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 From:  Hilton Travis <Hilton at QuarkAV dot com>
 To:  m0n0wall at lists dot m0n0 dot ch
 Subject:  RE: [m0n0wall] m0n0 hacking questions
 Date:  Fri, 23 Apr 2004 06:21:47 +1000
Hi Barry,

Assign the same IPs to both devices.  I know it can be done, however I
don't know how to achieve this successfully.  I have a mate who has done
this on a few networks he administers - he uses the same IP on two
machines for routing reasons, and configures routing tables so that its
not an issue.  This is not because these clients are short of IPs, tho -
one in particular owns a /24 and a /30 and uses - in total - two of
these IPs.  :)

If you wish, I can speak to him and get him to reply.  Linux, tho, but
the theory should remain valid regardless of the OS involved.

- HiltonT

On Thu, 2004-04-22 at 11:01, Barry Mather wrote:
> Just a thought ...
> Vpn connections are not going to work if the failed over firewall has a
> different ip from the main firewall ....
> I seem to remember that sonicwall got around this ... maybe I'm wrong
> tho ...
> -----Original Message-----
> From: Barry Mather [mailto:barry dot mather at dorecentres dot com dot au] 
> Sent: 22 April 2004 10:56
> To: m0n0wall at lists dot m0n0 dot ch
> Subject: RE: [m0n0wall] m0n0 hacking questions
> I'd deffo be interested in this, I'm in the planning stages of setting
> up a WISP in Sydney, and this kind of thing would be VERY useful !
> Good work I say !
> -----Original Message-----
> From: Curt Shaffer [mailto:curt at chilitech dot net] 
> Sent: 22 April 2004 06:40
> To: m0n0wall at lists dot m0n0 dot ch
> Subject: [m0n0wall] m0n0 hacking questions
> I have started today to add a generic fail-over option for the 
> m0n0wall. I plan to add a fail-over link in the menu and this link will 
> contain an enable/disable option, a place for Secondary IP, subnet and 
> Gateway and in later versions, types of alive state checking, time 
> limits for checking and intervals to check after a state change. I am 
> just writing a script that checks for an alive state via ping or TCP 
> and returns a value. If it is ok everything stays the same, if it is 
> down it changes the wan information and adds a static route to the 
> primary destination,  then reboots the box for the settings to take 
> affect. It then checks at an interval to see if the primary destination 
> is back up and if so then it changes the wan information back to the 
> primary. I will probably add the link under the Services option on the 
> menu which I think may be the most fitting. Just letting everyone know 
> docs will be available as soon as I get a working version. I know its a 
> generic way to do it but until something better comes around it will 
> do. Let me know if you have any suggestions or requests!
> Curt Shaffer
> Wireless/Network Specialist
> Chilitech Internet Solutions
> www.chilitech.com
> 866-678-6858
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Hilton Travis                   Phone: +61-(0)7-3343-3889
Manager, Quark AudioVisual      Phone: +61-(0)419-792-394
         Quark Computers         http://www.QuarkAV.com/
(Brisbane, Australia)            http://www.QuarkAV.net/

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