[PLUG] Needed: Modern equivalent of a "null-modem cable"

Chuck Hast wchast at gmail.com
Wed Jan 18 23:00:34 UTC 2017


Tomas,
Your last option is the one that I have used forever, I carry a little
router around
with me for that very purpose, works great and do no have to fiddle with NIC
settings.

Richard,
Follow Tomas' recommendation, you will NOT go wrong, and you will not have
to get into setting up static IP's and whatnot. (not that there is anything
to it but
if you have not done it, you may find it tedious, particularly WinXP does
not at
times like to cooperate).

You can find cheap routers in garage sales (I have picked them up for $1)
that
and two cables to connect each computer to the LAN side of the router and
you
are set. Just follow Tomas' recommendations and you will be set.

I used to work on machines that were islands, they were either connected to
a
isolated LAN or nothing, but at times I needed to get into the things for
some
reason, the little router was the solution.

On Wed, Jan 18, 2017 at 2:25 PM, Tom <tomas.kuchta.lists at gmail.com> wrote:

> I have been watching this threat for a while - unsure how to respond to
> such quest and be contributing without writing complete how-to on how
> to use networking wrong way.
> Since you now discovered USB to serial convertors it appears to me
> that:
>   a) You have the resources to purchase two USB-to-serial convertors at
> a cost probably higher than the cheapest network router
>   b) You are set to somehow transfer files over terrible serial port
> speeds between 2 computers - using completely inappropriate technology
> today
>   c) This, originally, networking thread is about to become further
> complicated by USB-to-serial issues with fake FTDI chips destroyed by
> FTDI drivers, or worse ...
> I would love to help you to resolve this -- Here are two possible ways
> to resolve your task:
> 1. Your original request
>   a) Chose two IPs for your computers. I suggest 192.168.1.2 for WinXp
> and 192.168.1.1 for you Linux
>   b) follow this guise for windows setup:
>      https://blog-archive.josephcs.com/setting-up-a-simple-lan-connecti
> on-between-2-pcs/#main_content
>   c) Follow Russell's instruction from this mailing list on how to set
> IP on your Linux PC
>   d) setup SAMBA file sharing on Debian/Ubuntu so that you can copy
> files between the PCs
> 2. How to setup networking properly when you are able to spend a few $$
> on a cheap basic router:
>   a) return the configuration on both (all) your PCs to their default
> network configurations
>   b) get one of these (any) cheap routers. The cost should be roughly
> equivalent to pair of USB-to-serial:
>      $19 - https://www.amazon.com/NETGEAR-Wireless-Router-WNR1000-100NA
> S-N150/dp/B001UI4RTG/ref=sr_1_5?s=pc&ie=UTF8&qid=1484776439&sr=1
> -5&keywords=router
>      $29 - https://www.amazon.com/TP-Link-Wireless-Router-450Mbps-TL-WR
> 940N/dp/B003Y5RYNY/ref=sr_1_3?s=pc&ie=UTF8&qid=1484776439&sr=1
> -3&keywords=router
>      $35 - https://www.amazon.com/Linksys-WRT54GL-Wireless-G-Broadband-
> Router/dp/B000BTL0OA/ref=sr_1_11?s=pc&ie=UTF8&qid=1484776439&sr=1
> -11&keywords=router
>      If you come to some of our Linux meetups - let me know, I will
> give you working old router for free and even throw in a switch so that
> you can connect more than 4 PCs together.
>   c) get two ethernet CAT5e or CAT6 patch cables for each PC. Any patch
> cable should do, but you will need fully populated ones for 1Gb/s
>   d) Plug the PCs to the router's LAN (not the WLAN) ports. Power
> everything up and you should be done with the networking part.
>   e) Find out each PC's IP address assigned by the router:
>       on Windows run: cmd.exe <-- ipconfig (You should see something
> like 192.168.x.y or 10.x.y.z - depending what is the default router
> setup
>       on Debian/Ubuntu run: ip address (look for the IP associated to
> eth0, It should be similar to the IP on your other PC, not the same)
>   e) Using any PC + browser + router's manual - login to the router for
> further seting and configuration
>   f) connect your router to internet if you wish using the WLAN port
>   g) connect more PCs, even Phones and laptops over Wi-Fi
>   h) setup file sharing so that you can copy files between the PCs or
> you can access them directly over the network.
>   i) ASK FOR HELP with your networking setup here
> I understand that you want to learn thus keep repeating the "null
> modem" moniker.
> I would advice you to try to build good network foundation first and
> when you master it - expand you understanding to "null modem" over
> ethernet technology.
> I hope that this summary is helpful, Tomas
> On Wed, 2017-01-18 at 08:43 -0600, Richard Owlett wrote:
> > On 1/14/2017 8:53 AM, Richard Owlett wrote:
> > > I suspect what I'm looking for is ONE 3 ft piece of terminated
> > > Cat6 cable ;)
> >
> > Actually not <*GRIN*>
> > Seems it dawned on someone that the "U" in "USB" wasn't really
> > universal.
> > There is now a "null modem cable".
> > Data sheet
> > http://www.mouser.com/ds/2/163/DS_USBNMC-5030.pdf
> >
> > I'll be checking local suppliers while continuing to pursue the
> > LAN option - it's a learning experience.
> >
> >
> >
> > _______________________________________________
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> > PLUG at lists.pdxlinux.org
> > http://lists.pdxlinux.org/mailman/listinfo/plug
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>



-- 

Chuck Hast  -- KP4DJT --
Glass, five thousand years of history and getting better.
The only container material that the USDA gives blanket approval on.



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