Re: OpenBSD firewalls as virtual machine ?

2007-09-24 Thread David Gwynne
On 21/09/2007, at 11:09 AM, Josh wrote: Hello there. We have a bunch of obsd firewalls, 8 at the moment, all working nice and so forth. But we need to add about another 4 in there for new connections and networks, which means more machines to find room for. So basically I have been asked

Re: OpenBSD firewalls as virtual machine ?

2007-09-24 Thread Die Gestalt
Can someone please inform me if this is a really bad idea or not, ideally with some nice reasoning? Hi Josh, VM is great and I use it a lot for test and development. It's a marvellous tool. I also think it's very good to make virtual web/ftp/whatever servers, it eases maintenance and add a

Re: OpenBSD firewalls as virtual machine ?

2007-09-22 Thread Henning Brauer
* Luca Corti [EMAIL PROTECTED] [2007-09-21 18:34]: On Fri, 2007-09-21 at 10:52 -0400, Douglas A. Tutty wrote: I don't understand the logic of having multiple firewalls on one box. If one box can handle the throughput requirements of all the NICs, why not just one big firewall?

Re: OpenBSD firewalls as virtual machine ?

2007-09-22 Thread Nick Holland
Douglas A. Tutty wrote: ... Hi Nick. I understand your reasons. To me they look like reasons for separate firewalls on separate boxes. In the scenarios you mention, would you put separate firewalls on one machine? That's where you are supposed to 1) recognize that my mysteriously

Re: OpenBSD firewalls as virtual machine ?

2007-09-22 Thread Douglas A. Tutty
On Sat, Sep 22, 2007 at 10:53:05AM -0400, Nick Holland wrote: Douglas A. Tutty wrote: ... Hi Nick. I understand your reasons. To me they look like reasons for separate firewalls on separate boxes. In the scenarios you mention, would you put separate firewalls on one machine?

Re: OpenBSD firewalls as virtual machine ?

2007-09-22 Thread ttw+bsd
On 22.09-02:06, Luca Corti wrote: [ ... ] We are talking about OpenBSD here, and support for VRF is not there. That may change faster then you expect These are great news. If the implementation will allow to assign interfaces to different VRFs it would solve the virtual router/firewall

Re: OpenBSD firewalls as virtual machine ?

2007-09-22 Thread Luca Corti
On Sat, 2007-09-22 at 22:50 +, [EMAIL PROTECTED] wrote: i have a feeling that the funds currently available for your virtualisation project would improve the quality and delivery of these requirements. If I had such project and funds I'd certainly contribute. In the meantime I have assigned

Re: OpenBSD firewalls as virtual machine ?

2007-09-22 Thread Darren Spruell
On 9/20/07, Nick Holland [EMAIL PROTECTED] wrote: Read this: http://advosys.ca/viewpoints/2007/04/fuzzing-virtual-machines/ Read the paper linked there as well. Always good to go back to original source material. Anyone who told you VM technology and security had anything to do with each

Re: OpenBSD firewalls as virtual machine ?

2007-09-22 Thread Eduardo Tongson
Check out the HP c-Class BladeSystems offerings. It is sad that HP is marketing it with virtualization via Vmware. Just disregard the vmware affair. On 9/21/07, Josh [EMAIL PROTECTED] wrote: Hello there. We have a bunch of obsd firewalls, 8 at the moment, all working nice and so forth. But we

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Darren Spruell
On 9/20/07, Nick Holland [EMAIL PROTECTED] wrote: Can someone please inform me if this is a really bad idea or not, ideally with some nice reasoning? Cheers, Josh Read this: http://advosys.ca/viewpoints/2007/04/fuzzing-virtual-machines/ Read the paper linked there as well.

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Craig Skinner
Darren Spruell wrote: On 9/20/07, Nick Holland [EMAIL PROTECTED] wrote: Can someone please inform me if this is a really bad idea or not, ideally with some nice reasoning? Anyone who told you VM technology and security had anything to do with each other was full of doo-doo. I'll echo

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Kent Watsen
Some commercial firewalls (i.e. Juniper/NetScreen ScreenOS-based gear) have been offering virtual-systems for years now. I think the negative comments received here may be appropriate when sharing the system with non-secure guest OSs, but it seems that it might be alright if its nothing but

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Scott Wells
It sounds to me like the comments here are largely appropriate, virtualizing firewalls in the limited context that has been explained probably isn't a real good idea...at least due to perceived load. Additionally, if there are that many fireuwalls being ran, instead of numerous interfaces in

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Tony Sarendal
On 9/21/07, Kent Watsen [EMAIL PROTECTED] wrote: Some commercial firewalls (i.e. Juniper/NetScreen ScreenOS-based gear) have been offering virtual-systems for years now. I think the negative comments received here may be appropriate when sharing the system with non-secure guest OSs, but it

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Darren Spruell
On 9/21/07, Scott Wells [EMAIL PROTECTED] wrote: However, I don't fully agree with the sentiment that running a firewall in a virtual machine (let's be specific, VMWare ESX) guest environment. I'm running my firewall on a ESX 3.0.2 guest, and it works perfectly fine. That being said, you have

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Douglas A. Tutty
Josh wrote: Hello there. We have a bunch of obsd firewalls, 8 at the moment, all working nice and so forth. But we need to add about another 4 in there for new connections and networks, which means more machines to find room for. So basically I have been asked to investigate running

