Virtual networking issue. Love some tips.

Hi all

We are looking to set up an ESX host with virtualized

instances of our file server, sql server and secondary domain

controller. Basic stuff.

Here, we also have a server

with Openfire installed. Openfire is our enterprise instant messaging

request. To make it super easy for mobile workers use us

maps to an external IP address to the internal IP address of the server. So no need of

launch the VPN to launch and use the client.

We

would like to virtualize this server. It's really really low usage and

It releases a Sun Server nice to use somewhere else.

My questions are:

  • If virtualize us this server, map the external IP address to the IP address of the VNIC to the correct server?

*

If we do this inadvertently expose us our file server, sql server,

and the PDC to attacks from the outside? Why or why not?

I'm really sorry for all the questions. There are so many things to wrap the head around about the time all this. Our concern is that, because the virtual machines share the same physical NETWORK adapter, that somehow someone can exploit the fact that a VM has an external IP address mapped to it to access other servers.

Thanks in advance.

EI

Firstly, welcome to the boards

I think that you would treat this like any other DMZ server.  I don't know how your complete installation is planned out but you have your public IP that is pointed to your firewall, I'm assuming and from there his translated into one IP private in the section of the DMZ of your network.  If this is the case, and for best security practices, you keep your dmz and production traffic unplug the same physical NIC, or less what we are doing.  If you have an esx/esxi host with a map of physical network connection to your dmz switch that goes to your firewall then configure that VM using the portgroup DMZ so there all of its traffic out the physical NETWORK adapter on the side of the demilitarized zone of the network.

E.g. Your IP address public mail server is 67.1.1.1 and that is picked up by your firewall, firewall it translates an internal address of 192.168.3.1, you'd then your IP address inside the VM 192.168.3.1

I hope that makes sense, and I don't know if it will work with your Setup or not...

  • Kyle

Tags: VMware

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