DSL (and internal IP addresses)

[Stephen Cope]

Warn Kitchen wrote:
: Hmm, not sure I understand this, is there an FAQ or something?  meaning I 
: have two (and possibly 3) machines,
: two windows machines(one dual boots slackware) and one macintosh I'd need 
: to notwork on the one connection.  Would the switch hold the
: one routable IP and then the machines have the "martian IP's"?

What do you mean you don't understand it? You've got the answer there!

I'm sure I've done this ASCII art before to explain:

    RFC 1918       +-----------+
  192.168.1.1      | DSL modem |
  192.168.1.2      | /firewall |
  192.168.1.254 ]--+ /gateway  +--[ 123.45.67.89
  192.168.1.13     | /router   |
  192.168.1.46     | /etc      |
                   +-----------+
  Your home                         The Internet

Your ISP gives you the one (1) on the right. That is visible to the world.

You, being the ruler of your own home can assign any addresses you want on
the left hand side. You DSL modem may even come with a DHCP server to help
you dole them out!

Note that x.x.x.254 is usually the gateway, although .1 may be used in its 
place, and .255 is the broadcast address.

In answer to another email, RFC 1918, and also my usage of 'martian' was 
somewhat looser than the original.

-- 
Stephen Cope - http://sdc.org.nz/