Re: Using DHCP with Manual IP

In article <f8n7sm0714@xxxxxxxxxxxxxxxxx>,
J.J. O'Shea <try.not.to@xxxxxxxxxxx> wrote:

On Mon, 30 Jul 2007 20:39:21 -0400, Barry Margolin wrote
(in article <barmar-4C9D44.20385130072007@xxxxxxxxxxxxxxxxxxxxxx>):

I have port forwarding set up on my router to allow me to login to my
Mac from work. When I came home from a vacation, I discovered that my
router had assigned the address that usually goes to my Mac to another
device.

Either change the port forwarding setup or set the DHCP pool so as to exclude
that IP or set up a reservation for that IP just for your Mac.

I did set the DHCP pool to exclude the address I set manually. That's
not the problem.

As far as I can tell, the Linksys doesn't have a way to assign specific
IP's to a MAC address -- that would have been ideal.

And how are you proposing that I change the port forwarding setup so
that it tracks the IP assigned to the Mac? Do you mean that whenever my
Mac's address changes, I should manually reconfigure the router's port
forwarding?



One of the options in the Network preference is "Using DHCP with Manual
IP", which seems like just the right thing. But it doesn't seem to work
to learn the router and DNS addresses. Is this a problem with my router
(Linksys WRT54G) or OSX 10.4.10?

I went to fully manual (using the router's address for DNS), but it
would be nice if I could leave everything else dynamic.



Here's how DHCP works:

I know how DHCP works. I have been an Internet professional for about
20 years. And none of your explanation is at all relevant to my
question.

DHCP can be used to configure a number of different network settings,
including the IP address, default gateway, and DNS servers. Normally
all 3 are configured at the same time. I presume that "Using DHCP with
Manual IP" means that the IP address is configured manually (the
preferences panel allows you to enter it) and the other settings will be
retrieved from the DHCP server (the router). But apparently it doesn't
work like this. And the Help file doesn't seem to mention this setting
at all, it only mentions Manual and DHCP configuration.

--
Barry Margolin, barmar@xxxxxxxxxxxx
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***
*** PLEASE don't copy me on replies, I'll read them in the group ***
.

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