Before closing this discussion, it’s instructive to say a few additional words about
Web servers and how they use port numbers. Consider a host running a Web server,
such as an Apache Web server, on port 80. When clients (for example, browsers)
send segments to the server, all segments will have destination port 80. In particular, both the initial connection-establishment segments and the segments carrying
HTTP request messages will have destination port 80. As we have just described,
Before closing this discussion, it’s instructive to say a few additional words aboutWeb servers and how they use port numbers. Consider a host running a Web server,such as an Apache Web server, on port 80. When clients (for example, browsers)send segments to the server, all segments will have destination port 80. In particular, both the initial connection-establishment segments and the segments carryingHTTP request messages will have destination port 80. As we have just described,
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