Firewall Wizards mailing list archives

Re: VPN Gateway And Nat


From: SimonChan () lifeisgreat com sg
Date: Sun, 23 Feb 2003 15:58:54 +0800


Hi yoann,

I recently posted an issue regarding Ipsec nat transversal which is similar
to your situation.

Firstly, your router must be able to support IPSec Nat transversal where
the natting doens't destroy the ipsec header.

Perhaps, you would refer back to the list to see some of the suggestions
give by the list members.

tks.

rgds,

simon



                                                                                                                        
           
                    LE CORVIC Y InfoEdpEtcDep                                                                           
           
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                    Sent by:                               <firewall-wizards () honor icsalabs com>                     
              
                    firewall-wizards-admin () honor ic       cc:                                                        
              
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                    02/21/2003 11:44 PM                                                                                 
           
                                                                                                                        
           
                                                                                                                        
           




Hi All,

I have a slight problem with a VPN configuration, and wanted to know if you
all can help. Basically, here is the situation :

PROTECTED_NET-------VPNGATEWAY --------ROUTER-----ClientSecuremote

The public IP Adress of the VPN GATEWAY is natted at the ROUTER, so that
the
ClientSecuremote doesn't access the real IP Adress of the VPNGATEWAY, but
one on the ROUTER.

The intiation sequence works, and the authentication as well, be when the
network topology is downloaded, no access is possible on servers of the
PROTECTED_NET.

I suspect that after topology download, the real IP Adress of the gateway
is
given to ClientSecuremote, which uses it for the remaining of the
communication.

Is there a way to go around that problem, or is it a lost cause... ?

Thanks for your help.
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