🚀 go-pugleaf

In article <mAmm6.4120$S25.62449@typhoon.sonic.net>, 
spamfilter@navasgrp.dublin.ca.us says...
> [POSTED TO comp.dcom.modems.cable; PLEASE REPLY THERE]
> 
> In <97cngt$mop$2@news.panix.com>, snorwood@redballoon.net (Scott
> Norwood) wrote:
> 
> >
> >In article <t5nj9t4vvua0ovclofd9fcidjgfqmjnk2m@4ax.com>,
> > <rtoledo.you.must.remove.this.to.reply@bigfoot.com> wrote:
> >>
> >>If I scan your port 21, HOW am I trying to connect to it? and I know
> >>you know it takes more than that it takes a tcp 21/20 connection where
> >>a user name and a password has to be exchanged before that connection
> >>happens,  or is it a trojan going outbound? but then that's internal?
> >>UDP 21? please enlightens us
> >
> >Huh?
> >
> >Either you don't understand how FTP works or you're being intentionally
> >argumentative.
> 
> Probably both.  <g>
> 
> >The "connection" has nothing to do with the exchange of a
> >username/password pair.  I can "connect" to your FTP server just
> >by typing "telnet somehost 21" (or by using any other utility that
> >creates TCP connections...netcat, etc.).  The username/password
> >pair cannot be exchanged until the connection exist.  The fact that
> >an FTP server is basically useless until the username/password
> >pair has been exchange is irrelevant to the question of when the
> >actual connection has been established.
> 
> Correct.
> 
> 


But making that TCP connection is NOT analogous to entering a 
building.  It is analogous to turning a doorknob.  You apply the force 
to the knob (SYN).  The knob responds by turning (SYN-ACK).  You can 
then push on the door to enter, or maybe you need a key (password).

With UDP there is no knob on the door for you to turn.  You just push 
to enter.

Rebeccah