[lug] AARGGG! ADSL and NAT.

Bruce Yelen byelen at atlas.csd.net
Fri Oct 29 09:52:31 MDT 1999

Hi Jason,

You need to configure the NAT (Network Address Translation) on your router
to directect any incoming packets for the port you're using for your X
display.  If you're setting your DISPLAY parm to XXX.XXX.XXX.XXX:0, the
port would be 6000. It's normally the display ID (ie :n) plus 600.
(..xxx:1 would be 6001).



On Thu, 28 Oct 1999, Jason A. Crosswhite wrote:

> Hello all,
> Sorry to bother you all again.  Seems to be a busy day for me and
> computer problems.
> Here's the story:
> I've got an external ADSL modem (Cisco 675) connected to a hub in my
> house, to which me and my room mate's computers are connected.  We use
> NAT and DHCP services over a PPP to USWEST.  Everything is working hunky
> dorey, except for one thing.  I can't figure out how to set the DISPLAY
> environment variable on a unix machine I'm working on in campus so that
> graphics displays on my home machine.
> I guess I just don't understand NAT well enough.  I though that each IP
> in my SOHO network was given as a port for my one real global IP which
> my 675 owns (well on port for each protocol).  I logged onto my 675 and
> did a "show nat", got the IP and some port numbers, but no luck.  Can't
> even telnet in.
> I have to be doing something brain dead, but what?  I'm sure somebody
> must know the answer here.  If its something obvious, and I missed a
> HOWTO somewhere (I looked!), then feel free to beat me over the head.  I
> just want to work from home!!!
> Thank in advance.
> --
> -Jason Crosswhite
> jason at newberry.uoregon.edu
> http://darkwing.uoregon.edu/~jacrossw
> Rm 220, Cascade Building
> University of Oregon
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