Setting up separate network question

2008-03-17 Thread Labitt, Bruce
I've got to set up a secondary network on my Centos computer. I need to be able to contact the internet from my secondary network computers. However, I really don't want the outside network to get into my secondary network. I have a high speed network connecting a cluster of computers. The

Re: Linux and Sound

2008-03-17 Thread Greg Rundlett
On Fri, Mar 14, 2008 at 9:39 AM, Ted Roche [EMAIL PROTECTED] wrote: Linux and Sound might be too over-arching a presentation topic, but it might be fun if we have someone in the group (or perhaps at a nearby vendor of Linux distributions, hint, hint) who has an understanding of the depth and

Re: Setting up separate network question

2008-03-17 Thread Ben Scott
On Mon, Mar 17, 2008 at 10:55 AM, Labitt, Bruce [EMAIL PROTECTED] wrote: I just want to ask the list if I've got this right. What you describe sounds like it will work, for most definitions of work. Is this benign to the outside network? It depends on what you mean by benign. I presume

RE: Setting up separate network question

2008-03-17 Thread Labitt, Bruce
I don't want to violate corporate policy. I do want to get my job done. It involves putting a cluster together for scientific computations. IT should be an enabler, correct? I spoke with one of our linux guys and he deferred to the network folks. My linux guy said this (ip masquerade) used to

Re: Setting up separate network question

2008-03-17 Thread Tom Buskey
On Mon, Mar 17, 2008 at 12:46 PM, Labitt, Bruce [EMAIL PROTECTED] wrote: I don't want to violate corporate policy. I do want to get my job done. It involves putting a cluster together for scientific computations. IT should be an enabler, correct? It depends on the IT dept and the company

Re: Setting up separate network question

2008-03-17 Thread Kevin D. Clark
Labitt, Bruce writes: I've got to set up a secondary network on my Centos computer. I need to be able to contact the internet from my secondary network computers. However, I really don't want the outside network to get into my secondary network. I have a high speed network connecting a

Re: Setting up separate network question

2008-03-17 Thread Ben Scott
On Mon, Mar 17, 2008 at 12:46 PM, Labitt, Bruce [EMAIL PROTECTED] wrote: IT should be an enabler, correct? Should be. Isn't always. Randall Schwartz ended up with a felony conviction, a few $100K in fines, and facing jail time for doing what (he claimed) was just part of his job at Intel.

Re: Setting up separate network question

2008-03-17 Thread Ben Scott
On 17 Mar 2008 13:33:59 -0400, Kevin D. Clark [EMAIL PROTECTED] wrote: I think that the easiest way to setup a cluster in the manner that you describe would be to ignore ipmasq, let the nodes in your cluster get their eth0 IP addresses via DHCP, and just statically assign some private IP

RE: Setting up separate network question

2008-03-17 Thread Labitt, Bruce
I hear you. That is why I'm going slow on this. Big companies take this (and rightly so,) seriously. My fave network guy is in tomorrow. Hopefully I can get something resolved. Bruce -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ben Scott Sent:

Re: Setting up separate network question

2008-03-17 Thread Kevin D. Clark
Ben Scott writes: I'm not following the above. Where is the DHCP server for his cluster coming from? Somewhere on the corporate network, connected to via eth0. And what good does having private addresses on his node's eth1 interface do? These help ensure that his cluster traffic

Re: Setting up separate network question

2008-03-17 Thread Ben Scott
On 17 Mar 2008 18:28:31 -0400, Kevin D. Clark [EMAIL PROTECTED] wrote: I'm not following the above. Where is the DHCP server for his cluster coming from? Somewhere on the corporate network, connected to via eth0. Hmmm. I expect you're not talking DHCP relay. So... do you mean: