Lost network after internet and ISA installation

Hello:
I had a nicely runnning Dell PE 2800 with SBS Premium 2003 SP1.
All client computers could see the shares on the server and access
"companyweb" and had access to databases on the server.
That was before I had internet service and hooked up the DSL modem to the
second NIC.
I ran ISA Server 2004 SP2 and set it up as "edge network".

Now I do have internet access from all clients and the server.

Only the server can go to 192.168.16.2 which is the SBS IP and only the
server can access "companyweb".
All client computers can access the internet but they cannot log on to the
Server/Domain Controller.
When I click the server under "My Network Places" nothing happens for a
couple of minutes and then it asks for userid/pw and even the admin logon/pw
does not work.
When I try to log on with a userid that was not previously used on a client
computer I get a "Domain not found" error.
When I go to 192.168.16.2 or "companyweb" from the clients I get a "page
cannot be displayed error".
It looks like to me that the SBS is not responding to any requests from the
internal network.
Is it that ISA Server has locked down the server from access even within the
internal network?
Is it a DNS problem?
Any help is appreciated.
Thanks.

In news:34185F24-BCD3-49DE-A6B7-(E-Mail Removed),
sgunes <(E-Mail Removed)> stated, which I commented on
below:
> Hello:
> I had a nicely runnning Dell PE 2800 with SBS Premium 2003 SP1.
> All client computers could see the shares on the server and access
> "companyweb" and had access to databases on the server.
> That was before I had internet service and hooked up the DSL modem to
> the second NIC.
> I ran ISA Server 2004 SP2 and set it up as "edge network".
>
> Now I do have internet access from all clients and the server.
>
> Only the server can go to 192.168.16.2 which is the SBS IP and only
> the server can access "companyweb".
> All client computers can access the internet but they cannot log on
> to the Server/Domain Controller.
> When I click the server under "My Network Places" nothing happens for
> a couple of minutes and then it asks for userid/pw and even the admin
> logon/pw does not work.
> When I try to log on with a userid that was not previously used on a
> client computer I get a "Domain not found" error.
> When I go to 192.168.16.2 or "companyweb" from the clients I get a
> "page cannot be displayed error".
> It looks like to me that the SBS is not responding to any requests
> from the internal network.
> Is it that ISA Server has locked down the server from access even
> within the internal network?
> Is it a DNS problem?
> Any help is appreciated.
> Thanks.

You'll need to create rules to allow access. ISA by default blocks
connections. You may have also inadvertenly not setup ISA properly and did
not include the internal subnet in your LAT, which I think is probably what
happened. Difficult to tell.

You will be better off posting to the microsoft.public.isa newsgroup for
specific help about ISA. The experts there will be glad to help.

--
Ace

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Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft MVP - Directory Services
Microsoft Certified Trainer

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