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Tim Riley <tim### [at] netscape net> wrote in news:3f30388b$1
@news.povray.org:
> Has anyone experienced this? Some time after I've checked the newsgroups
> on news.povray.org (up to an hour later), ZoneAlarm detects that
> news.povray.org (204.213.191.226) tries to access ports 1070 and 1066
> [...]
Probably just the news server timing out your connection. Some news
servers have a default timeout of one hour.
When you connect as a client to a news server (or any other server for that
matter), your PC picks an available port to which the server can send data.
You connect to a server's service port, but to send data back to you, the
server needs a client port to send it to. These client ports are
arbitrary. So while you might connect to the nntp port (119, I think) on
the server, the server sends you back data on an available port selected by
your PC (usually higher than 1023 (the "well known ports")).
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