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Craig Skinner
Darren Spruell wrote: At least in a traditional non-virtualized firewall model, the attacker would have to pull out real exploits and attack real (secured) services to compromise the firewall, and it wouldn't fall at the same time as the other hosts. Yes, these kinds of of flaws have (so far)

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Luca Corti
On Fri, 2007-09-21 at 10:52 -0400, Douglas A. Tutty wrote: I don't understand the logic of having multiple firewalls on one box. If one box can handle the throughput requirements of all the NICs, why not just one big firewall? Overlapping IP address space. ciao Luca

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread bofh
That's why god created competant network admins and NAT. On 9/21/07, Luca Corti [EMAIL PROTECTED] wrote: On Fri, 2007-09-21 at 10:52 -0400, Douglas A. Tutty wrote: I don't understand the logic of having multiple firewalls on one box. If one box can handle the throughput requirements of

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Stuart Henderson
On 2007/09/21 14:29, bofh wrote: That's why god created competant network admins and NAT. And VRF.

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Ted Unangst
On 9/21/07, Darren Spruell [EMAIL PROTECTED] wrote: Here's an entirely realistic scenario at this point: - Administrator pays loads of money for VMware ESX; for better ROI, he intends to replace several systems on the network with one big system running a number of VMs. Maybe there is a full

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Luca Corti
On Fri, 2007-09-21 at 20:51 +0100, Stuart Henderson wrote: On 2007/09/21 14:29, bofh wrote: That's why god created competant network admins and NAT. And VRF. We are talking about OpenBSD here, and support for VRF is not there. ciao Luca

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Luca Corti
On Fri, 2007-09-21 at 14:29 -0500, bofh wrote: That's why god created competant network admins and NAT. You are not always in control of all things. Powerful technology is about choice, not about one absolute right way. BTW, NAT sucks. ciao Luca

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Claudio Jeker
On Fri, Sep 21, 2007 at 11:16:37PM +0200, Luca Corti wrote: On Fri, 2007-09-21 at 20:51 +0100, Stuart Henderson wrote: On 2007/09/21 14:29, bofh wrote: That's why god created competant network admins and NAT. And VRF. We are talking about OpenBSD here, and support for VRF is not there.

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Tony Sarendal
On 9/21/07, Claudio Jeker [EMAIL PROTECTED] wrote: On Fri, Sep 21, 2007 at 11:16:37PM +0200, Luca Corti wrote: On Fri, 2007-09-21 at 20:51 +0100, Stuart Henderson wrote: On 2007/09/21 14:29, bofh wrote: That's why god created competant network admins and NAT. And VRF. We are

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Bryan Irvine
On 9/20/07, Josh [EMAIL PROTECTED] wrote: Hello there. We have a bunch of obsd firewalls, 8 at the moment, all working nice and so forth. But we need to add about another 4 in there for new connections and networks, which means more machines to find room for. So basically I have been

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Luca Corti
On Sat, 2007-09-22 at 00:34 +0200, Claudio Jeker wrote: We are talking about OpenBSD here, and support for VRF is not there. That may change faster then you expect These are great news. If the implementation will allow to assign interfaces to different VRFs it would solve the virtual

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread user
Douglas A. Tutty wrote: ... I don't understand the logic of having multiple firewalls on one box. If one box can handle the throughput requirements of all the NICs, why not just one big firewall? There are lots of places where multiple firewalls are better than a single firewall. If one

Re: OpenBSD firewalls as virtual machine ?

2007-09-21 Thread Douglas A. Tutty
On Fri, Sep 21, 2007 at 11:12:10PM -0400, [EMAIL PROTECTED] wrote: Douglas A. Tutty wrote: ... I don't understand the logic of having multiple firewalls on one box. If one box can handle the throughput requirements of all the NICs, why not just one big firewall? There are lots of places

OpenBSD firewalls as virtual machine ?

2007-09-20 Thread Josh
Hello there. We have a bunch of obsd firewalls, 8 at the moment, all working nice and so forth. But we need to add about another 4 in there for new connections and networks, which means more machines to find room for. So basically I have been asked to investigate running all these firewalls

Re: OpenBSD firewalls as virtual machine ?

2007-09-20 Thread Jason Dixon
On Sep 20, 2007, at 9:09 PM, Josh wrote: Hello there. We have a bunch of obsd firewalls, 8 at the moment, all working nice and so forth. But we need to add about another 4 in there for new connections and networks, which means more machines to find room for. So basically I have been

Re: OpenBSD firewalls as virtual machine ?

2007-09-20 Thread Nick Holland
Josh wrote: Hello there. We have a bunch of obsd firewalls, 8 at the moment, all working nice and so forth. But we need to add about another 4 in there for new connections and networks, which means more machines to find room for. So basically I have been asked to investigate running

Re: OpenBSD firewalls as virtual machine ?

2007-09-20 Thread bofh
On 9/20/07, Jason Dixon [EMAIL PROTECTED] wrote: On Sep 20, 2007, at 9:09 PM, Josh wrote: Can someone please inform me if this is a really bad idea or not, ideally with some nice reasoning? What type of throughput is required between each segment? If you've been around here much, you've

Re: OpenBSD firewalls as virtual machine ?

2007-09-20 Thread Jason Dixon
On Sep 20, 2007, at 9:53 PM, bofh wrote: On 9/20/07, Jason Dixon [EMAIL PROTECTED] wrote: On Sep 20, 2007, at 9:09 PM, Josh wrote: Can someone please inform me if this is a really bad idea or not, ideally with some nice reasoning? What type of throughput is required between each segment?