Don't pass any info from the ISP inside.  Use the PIX as your default gateway for outbound traffic and on the PIX point the default to the inside ethernet of your Internet router.  On the Internet router point to your ISP.  Very standard practice.
 
John
 
Lorenzo Montezemolo <[EMAIL PROTECTED]> wrote in message 8q8fjg$t76$[EMAIL PROTECTED]">news:8q8fjg$t76$[EMAIL PROTECTED]...
> How would this work if NAT were in place?  We're thinking about doing
> something similar where we have our ISP-managed router passing
> default-network information from outside, through the PIX, and to the
> inside.  Any thoughts?
>
> Lorenzo
>
>
>
> ""Omar Baceski"" <[EMAIL PROTECTED]> wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> | you can put an explicit neighboring between the routers to avoid using
> | multicast. then you need to put a coumple conduits to let ospf passtrough.
> |
> |
> |
> | > -----Mensaje original-----
> | > De: Nabil Fares [SMTP:[EMAIL PROTECTED]]
> | > Enviado el: Tuesday, September 19, 2000 2:38 PM
> | > Para: [EMAIL PROTECTED]
> | > Asunto: PIX and OSPF
> | >
> | > Greetings,
> | >
> | > I'm testing PIX515 and I've couple of questions concerning OSPF.  I'll
> be
> | > installing a PIX between 2 7XXX router:
> | >
> | > Router-C1>------PIX515------>Router-C2
> | > OSPF                           OSPF
> | >
> | >
> | > Do I've to do anything special on PIX to pass OSPF?  Any help is great.
> | >
> | >
> | > thanks,
> | >
> | > Nabil
> | >
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>
>
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