Penetration Testing mailing list archives
Re: ESX Vmware Physically connected to different segments
From: Johnny Tsao <jtsao () calstate edu>
Date: Fri, 25 Jan 2008 12:25:21 -0800
I'm very interested in hearing some recommended and best practice architecture regarding virtualized servers. As virtualization network/server nodes becomes more popular it also introduce challenges for our institution to revisit the security domains. How are you guys separating the security domains? How are the security domains access common backend, for ex: backup, data warehousing, etc. TIA, -JT *********************************** Johnny Tsao, CCIE No. 8759, CISSP Information Security Engineer Technology Infrastructure Services -Strategic Engineering & Architecture (SEA) California State University Tel: 562.346.2218 * Fax: 562.346.2223 Email: jtsao () calstate edu *********************************** E-MAIL CONFIDENTIALITY NOTICE: The contents of this e-mail message and any attachments are intended solely for the addressee(s) and may contain confidential and/or legally privileged information. If you are not the intended recipient of this message or if this message has been addressed to you in error, please immediately alert the sender by reply e-mail and then delete this message and any attachments. If you are not the intended recipient, you are notified that any use, dissemination, distribution, copying, or storage of this message or any attachment is strictly prohibited. On 1/25/08 11:41 AM, "Kurt Buff" <kurt.buff () gmail com> wrote:
On Jan 24, 2008 1:41 PM, Albert R. Campa <abcampa () gmail com> wrote:We have some admins setting up some VMs on an ESX server and they have the idea of setting up 1host server with multiple VMs and on some of these VMs they want physical NICs connected to our main LAN and other VMs they want physical wires connected to a DMZ lan. Normally this would be almost bridging the two networks and bad practice overall. An explanation from an SA is that virtual switches are used on the ESX host and this seperates the physical connection to our main LAN and this DMZ lan. This does not sound like good practice but is there documentation to back that up or in your experience have you been able to exploit this type of configuration?As long as it is set up correctly I think this would be fine. However, part of "correctly", AFAIAC, is that both subnets are in the same security domain - that is, if one is trusted, the other must be as well. I would *never* put, for instance, a guest OS in a DMZ subnet if the other guests are in a trusted subnet. Kurt ------------------------------------------------------------------------ This list is sponsored by: Cenzic Need to secure your web apps NOW? Cenzic finds more, "real" vulnerabilities fast. Click to try it, buy it or download a solution FREE today! http://www.cenzic.com/downloads ------------------------------------------------------------------------
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Current thread:
- Re: ESX Vmware Physically connected to different segments, (continued)
- Re: ESX Vmware Physically connected to different segments David M. Zendzian (Jan 29)
- Re: ESX Vmware Physically connected to different segments Kurt Buff (Jan 29)
- Re: ESX Vmware Physically connected to different segments David M. Zendzian (Jan 29)
- Re: ESX Vmware Physically connected to different segments Dave Howe (Jan 30)
- Re: ESX Vmware Physically connected to different segments Kurt Buff (Jan 28)
- Re: ESX Vmware Physically connected to different segments David M. Zendzian (Jan 29)
- RE: ESX Vmware Physically connected to different segments Loupe, Jeffrey J (Jan 29)
- Re: ESX Vmware Physically connected to different segments Kurt Buff (Jan 29)
- RE: ESX Vmware Physically connected to different segments Loupe, Jeffrey J (Jan 29)
- Re: ESX Vmware Physically connected to different segments Enno Rey (Jan 29)
- RE: ESX Vmware Physically connected to different segments Jeff Norem (Jan 28)