Re: Multiple network interfaces, different network names

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From: Feico de Boer (mynews_at_gmxpro.net)
Date: 02/17/04 

Date: 17 Feb 2004 08:59:01 GMT

Chuck <none@example.net> wrote in
news:4fv130h7a19ct0eamrfjmqqn3asb85g3b9@4ax.com:

> On 16 Feb 2004 13:57:11 GMT, Feico de Boer <mynews@gmxpro.net> wrote:
>
>>Hello folks,
>>
>>A while ago I didn't get an answer to the following. Let's try again
>>...
>>
>>The following issue, at least I think it is, puzzles me for a while
>>now. I've been thinking about it and think it is not possible in
>>Windows (XP) but it won't harm to ask.
>>
>>What I want is the following.
>>
>>At home I have a cable internet connection (@Home Netherlands) and for
>>some (likely technical) reason the want me to have the computer name
>>set to a name they provide. Ok, works fine for my home computer
>>because there the name does not really mean anything.
>>
>>However, occasionally I would like to use the connection for my laptop
>>from work as well. I want the connection to set up a VPN connection to
>>
>>the office. Fine, the computer name now does mean something because it
>>identifies my laptop on the office network and I must keep the name
>>(or I will loose my computer account and logon possibility).
>>
>>The problem, with the wrong computer name I cannot get a DHCP lease on
>>the @Home network.
>>
>>Wouldn't it be nice if you could specify per adapter what hostname (or
>>network name whatever you like) to use by the DHCP client when it puts
>>the request on the network. That way it would be possible for me to
>>use on connection for the office network and reserve the other for the
>>cable internet connection. Another benefit, I can enable firewall for
>>the internet connect and leave it off (as disired) for the office
>>connection.
>>
>>Actually, and maybe I should not say it here, but the configuration
>>described above is no problem under Linux (oops, ouch, this is a
>>Microsoft group, no flame war intended).
>>

> I find it very interesting that @Home / Netherlands assigns you a
> computer name.
>
> Is it possible that you're confusing computer name with account name?
> Generally, with cable broadband, you power up the cable modem with a
> computer (or router) attached, and the cable modem picks up the name
> (usually the MAC address) of the computer or router. Most routers
> currently offer you MAC address spoofing so to not require resetting
> the cable modem when adding or changing the router.
>
> Some broadband requires that you authenticate with an account name /
> password. This is generally a DSL authentication; cable usually
> authenticates by MAC address.
>
> I have not heard of cable modem services requiring a specific computer
> name. Can you please provide some detail how this is specified.

I to wonder why it is actually needed. However, if I don't enter the
computername (or is it networkname ?) my ISP supplies, I won't get a DHCP
lease. I actually tried and it just fails. If I enter the computername and
reboot, I get a lease just as expected.

Same thing under Linux, my hostname is different from the networkname.
Without further configuration, getting a DHCP lease fails. However, with
Linux (I believe the command used is 'pump') you can specify what
networkname to use for that connection. If I use the ISP specified name if
works like a charm.

The Windows DHCP client only seems to be able to pass the computername as
networkname. I just could not find a way have it do something different.
Now this is not so much a problem for my home computer, just give the
stupid thing the name the ISP wants and it is ok.

However, as mentioned above. If I want to use the connection for my laptop
I use at work I'm lost. It has the wrong name and I don't want to change it
because I will lose my computer account and cannot logon to the office
network anymore (without resetting the account etecetera).

I would use the connecting to VPN into the office network and for that I
need a connection directly to the modem. Using ICS through my home
computer, VPN fails due to the NAT thingy in between.

Regards,
Feico

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