Cable Connection Question - Difference?

I have a question about the difference between the following cable
connections on (2) separate, unrelated networks:

Network A = Windows Server Std Edition--(Server has 2 NICs, clients
have static IPs, no DHCP anywhere, NAT configured)--cables are plugged
in as follows:

Internal NIC-plugged into main switch
External NIC-plugged into Linksys Router
Linksys router Internet port plugged into ISP's cable modem
Clients plugged into main switch

Network B = SBS 2000 using ISA Server 2000 Server has 2 NICs, clients
have static IPs, no DHCP anywhere, )--cables are plugged in as follows:

Secondly, please help me verify my cable connections:
Internal NIC-plugged into main switch
External NIC-plugged into main switch
Linksys router Internet port plugged into ISP's cable modem
Linksys router Ethernet port plugged into main switch
Clients plugged into main switch

Basically, can/should Network A be setup the same as Network B??. It
seems if I did that, I had problems with clients connecting. Someone
commented that with Network A, I had created a Back-to-Back DMZ, but I
do not know what that means.

Thanks

A=Good
B=Not good..well not AS good as "A"
Define "problems with clients connecting"

see-

http://www.smallbizserver.net/tabid/...SA-router.aspx

.....my opinion anways.

(E-Mail Removed) wrote:
> I have a question about the difference between the following cable
> connections on (2) separate, unrelated networks:
>
> Network A = Windows Server Std Edition--(Server has 2 NICs, clients
> have static IPs, no DHCP anywhere, NAT configured)--cables are plugged
> in as follows:
>
> Internal NIC-plugged into main switch
> External NIC-plugged into Linksys Router
> Linksys router Internet port plugged into ISP's cable modem
> Clients plugged into main switch
>
> Network B = SBS 2000 using ISA Server 2000 Server has 2 NICs, clients
> have static IPs, no DHCP anywhere, )--cables are plugged in as follows:
>
> Secondly, please help me verify my cable connections:
> Internal NIC-plugged into main switch
> External NIC-plugged into main switch
> Linksys router Internet port plugged into ISP's cable modem
> Linksys router Ethernet port plugged into main switch
> Clients plugged into main switch
>
> Basically, can/should Network A be setup the same as Network B??. It
> seems if I did that, I had problems with clients connecting. Someone
> commented that with Network A, I had created a Back-to-Back DMZ, but I
> do not know what that means.
>
> Thanks

Thank you for replying...

With Network A, no client computer could connect to the Internet, until
I manually assigned them Default Gateway and DNS using Server's NIC#1
IP address.


What connections would you suggest changing in NetworkB since you state
that it is not as good as NetworkA and why would you change it?.

Thanks again
seryozha wrote:
> A=Good
> B=Not good..well not AS good as "A"
> Define "problems with clients connecting"
>
> see-
>
> http://www.smallbizserver.net/tabid/...SA-router.aspx
>
> ....my opinion anways.
>
> (E-Mail Removed) wrote:
> > I have a question about the difference between the following cable
> > connections on (2) separate, unrelated networks:
> >
> > Network A = Windows Server Std Edition--(Server has 2 NICs, clients
> > have static IPs, no DHCP anywhere, NAT configured)--cables are plugged
> > in as follows:
> >
> > Internal NIC-plugged into main switch
> > External NIC-plugged into Linksys Router
> > Linksys router Internet port plugged into ISP's cable modem
> > Clients plugged into main switch
> >
> > Network B = SBS 2000 using ISA Server 2000 Server has 2 NICs, clients
> > have static IPs, no DHCP anywhere, )--cables are plugged in as follows:
> >
> > Secondly, please help me verify my cable connections:
> > Internal NIC-plugged into main switch
> > External NIC-plugged into main switch
> > Linksys router Internet port plugged into ISP's cable modem
> > Linksys router Ethernet port plugged into main switch
> > Clients plugged into main switch
> >
> > Basically, can/should Network A be setup the same as Network B??. It
> > seems if I did that, I had problems with clients connecting. Someone
> > commented that with Network A, I had created a Back-to-Back DMZ, but I
> > do not know what that means.
> >
> > Thanks

I would disagree a little with the other post.
Both are bad.

