Compuit1
asked on
Mail Servers and VPN for two Networks
I currently have a fully functional SBS 2003 network running ISA 2004 as proxy, VPN access, OWA, Hosted Websites, Intranet and SharePoint Services.
I am in the process of setting up a R&D network with Mail Server and web server which is entirely Linux based to run similar services but on a difference network address. This is simple to achieve if I install a separate DSL line with static IP for the R&D network to access the Internet.
My question is can these services be achieved on the Linux network without the introduction of a second Internet connection and without disturbing the services on the current SBS Network? If so what devices or configuration is required? Please advise on options – Thank you.
I am in the process of setting up a R&D network with Mail Server and web server which is entirely Linux based to run similar services but on a difference network address. This is simple to achieve if I install a separate DSL line with static IP for the R&D network to access the Internet.
My question is can these services be achieved on the Linux network without the introduction of a second Internet connection and without disturbing the services on the current SBS Network? If so what devices or configuration is required? Please advise on options – Thank you.
You could also use your ISA to connect the networks, but if this is for R&D it may be better to not do that so you don't complicate your ISA configuration.
I would something like this
Internet
|
Router --- ISA/LAN
|
Network for Linux
I would something like this
Internet
|
Router --- ISA/LAN
|
Network for Linux
ASKER
Yes the configuration you show is exactly what I have setup. So the problem with two networks – Let’s say mail servers listening on port 25 will fail. Can it be redirected using FQDN? I do not think the SMC Router used in the DMZ can redirect as required. I know having a separate public address for each network will be the solution but before going down that channel I want to be certain. Can you confirm please?
ASKER
Just wondering if some like this could be done:
Internet
|
Router
|
DMZ Multi NIC device (Windows or Linux routing)
| 192.168.10.XXX | 192.168.20.xxx
ISA 2004 Linux Mail - R&D Network abc@bbb.co.nz
SBS 2003 Exch Mail abc@aaa.co.nz
192.168.45.xxx
Production Network
Internet
|
Router
|
DMZ Multi NIC device (Windows or Linux routing)
| 192.168.10.XXX | 192.168.20.xxx
ISA 2004 Linux Mail - R&D Network abc@bbb.co.nz
SBS 2003 Exch Mail abc@aaa.co.nz
192.168.45.xxx
Production Network
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ASKER
OK Chakko - Thank you - You have confirmed my thoughts I will wait a little longer to see if there is another opinion - Then close and assign the points - Thank you.
ASKER
Right no further input. I accept your advice - Thank you.
If you need the Linux stuff to use standard ports (eg SMTP 25) then you will need a different IP address for those services, either get an Internet package with additional IP's or you need another Internet connection
Then for your equipment, it depends on what capabilities/features you have.
I would create another network (or VLAN) for the Linux and in your router setup the new extra Network and routing.