cache-for-redis/cache-how-to-premium-vnet.md#outbound-port-requirements). |
| Access Azure Cache for Redis Instances between Role Instances | Inbound <br>Outbound | 6379 - 6383 | VirtualNetwork | VirtualNetwork | Also, for ISE to work with Azure Cache for Redis, you must open these [outbound and inbound ports described in the Azure Cache for Redis FAQ](../azure-cache-for-redis/cache-how-to-premium-vnet.md#outbound-port-requirements). |
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