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--- title: Azure Relay port settings | Microsoft Docs description: This article includes a table that describes the required configuration for port values for Azure Relay. ms.topic: article ms.date: 01/24/2026 --- # Azure Relay port settings The following table describes the required configuration for port values for Azure Relay. ## Hybrid Connections Hybrid Connections uses WebSockets on port 443 with Transport Layer Security (TLS) as the underlying transport mechanism, which uses **HTTPS** only. ## Windows Communication Foundation (WCF) Relays |Binding|Transport Security|Port| |-------------|------------------------|----------| |[BasicHttpRelayBinding Class](/dotnet/api/microsoft.servicebus.basichttprelaybinding) (client)|Yes|HTTPS| |" |No|HTTP| |[BasicHttpRelayBinding Class](/dotnet/api/microsoft.servicebus.basichttprelaybinding) (service)|Either|9351/HTTP| |[NetEventRelayBinding Class](/dotnet/api/microsoft.servicebus.neteventrelaybinding) (client)|Yes|9351/HTTPS| |" |No|9350/HTTP| |[NetEventRelayBinding Class](/dotnet/api/microsoft.servicebus.neteventrelaybinding) (service)|Either|9351/HTTP| |[NetTcpRelayBinding Class](/dotnet/api/microsoft.servicebus.nettcprelaybinding) (client/service)|Either|5671/9352/HTTP (9352/9353 if using hybrid)| |[NetOnewayRelayBinding Class](/dotnet/api/microsoft.servicebus.netonewayrelaybinding) (client)|Yes|9351/HTTPS| |" |No|9350/HTTP| |[NetOnewayRelayBinding Class](/dotnet/api/microsoft.servicebus.netonewayrelaybinding) (service)|Either|9351/HTTP| |[WebHttpRelayBinding Class](/dotnet/api/microsoft.servicebus.webhttprelaybinding) (client)|Yes|HTTPS| |" |No|HTTP| |[WebHttpRelayBinding Class](/dotnet/api/microsoft.servicebus.webhttprelaybinding) (service)|Either|9351/HTTP| |[WS2007HttpRelayBinding Class](/dotnet/api/microsoft.servicebus.ws2007httprelaybinding) (client)|Yes|HTTPS| |" |No|HTTP| |[WS2007HttpRelayBinding Class](/dotnet/api/microsoft.servicebus.ws2007httprelaybinding) (service)|Either|9351/HTTP| ## Next steps To learn more about Azure Relay, visit these links: * [What is Azure Relay?](relay-what-is-it.md) * [Relay FAQ](relay-faq.yml)