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Old 02-20-2008, 05:51 AM
+Alan Hicks+
 
Posts: n/a
Default Re: SSH visits from users who were not given permission--can they be blocked?

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People! Please learn to trim your quotes. It is insane to include that
much crap that you're not directly reploying too. You left 1.3 times
_more_ quoted lines as you reply lines. See how I'm only replying to 3
of your lines, so I trim out the rest? Not doing so makes you look like
an ass.

In alt.os.linux.slackware, Grant Coady dared to utter,
> I took out 10-Base-T LAN
> segment and put in a CAT5 run to another room. Too unreliable, the
> old coax.


I think you mean 10Base2.

10Base2 = thinnet; thin, malable coax cable, runs at up to 10Mbps,
works at out to 185 meters without signal loss
10Base5 = thicknet; fat, ugly coax cable, POS, runs at 10Mbps,
works at out to 500 meters without signal loss
10BaseT = twisted pair; thin, malable 4 pair cat-5 cable, runs at
10, 100, or 1000Mbps and possible beyond with higher
category cable, works without signal degredation out to
100 meters

Note that the IEEE way of writing the various standards is split into
three parts (and doesn't quite follow a standard, ain't that a crock?).

Speed + type + length

Speed is the speed data can travel down the wire in Mbps. Note that
twisted pair is sometimes written 100BaseT or 1000BaseT for this
reason.

Type is either Base or Broad. Base indicates baseband, which means that
a network signal (really just a change in voltage along the cable) is
sent down a single channel. Broadband indicates that the signal is sent
down multiple channels at the same time. Note this has absolutely
nothing to do with your home internet connection.

Length is the approximate distance in 100 meter incriments that the
standard is reliable out to. In 10BaseT, the T means "twisted pair"
instead. Don't ask me why they did this, but they did it.

Everyone happy with your friendly neighborhood networking lesson today?

- --
It is better to hear the rebuke of the wise,
Than for a man to hear the song of fools.
Ecclesiastes 7:5
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