[1386] in linux-net channel archive
Re: Packet radio
daemon@ATHENA.MIT.EDU (John Paul Morrison)
Thu Nov 16 09:47:45 1995
From: John Paul Morrison <jmorriso@ConcordPacific.com>
To: drew@poohsticks.org (Drew Eckhardt)
Date: Wed, 15 Nov 1995 13:34:45 -0800 (PST)
Cc: linux-net@vger.rutgers.edu
In-Reply-To: <199511150008.RAA06781@chopper.poohsticks.org> from "Drew Eckhardt" at Nov 14, 95 05:08:18 pm
>
>
> I'd like to decrease the latency between myself and my Internet
> cooperative, with a bandwidth increase being a secondary
> consideration. With at least a 56K data rate, packet radio looks like
> it might be able to do this.
Do you mean *amateur* packet radio? Or commercial spread spectrum
radio - I don't think it's normally called packet radio (like WaveLAN
or Cylink). There are some commercial packet radio networks, but they
are slow (email systems similar to pagers)
The spread spectrum stuff would be faster and cheaper, not to mention
easier to setup. With the right antennas and a clear path you can go
at least 13 km (I know a guy who does) or more.
BTW The WaveLAN card has a Linux driver.
If you really mean amateur packet radio, I could tell you a bit about
the 56kbps radio modems. Amateur packet radio is a bit more difficult
to get going at high-speeds, but I suppose half the fun is building
the radios and stuff. (the 56kbps radio can run point-to-point links
or you can use a repeater and you can have a bunch of people sharing
the channel, sort of like ethernet)
>
> What sort of round trip time could I get (Currently, I'm at about
> 130ms)?
>
> What packet modems (56K or faster) are supported under Linux?
> I'm looking at under 15 miles, what else would I need? What would the
> approximate price be for two ends in this configuration (US $)?
>
> Currently, I only allow DES-Encrypted, Kerberos over TCP authenticated
> login sessions from the outside world. Could I still do this (legally)?
>
Some Spread spectrum radios already have built-in DES. I believe it's
legal in all the spread-spectrum bands. In amateur bands you could use
an encrypted authentication scheme, but you are NOT allowed to encrypt
the entire session.
BTW I'd like to know more about how to setup DES-Encrypted Kerberos
logins in Linux (and other Unixes, plus Windows 95, NT if possible).
I thought that Kerberos didnt compile or work properly in Linux.
Is there DES for PPP?
thanks
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John Paul Morrison Concord Pacific Developments VE7JPM
jmorriso@ConcordPacific.com +1-604-895-8270 FAX: +1-604-683-2668
1000, 1095 W. Pender Street, Vancouver, BC, Canada, V6E 2M6
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