This is just an example SSH public key showing how to restrict the SSH
session. Thus preventing hackers from
indiana j0wning your computer.
(Note: I manually added in line breaks; originally the text was on a
single line)
What is it?
It's a way in which you can setup a dynamic DNS record for your home router.
"But Rob, my router can already be configured to update
DynDNS.org or
TZO.org with my IP address -- Why would I want to use this thing?"
Well, because (1) you want your router's IP to be associated with a domain
you control, (2) you don't want to pay a service fee, or (3) because it's
cool to do it yourself.
Why did I do this?
I wrote this thing for my particular setup, so it doesn't solve the generic
case by any stretch of the imagination. I'm sure a few minutes google-ing
will provide you with some project out there that is dedicated to
providing dynamic DNS for the 'generic' case (if there is such a thing).
Unfortuntely, updating my NS records is very specific to how the
HCoop DNS server is configured. So instead
of getting my google on, and getting my
modifications-to-an-exisiting-project on I decided it would be quicker to
just do it myself.
How does it work?
Alright lets start off by clearly defining a couple of terms.
Client - The UNIX/Linux computer on your home network that
is behind a Linksys router.
Server - The UNIX/Linux computer that controls the NS
records for your domain(s).
Requirements
First and foremost you control your own NS records for a
second-level domain (ie. digitalgeek.net, sideprojects.org).
You have shell, and ssh, access to your server that can update your NS
records.
You have a UNIX/Linux box behind your router.
The box behind your router needs to have bash, ssh, awk/sed, cron,
and lynx installed. (Most likely all but lynx will be installed by
default)
The box with the NS record access needs to have bash, ssh(d), and
awk/sed installed.
I wrote the client side script to pull the current IP data from my
Linksys router. You need to either have a Linksys router or be able to
modify some bash scripts. The scripts are simple and should be easy to
follow. If you decide to modify it shoot me an email and let me know what
you had to do.
I wrote the server side script to update the NS record for a
system configured with domtool (This is HCoop specific). So again, you
need to either be an HCoop member or be able to modify some simple bash
scripts.
**Incomplete**
Will update shortly! (as if anyone is
desperate for the solution) -Nov 12
