IPFW with ppp nat

J

Junaid

Hi,

I have set up a FreeBSD machine to connect to PPPoE and do NAT. I also have IPFW on the same machine. I want to ask when a packet comes from outside or leaves from inside is it NATed first then passed to IPFW or the other way around?

I think when it is coming from outside it must be NATed first but while going to outside world it must pass IPFW before NAT.

Please clarify.

Junaid Syed
 
If you're doing NAT in ppp(8) (starting it with -nat argument, or enabling nat in your config), then incoming packets get NATed first (before IPFW), and outgoing packets last (after IPFW).
 
It depends...
Take a look in
Code: 
ipfw show
search for nat or divert or netgraph keywords. One of them can provide nat functionality.
 
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