Help Center/ NAT Gateway/ FAQs/ Public NAT Gateways/ Which Ports Cannot Be Accessed?

Updated on 2023-03-17 GMT+08:00

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Which Ports Cannot Be Accessed?

Some carriers will block the following ports for security reasons. It is recommended that you do not use the following ports.

Protocol	Port
TCP	42 135 137 138 139 444 445 593 1025 1068 1434 3127 3128 3129 3130 4444 4789 4790 5554 5800 5900 9996
UDP	135 to 139 1026 1027 1028 1068 1433 1434 4789 4790 5554 9996

Parent topic: Public NAT Gateways

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