A is bad because it has a back-to-back DMZ that you don't know why you have
it or how to deal with it. (and I hate DMZs anyway).

B is bad because both the internal and the external segments are going into
the same switch. If you use VLANing to split the Switch into two logical
switches than it is fine, but if not then you need two different switches.

What you *really* need is C
Network C = Windows Server Std Edition--(Server has **1** NIC, clients
have static IPs, no DHCP anywhere, *no* NAT configured, uninstall
RRAS)--cables are plugged
in as follows:
1. External port of the Linksys plugs into ISP's Cable Modem
2. Internal port of Linksys plugs into Main Switch
3. All machines have *single* Nics and plug into the Main Switch or other
Switches linked to the Main Switch.

>> > seems if I did that, I had problems with clients connecting. Someone
>> > commented that with Network A, I had created a Back-to-Back DMZ, but I
>> > do not know what that means.

That was me!


--
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com

The views expressed are my own (as annoying as they are), and not those of
my employer or anyone else associated with me.
-----------------------------------------------------
Understanding the ISA 2004 Access Rule Processing
http://www.isaserver.org/articles/IS...cessRules.html

Troubleshooting Client Authentication on Access Rules in ISA Server 2004
http://download.microsoft.com/downlo...7/ts_rules.doc

Microsoft Internet Security & Acceleration Server: Guidance
http://www.microsoft.com/isaserver/t...dance/2004.asp
http://www.microsoft.com/isaserver/t...dance/2000.asp

Microsoft Internet Security & Acceleration Server: Partners
http://www.microsoft.com/isaserver/partners/default.asp

Deployment Guidelines for ISA Server 2004 Enterprise Edition
http://www.microsoft.com/technet/pro...isaserver.mspx
-----------------------------------------------------





>> (E-Mail Removed) wrote:
>> > I have a question about the difference between the following cable
>> > connections on (2) separate, unrelated networks:
>> >
>> > Network A = Windows Server Std Edition--(Server has 2 NICs, clients
>> > have static IPs, no DHCP anywhere, NAT configured)--cables are plugged
>> > in as follows:
>> >
>> > Internal NIC-plugged into main switch
>> > External NIC-plugged into Linksys Router
>> > Linksys router Internet port plugged into ISP's cable modem
>> > Clients plugged into main switch
>> >
>> > Network B = SBS 2000 using ISA Server 2000 Server has 2 NICs, clients
>> > have static IPs, no DHCP anywhere, )--cables are plugged in as follows:
>> >
>> > Secondly, please help me verify my cable connections:
>> > Internal NIC-plugged into main switch
>> > External NIC-plugged into main switch
>> > Linksys router Internet port plugged into ISP's cable modem
>> > Linksys router Ethernet port plugged into main switch
>> > Clients plugged into main switch
>> >
>> > Basically, can/should Network A be setup the same as Network B??. It
>> > seems if I did that, I had problems with clients connecting. Someone
>> > commented that with Network A, I had created a Back-to-Back DMZ, but I
>> > do not know what that means.
>> >
>> > Thanks
>

"Phillip Windell" <@.> wrote in message
news:(E-Mail Removed)...
> ......... I had created a Back-to-Back DMZ, but I
> do not know what that means.

And that is why you need Network "C".

You need a straight forward design:
1. that works dependably
2. you understand what you have and why every piece is there and what it
does
3. you can troubleshoot it without running up and down the halls in a panic
like a chicken with the their head cut off if something goes wrong.


--
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com

The views expressed are my own (as annoying as they are), and not those of
my employer or anyone else associated with me.
-----------------------------------------------------