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The 65k limit only applies to concurrent connections to the same remote ip and port. Meaning that you can only make 65k connections from a single IP to the same
by zzzcpan 8y ago
The 65k limit only applies to concurrent connections to the same remote ip and port. Meaning that you can only make 65k connections from a single IP to the same port of another IP. Which is unlimited for all practical purposes. However, popular services that could potentially see a lot of connections - ban IP addresses, do rate limiting, don't allow that many connections from a single IP. This in turn drives policies of small number of clients per IP, sometimes even rotating IPs, all to minimize effect of bans on users sharing the same IP.
- richardwhiuk 8y agoIt's not as unlimited as you might hope. For a typical provider, a large proportion of their traffic is going to go to a limited number of properties (e.g. facebook, google, youtube). Each of those properties is only going to return a limited number of IP addresses, and all of the traffic is going to be to a very small number of ports (i.e. 443/80). I can well believe that clients connects via a single ISP to a single remote port a large multiple of times.