On 18/07/19 3:55 PM, peter@easthope.ca wrote: > * From: "D. R. Evans" €doc.evans@gmail.com€ > * Date: Wed, 17 Jul 2019 17:01:22 -0600 >> That doesn't seem to be correct. The original e-mail said: >>> Jul 16 11:25:16 joule stunnel: LOG5[4]: Service [https] accepted connection from 127.0.0.1:36140 >> >> So 36140 is the source port. > > I wondered about that also but my understanding is sketchy. > Perhaps Reco didn't mean what he typed. =8~| > >> It's typical behaviour of IP-based clients to choose a "random" [usually >> uniformly distributed within some range] unused high port number for sending, >> and they'll (for most protocols) listen for replies on that same number. In >> general, one can't attach any meaning to the number: it was simply free for >> the client to use. > > Random port numbers? According to > https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers 443 is > the port for HTTPS, recognized as official by IANA. If a browser asks > for https://x.y.z:443/path why change to https://x.y.z:36140/path? > > Thanks, (I guess), ... P. 443 is the official destination port for https; it's what you need to know to connect to it. 36140 is your randomly chosen source port - the server finds that out when the connection is set up. Since you're talking to the loopback address, both source and destination IP addresses are 127.0.0.1. Richard
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