It's my understanding that you can not do VPN over NAT.

===================================
Joel Eames - CCSA/CCSE
Data Security Analyst
Information Services
Texas Children's Hospital
(713)770-4441
[EMAIL PROTECTED]
===================================


> -----Original Message-----
> From: Dan Hitchcock [SMTP:[EMAIL PROTECTED]]
> Sent: Friday, September 01, 2000 1:00 PM
> To:   'Robert Jones'; [EMAIL PROTECTED]
> Subject:      RE: [FW1] Linksys DSL/Cable Router & SecuRemote
> 
> A common problem encountered with such a DSL configuration is the MTU
> size. I am certainly not the expert, but a doc can be found at
> <http://www.phoneboy.com/fw1/faq/0380.html> that may help with your issue.
> Basically, the problem is that your client is probably using the default
> ethernet MTU of 1500, while your linksys router is using an MTU more
> typical of serial connections.  Check out the link above for details.
> Good luck!
>  
> Dan Hitchcock 
> CCNA, MCSE 
> Network Engineer 
> Xylo, Inc. (formerly employeesavings.com) 
> 425.456.3970 
> The work/life solution for corporate thought leaders 
> 
>       -----Original Message-----
>       From: Robert Jones [mailto:[EMAIL PROTECTED]]
>       Sent: Friday, September 01, 2000 6:38 AM
>       To: [EMAIL PROTECTED]
>       Subject: [FW1] Linksys DSL/Cable Router & SecuRemote
>       
>       
>       Hello everyone, I apologize if this has been covered before as I am
> new to the Mailing list.
>        
>       I am attempting set up a VPN in my office.  We are using FW1 4.1 SP2
> and SecuRemote 4.1 SP2.  I set up Hybride IKE encryption and successfully
> authenticate and access my network from Home, when I'm not using the
> linksys Router.  Many people in my company will be using these Home
> Routers and I cannot seem to get the SecurRemote to access the VPN through
> them.  With the router connected, I do successfully Authenticate but then
> cannot ping anything on the internal network.  I don't even see anything
> in the log viewer that shows my ping or telnet requests. 
>        
>       I stopped the firewall, deleted the objects.C backup files and then
> made changes to the objects.C file, ":userc_NAT (true)"  and
> ":userc_IKE_NAT (true)". I then restarted the firewall and for safe
> measure, installed the policies again.  No Luck.  I then mapped UDP ports
> 259 and 500 on the Linksys Router to point to my SecuRemote Client. I also
> did a firmware upgrade on the Linksys Router to support IPSec passthru.
> Tried again, no luck. I'm sure I am forgetting to list some of things I
> did but I hope I gave everyone the idea.
>        
>       Again, when the router is disconnected and the home PC is configured
> directly for the cable modem, the VPN works beautifully.  
>        
>       Anybody have any ideas.  I have been told that this can be done,
> just no one seems to know how.
>        
>       Robert Jones
>       Plan B Communications
>       [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
> 


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