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On Fri, 2008-05-09 at 12:10 -0600, Mark Galassi wrote:
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<PRE>
Amigos, this is something I've never done, but I will need to do for
some experiments we have.
I need to have a gadget (maybe a mobile phone?) which offers an ethernet
port, preferably with a dhcp server and local subnet, but it's OK if
it's a single address.
</PRE>
</BLOCKQUOTE>
<BR>
I don't know how portable your gadget has to be,<BR>
there are two options here, some takes more hacking than the other,<BR>
<BR>
one solid solution for this is using something like a soekris mobo<BR>
with one evdo card to connect to the mobile network<BR>
and either using the regular ethernet port or having a second,<BR>
regular wifi card for the users to access it as a gateway to the mobile network,<BR>
some iptables required but certainly not a complex setup,<BR>
<BR>
plugged to i.e. your car, will convert it in a mobile hot spot,<BR>
<BR>
and if you are about 100 feet from your car,<BR>
you can still use a wifi voip phone as your "mobile"<BR>
<BR>
<BR>
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<PRE>
In other words, the same kind of router that you typically get with a
DSL modem at home, but small and mobile.
</PRE>
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<BR>
define mobile,<BR>
<BR>
if you need something really mobile as a phone<BR>
the only device I know off that is capable of this is the openmoko phone<BR>
you can plug it to the phone wireless network and add usb wifi to it for the users,<BR>
<BR>
a caveat though is that you might not want a digital network because they are very slow,<BR>
so the solution is verizon with evdo, or probably still openmoko but you'll need to replicate the usb port,<BR>
do usb to evdo on one,<BR>
and usb to wifi on other,<BR>
<BR>
<BR>
<BR>
<BR>
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<PRE>
It should allow incoming ssh, possibly via a "port forwarding" setup on
the router's 192.168.0.1 address.
I have heard of people with mobile phones that can surf the web, but
they usually are self-contained and don't have twisted pair ports.
I have heard of pcmcia cards for laptops that are cellular modems. This
might be the kind of thing, because then the laptop might be configured
to offer the ethernet to other machines, but it would be bulky. (I also
wonder if nowadays the pcmcia cards are becoming USB cards; this would
help since the equipment we are sending out has rack-mounted computers,
not laptops, hence no pcmcia.)
Are there other gadgets that I have not heard about? Maybe this biggish
cell-phone with an ethernet port really exists?
And I'll buy a beer if your answer includes information on whether these
mobile phone providers have good coverage of very rural "south coast of
Louisiana" and mississippi delta swamplands.
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