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Re: [FW1] Re-Routing VPN Traffic




We have a similar problem - although ours is made worse by the fact that the single connection point in our case is running on a Nortel VPN box:-

SiteA - - CPpointVPN - - Site B - - Nortel VPN - - Site C

SiteA to B no problem, Site B to C no problem, Site A to C doesn't work - get dest unreachable from traceroute (from an ISP router) but can't see any obvious routing config errors at our end.

Any ideas on our situation would help.

Tim


"Larry Pingree" <[email protected]>
Sent by: [email protected]

04/23/01 06:38 PM

       
        To:        "Andreas Eltrich" <[email protected]>, <[email protected]>
        cc:        
        Subject:        Re: [FW1] Re-Routing VPN Traffic



Hmm.. I think the only way to do this would be fully meshed. Anyone else
have any ideas on this one?



-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-
Larry Pingree
Sr. Security Consultant
Email: [email protected]

SiegeWorks
WebSite: http://www.siegeworks.com/
Enterprise Support, Security Consulting and Training
-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-
----- Original Message -----
From: Andreas Eltrich <[email protected]>
To: <[email protected]>
Sent: Tuesday, April 17, 2001 3:29 AM
Subject: [FW1] Re-Routing VPN Traffic


>
> Hi!
>
> last week I've set up a VPN triangle between three Nokia IP330 with
> Single-Gateway/VPN-1 4.1 SP3. All three firewalls are managed through
their
> own management module. Ecncryption scheme is 3DES/IKE. There is a 10.x/21
> net behind each of the boxes. SecuRemote Dialin is possible to each of
> them.
>
> Now this VPN needs to be connected to another branch in another country.
> The customer wanted to build only one VPN tunnel to the new branch, but
> re-route all traffic within the whole VPN to get the new branch reachable
> from everywhere.
>
>                       Site D (new)
>                        10.30/21
>                        +------+
>                        |      |
>                        +------+
>                           :
>                           :
>                           :
>                           :
>                        +------+
>                        |      |  Site A
>                        +------+ 10.31/21
>                           /\
>                          /  \
>                         /    \
>                        /      \
>                       /        \
>                      /          \
>                     /            \
>                 +------+      +------+
>         Site B  |      |------|      |  Site C
>        10.32/21 +------+      +------+ 10.33/21
>
> In my understanding there needs to be a full-mesh topology to achieve full
> connectivity. Or is it possible to connect the triangle only at one end to
> the forth site? If yes, please describe how to set up IP routing for the
> 10.x/21 nets and how to set up encryption domains at each site.
>
> What about SecuRemote clients? Will they be able to reach site D when
> dialing into the other sites?
>
> Thank you in advance!
>
> regards, Elchy
>
> --
>  A. Eltrich  -  mailto:[email protected]
>  LAN/WAN System Engineer - http://www.inotronic.de/
>  inotronic Computers GmbH  -  Pfaelzer-Wald-Str. 70
>  D-81539 Muenchen - Tel: +49-89-439007-0 - Fax: -41
>
>
>
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