When to use setup keyword?

[Roderick van Domburg]

> > All services run just fine, but I was thinking that excluding 'setup'
here
> > and there would make for a cleaner solution? For example, I don't think
that
> > HTTP (even 1.1) requires the setup keyword does it?
>
> Please refer to ipfw manual *and* some TCP/IP reference.
> ipfw is TCP/IP level firewall, while HTTP is application level
> protocol (higher). ipfw knows nothing about HTTP.

I know, but HTTP/1.1 does allow for ``threaded sessions'', so to speak. What
I don't know without glancing at any RFC's is whether HTTP/1.1 clients open
multiple sockets on port 80 or several sockets in the dynamic range.

Hence my question: which services require the setup keyword and which don't?

Regards,

Roderick