SBS Server in Serviced Office

Hi,

I have a client that is moving into a new serviced office, they get their broadband included.

My concern is that their current ip range is 192.168.0.1 and the serviced office is allocating them with an ip range of 10.248.203.66 / 10.248.203.77

Their current SBS server is running exchange and the ip address of this server is 192.168.0.2.

In the past I have tried changing the IP range of a test server and the exchange crashed and wouldn't work with a new IP range, i.e. 192.168.1.2

So for that reason I am not going to change the IP address of the server to the 10.248.203.66 IP range.

A solution I feel is to purchase an 8 port un-managed switch and install this within the comms room - I can then port the CAT5 points in their office into this switch and away we go. (they will then patch a cabling into this switch of ours to give internet access)

Can anyone see any issues with this setup?

thanks
R
ryank85Asked:
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Will SzymkowskiSenior Solution ArchitectCommented:
They are providing internal IP range? You can simply put a router or switch as you have mentioned, create a vlan on the switch for whatever IP range you need (192.168.0.x) and have both vlans  (192.168.0 and 10.248.203) communicate to each other.

You can also do this with a router and have the router act as a bridge and have an internal IP address block as needed.
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ryank85Author Commented:
Thanks for this. Would it not work by using an un managed switch in the comms room and just plugging the ports on the patch panel into that?

The server will be on this mini network so it will manage the dns and dhcp as normal.

Thanks again
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Simon Butler (Sembee)ConsultantCommented:
How are they going to get their email if they are being provided with a private IP range? Normally a service office would provide a single static IP address and then leave it to the client to make the arrangements for IP address assignment.
Do they know a server is coming along? It could be they are presuming no server, so a private range is being used.

Simon.
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ryank85Author Commented:
Hi Simon

Yes the know about the server.

The SBS Server with Exchange will be on the same mini network, this will manage the DHCP for the client machines.

The network will be as follows:

6x devices within the office, 1x Server and 5x PCS - each device will be connected into a CAT5 socket on the wall - then the number of the socket on the patch panel will then be connected into the small 8 port hub

So within this hub I will have 1x server, 5x PCs and the network cable from their internet to give the internet to all my devices.

When you mean static ip address, if you mean for the internet we have one static ip so we can use OWA and VPN's etc from outside the office

Does that make sense, it's hard to explain in writing.

thanks
R
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Simon Butler (Sembee)ConsultantCommented:
10.x.x.x is not an internet routable IP address.
Therefore if you want to receieve email etc then you need one of those.
If they are giving you one as well, then you are probably going to be double-NAT (external IP address, NAT to 10.x.x.x, NAT to your own 192.168.x.x range). That can cause problems with some applications and I wouldn't advise doing it.

Ask the shared office provider if they can route the external pupic IP address straight to your router.

You must have a router - if you don't then your server will be doing DHCP to the entire network, not just your five machines. The 8 port switch is not the boundary.

Simon.
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Will SzymkowskiSenior Solution ArchitectCommented:
Also as Simon had said double NAT will be required. Not recommended but required. Also you cannot simply plug an unmanaged switch and assume both internal IP's are going to communicate. They are on different networks so unless you have some sort of VLAN's created to forward traffic from one to the other they will not communicate. You could also do this with a router as well.
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ryank85Author Commented:
Hi Guys

I understand about the public ip address - the serviced office are finding this out for me

With regards to the Router, could I just connect this to the 8 port hub?

As the internet is coming from the serviced office I guess I can leave the adsl username and password blank?

Sorry I have never done anything like this before so i need to make sure everything is right before the office move.

Thanks again for all your advice so far
R
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Simon Butler (Sembee)ConsultantCommented:
You will not be able to use an ADSL router. You will need a network router, something designed for cable networks, or something that can support multiple types of internet connections like the Draytek Vigor series.
You would then connect the 8 port switch (highly unlikely to be a hub unless it is 10 years old) to that router.

Simon.
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ryank85Author Commented:
Hi Simon

No problem, I know Draytek's - I will purchase one of those and see what I can sort.

thanks again
R
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compdigit44Commented:
You many want to even look into a smaller Sonicwall firewall/router to place in-between your ISP connection on internal reources..

http://www.sonicwall.com/us/en/products/1954.html
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