Is port 5228 (Google Cloud Messaging / Android) dangerous?

Port 5228 is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose with standard security practices.

Should port 5228 be open on my firewall?

Port 5228 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 5228 use?

Port 5228 (Google Cloud Messaging / Android) uses the TCP transport protocol and falls under the Messaging category.

:5228 (TCP)

Google Cloud Messaging / Android

Low 风险

TCP — Messaging

端口概览

端口号 5228

服务名称 Google Cloud Messaging / Android

传输协议 TCP

类别 Messaging

安全风险 Low

端口范围已注册 (1024-49151)

什么是端口 5228?

Port 5228 is used by Google Cloud Messaging (GCM) and Firebase Cloud Messaging (FCM) for delivering push notifications to Android devices. Android devices maintain persistent TCP connections to Google servers on this port to receive app notifications. This port must be open on enterprise firewalls for Android push notification delivery.

TCP Messaging 常用

安全注意事项

端口5228（Google Cloud Messaging / Android）被归类为低风险。该服务使用加密或攻击面极小，相对安全可以暴露。

建议：应用标准安全实践。保持软件更新并监控访问。

Google Cloud Messaging / Android

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端口概览

什么是端口 5228?

安全注意事项

相关端口 — Messaging

相关术语