中国移动 NAT 是随机对称型 NAT? 两台移动设备之间是否有办法进行 UDP 打洞?

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This topic created in 984 days ago, the information mentioned may be changed or developed.

同一个 local_addr, 对不同 remote_addr 进行访问, 某些对称型 NAT 是可以猜测出口地址的, 比如电信家宽:

访问 xxxx:1234:

2023-08-27 17:25:56 - server/src/main.rs:76 -> Server started on xxxx:1234 2023-08-27 17:25:59 - core/src/server.rs:77 -> [STUN] connection accepted: addr=x.113.51.76:2100 2023-08-27 17:25:59 - core/src/server.rs:77 -> [STUN] connection accepted: addr=x.113.51.76:2100 2023-08-27 17:26:01 - core/src/server.rs:77 -> [STUN] connection accepted: addr=x.113.51.76:2103

访问 xxxx:9999:

2023-08-27 17:25:52 - server/src/main.rs:76 -> Server started on xxxx:9999 2023-08-27 17:25:59 - core/src/server.rs:77 -> [STUN] connection accepted: addr=x.113.51.76:2101 2023-08-27 17:26:01 - core/src/server.rs:77 -> [STUN] connection accepted: addr=x.113.51.76:2104 2023-08-27 17:26:02 - core/src/server.rs:77 -> [STUN] connection accepted: addr=x.113.51.76:2108

但是中国移动测试下来, 似乎是对 remote_addr 进行了哈希, 随机分区:

访问 xxxx:1234:

2023-08-27 17:29:01 - server/src/main.rs:76 -> Server started on xxxx:1234 2023-08-27 17:29:37 - core/src/server.rs:77 -> [STUN] connection accepted: addr=x.136.53.79:6039 2023-08-27 17:29:41 - core/src/server.rs:77 -> [STUN] connection accepted: addr=x.136.53.79:6039 2023-08-27 17:29:42 - core/src/server.rs:77 -> [STUN] connection accepted: addr=x.136.53.79:6040

访问 xxxx:9999:

2023-08-27 17:28:18 - server/src/main.rs:76 -> Server started on xxxx:9999 2023-08-27 17:29:39 - core/src/server.rs:77 -> [STUN] connection accepted: addr=x.136.53.79:51701 2023-08-27 17:29:42 - core/src/server.rs:77 -> [STUN] connection accepted: addr=x.136.53.79:51702 2023-08-27 17:29:44 - core/src/server.rs:77 -> [STUN] connection accepted: addr=x.136.53.79:51703

这就导致 STUN 不起作用, 如何破敌?

3 replies 2023-08-27 21:26:38 +08:00