How to check my IP???

[Bill Campbell]

On Sat, Dec 10, 2005, Tony Alfrey wrote:
>Bill Campbell wrote:
>>As Kurt and other explained, your Airport box gets an IP from
>>your cable provider which is visible to the outside world, and is
>>what it uses to send/receive IP packets to the 'Net.  The Airport
>>has a private set of IP addresses in the 10.0.1.x range, and
>>assigns private IP addresses from that using the DHCP protocol.
>>
>>I haven't used any of the Airport boxes, but I assume that they
>>have a web-based configuration utility that will show you the
>>range of IP addresses assigned by DHCP, and other configuration
>>parameters for the WAN (Wide Area Network, aka Internet) side of
>>the box.
>
>Yes.  Very idiot-proof.

The biggest problems I've had with Apples is that I have far too much Unix
knowledge so forget that there is probably a very easy way to do something
(even though my definition of easy for most things is simple to edit an
/etc/fstab file or some such :-).

I remember my first encounter with a Mac about 20 years ago where I
couldn't figure out how to eject the floppy.  I certainly wouldn't have
thought of dragging the icon to the trash.

On the other hand, I'm getting better at it since about 95+% of my desktop
time has been on OS X since I replaced my 450MhZ G4 with a Mac Mini running
Tiger.  I still spend most my time in xterms, read mail with mutt, etc.,
but I rarely switch to my Linux desktops since figuring out how to zoom the
screen using Universal Access under System Preferences.

>>The WAN ip address of the Airport is assigned a public address by
>>Comcast using DHCP.  Other broadband providers may use different
>>methods which the broadband provider should be able to explain.
>>
>>If you have boxes that you want to have on fixed IP addresses on
>>the 10.0.1.x private side (printers or whatever where you you don't
>>want their IP address to change), you should look at the range of
>>IP addresses the Airport is assigning via DHCP, and assign the
>>fixed IP addresses outside of that range.  Make sure that you
>>don't assign anything to the Airport's address, probably the
>>lowest address, 10.0.1.1.
>
>It's interesting but the Apple Airport box won't let me assign fixed 
>addresses (even within a range of 10.0.1.x ) on the Apple side if I 
>don't have a fixed IP address on the cable side.
>In other words:
>Cable (WAN) Side      Apple Side
>Static                Static, DHCP with NAT or DHCP without NAT
>Dynamic               DHCP with NAT only

Does that prevent you from assigning a fixed IP on Apple clients using
their Airport cards?  I've never done anything with wireless on Macs since
my laptop's an ancient IBM ThinkPad 600 running Linux, and all our desktop
machines here connect with 10/100 cables.

Bill
--
INTERNET:   bill at Celestial.COM  Bill Campbell; Celestial Systems, Inc.
UUCP:               camco!bill  PO Box 820; 6641 E. Mercer Way
FAX:            (206) 232-9186  Mercer Island, WA 98040-0820; (206) 236-1676
URL: http://www.celestial.com/

If you think health care is expensive now, wait until you see what it coses
when it's free -- P.J. O'Rourke