Need help with Small Business Server 2000 & sharing DSL modem on network

Post by **FlyingPenguin** » Fri Feb 08, 2002 8:54 pm

I'm new to SBS 2000 and I want to share a DSL connection via the server. Just from doing a bit of online research I've found this can be full of pitfalls.

Wondering if any of you guys have done this before, or can point me to a walkthru or any good resource sites.

I've found it's nowhere near as simple as you would set it up on, say, Win2K Pro - just sharing the connection via ICS doesn't work.

Running Small Business Server 2000 (everything but the SQL server is installed), we've got two Nics installed.

I'm going to use a Linksys DSL router between the modem and the 2nd NIC on the server just to avoid having to install the crap WinPOET software on the server - letting the router handle the PPOE logon crap.

I've done a bit of research on the newsgroups and found that for starters I need to use two diffferent subnet masks on the two NICs, and I need to disable DHCP on the router or I'll have problems.

Any advise appreciated.

Thanks....

DocSilly · Post by **DocSilly** » Sat Feb 09, 2002 10:29 am

You don't need WinPOET for the PPPOE stuff, I prefer RASPPPOE, works just fine under Win2000 and is free.
You can download it from http://user.cs.tu-berlin.de/~normanb/ , it includes a readme or check it online http://user.cs.tu-berlin.de/~normanb/README2K.HTM . RASPPPOE will create a dialup connection for your DSL and you should be able to use ICS on that one.

I've done a bit of research on the newsgroups and found that for starters I need to use two diffferent subnet masks on the two NICs, and I need to disable DHCP on the router or I'll have problems.

Correct, I use 10.0.0.168 for DSL-NIC and 192.168.x.x for my LAN-NIC.
http://support.microsoft.com/default.as ... us;Q250603 explains why you can run into probs with running ICS and DHCP services on the Win2000 server.
btw, you could even make ICS with DSL work using only one NIC

This should work ... as long as you don't need the DHCP server on the SBS ...

You would have to use the DSL router (without DHCP) in case you need DHCP server on SBS (which pretty much excludes ICS) and some proxy software like http://www.analogx.com/contents/downloa ... /proxy.htm but that would take a lil more tweaking to make it work.
This might be helpful as well http://support.microsoft.com/default.as ... us;Q216238

No, I don't know SBS, so this is all pretty much theory. I do have my Linuxbox running as DSL-Router, firewall and DHCP server with a mix of static IPs and available IPs for additional computers.

Post by **FlyingPenguin** » Sat Feb 09, 2002 6:17 pm

That's the rub - the network is setup for DHCP and the server is providing it right now. Don't want to change that if I can help it.

Thanks for the info, DOC. I'll wade through it.

Anyone out there actually set this up under SBS2K?

I'm tempted to just put the router on the network, let it generate DHCP and disable DHCP on the server which is what I normally do on an NT Server network, but I'm wondering if SBS2K will have a problem with that.

DocSilly · Post by **DocSilly** » Sat Feb 09, 2002 6:38 pm

Gimme 4 more months and I might be able to answer your questions from a viewpoint of a Win2000 MCSE

bluewhale · Post by **bluewhale** » Sat Feb 09, 2002 7:19 pm

1: small thing: the first thing MS asks you should you be willing to shell out $250 for support is 'do you have two NIC's in the server?'... Dual homing causes them all sorts of problems, did so for NT4 as well.

2: If you have less than 10 PC's why not use static IP's? DHCP just adds something else to go wrong with the network access. And how often do we change our ISP's that we would need to reset all the systems on the LAN?

3: You can go to MS's newsgroup site: apparently they allow everybody in now. ( used to be only resellers and solution providers ) They aren't always great about answering but they have been of help to me in the past. they are at http://www.microsoft.com/technet/newsgr ... mepage.asp

Good luck!

Paul

Post by **FlyingPenguin** » Sat Feb 09, 2002 7:32 pm

It's an existing system and their IT tech in the main office prefers to use DHCP. It's actually 14 PCs so DHCP is a blessing for them.

Thanks for the Tech link!

That RASPPPOE app looks like might be the way to go, Doc. Since it seems like a regular dialup to the server, I should just be able to use the Internet Conenction Wizard in SBS2K and set it up like I'm sharing a dialup.

Might try that. Still researching.