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Is there a hard limit of 65536 open TCP connections per IP address on linux?

Fresh5 days ago
Mar 15, 202636029 views
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Problem

Is there a hard limit of 65536 open TCP connections per IP address on linux? I read somewhere that there was, but someone is asking for confirmation and i just can't find it. I seem to remember it was something about the file descriptors being a 16 bit integer which limits it somehow? Or is this ho…

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Fix for: Is there a hard limit of 65536 open TCP connections per IP address on linux?

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You may be thinking of number of ports. There are 65536 ports available in the TCP in the current versions of IPv4. This is not just a Linux limitation, its part of the protocol. Your IP address identifies your machine, and the port identifies a pro…

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