传入 Apple 推送通知的端口号
需要在网络上打开哪些网络服务、端口号、传出传入或两者兼而有之，iPod touch 才能接收 Apple 推送通知？
我知道发送 apns 时要设置的传出端口号。唯一的问题是，在我的学校，几乎每个传出（和传入）端口都被阻止，因此 APN 不起作用。我确信，如果我与网络管理员交谈并告诉他要解锁哪个端口，他会这样做。所以我的问题是： 需要在网络上打开哪些网络服务、端口号、传出传入或两者兼而有之，ipod touch 才能接收 Apple 推送通知？
What network services, port numbers, outgoing incoming or both, need to be open on a network for an ipod touch to receive Apple Push Notifications?
I know the outgoing port number to set when sending the apns. The only thing is, in my school practically every outgoing (and incoming) port is blocked and as a result APNs do not work. I am sure that if I talked to my network administrator and told him which port to unblock, he would do so. So my question is: What network services, port numbers, outgoing incoming or both, need to be open on a network for an ipod touch to receive Apple Push Notifications?
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根据 Apple 文档：端口 5223。
According to Apple's docs: port 5223.
要使 APNS 在您的网络内工作，您必须能够与 17.0.0.0/8:5223 进行通信。 TCP 连接从 iOS 设备建立到 *.push.apple.com。不需要入站 TCP 连接。
For APNS to work from within your network you must be able to communicate to 17.0.0.0/8:5223. The TCP connection is made from iOS device out to *.push.apple.com. There is no inbound TCP connections required.