Internet Connection Sharing and an IP Nightmare 2

[andrew12]

Hello all,

I'm currently supporting a small charity who have just opened a sub-office (a classroom in a hut, basically) that is not connected to their main office's LAN.

In this sub-office there is a windows 2000 Pro PC acting as an internet connection sharer and a small number of XP PCs. No problem there.

I have been asked if it is possible to configure a couple of xp laptops that normally connect to their main lan to be able to plug in at the sub-office, engage in file sharing and connect to the internet.

The laptops have dhcp allocated ip addresses (from a w2k server in the main office) which I suppose would have to be ditched (registry hack) before plugging in at the sub office.

They would then need a valid ip address to engage in file sharing with other machines in the workgroup (which would need to come from the ICS machine which I understand allocates ip addresses to clients on the network).

My questions are: I know XP is very good at logging on with cached credentials - will it be smart enough to allow log on at the sub-office where there is no domain and pick up an ip address from the ICS machine???

 

[1101001100110101]

yes it should let them login, and if you set to dhcp auto for the lan. it should be smart enough to get the dhcp from the Internet share if you have the setup, without having to change configs or registry. When you plug it in at the other location it will automaticly look for a dhcp address.

if your talking static ips then it will be a little diffrent. you may want to ask in one of the networking forums. probabley get more resonses.

 

[wolluf]

Xp machines should pick up IP address ok (ie, just leave network settings the same - automatic - as ICS machine is also a DHCP server) - so you're intending logging them on with their domain user ids, and hope they'll used cached credentials? Then you want them to participate in filesharing with the workgroup machines? Must admit I don't know if cached domain logons will work when connected to workgroup network (you may need to use local logons on the XP machines). And you may need to use the search for computer facility (at least initially) to find the domain machines from workgroup & vice versa - at least initially - think they'll start appearing in My network places after a while).

I'd just try it with one machine and see what works and what needs tweaking. Hopefully you can get it all connected with minimum changes.

 

[FROGGYJ]

Just thought I would add something to this. I haven't personally tried it, but theoretically it should work. XP is great because you can have your primary tcp/ip settings and then an alternate. So essentially you could just leave the primary to detect automatically so whenever it's around a dhcp server it will pick something up and then as an alternate you could manually configure the ip address range that you have setup in the sub office. Just food for though.

FROGGYJ
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