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Posted by Fred Marshall on May 7, 2007, 3:53 am
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> Situation:
> 2 sites, each with 2 public IP addresses available.
> Need to set up site-to-site VPN.
> Using RV042 throughout.
>
> Existing RV042 is internet interface.
> Want to add a VPN and cannot use the internet interface device for this
> purpose and can't do a VPN passthrough because there aleady is one at one
> of the sites.
>
> It seems there are two ways:
>
> 1) simply connect an additional RV042 directly to the internet, using one
> of the available public addresses, for the VPN.
>
> 2) connect an additional RV042 to the DMZ port of the existing internet
> interface RV042. This method has been suggested by those more experienced
> than I.
>
> I have #1 working - so the VPN setup isn't an issue.
>
> I'm having trouble with #2 (DMZ) and am considering:
>
> - get better information regarding how to set up the 2 RV042s on a site to
> use the DMZ.
>
> - give up and do #1.
>
> I do wonder why #2 would be preferred if there's a bare RV042 connected to
> the internet then why not 2 of them? But I defer to the advice for now.
>
> I have not figured out how to configure #2 so that the VPN will continue
> to work after getting #1 up and running. (Switching from one to the other
> should be pretty easy: just unplug the VPN units from the direct internet
> connection and plug them into the DMZ ports of the internet interfacing
> units - assuming the "internet" units are configured ahead of time).
> Their IP addresses, being public addresses, don't change in doing this if
> I understand how to set up the DMZ at all! (oh, maybe not!)
>
> Any comments appreciated!
At least one reading from Linksys support says that a VPN on the DMZ port
will not work.
The advisor who suggested it might be the way to go has not responded one
way or another when asked.
So, I conclude that it isn't worth further investigation and have gone with
putting the VPN device directly on the internet.
Bottom line seems to be: An RV042 VPN will not work on an RV042 DMZ port.
Fred
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