Thank peter, interesting.

Right now, my problem is that in efw 2.1 I had to create "aliases" in Network 
-> Aliases,
then in Firewall -> Port forwarding -> " Add a new rule" I had a list of 
"aliases" to choose from and set up my NAT.

Now on efw 2.2.rc3 I go in [Network] tab and there I can choos from:
- Edit Hosts
- Routing
- Interfaces
But I can't find the "Aliases" Voice.

So, when I want to create a forwarding rule how can I set the Incoming ip from 
red interface to be translated to the internal IP?

Thanks, bye.
Marco.


-----Messaggio originale-----
Da: Peter Warasin [mailto:[EMAIL PROTECTED]
Inviato: venerdì 31 ottobre 2008 15.29
A: [email protected]
Oggetto: Re: [Efw-user] New feature: Source NAT

hi

The documentation is on its way, we did'nt made it to finish it yet, needless 
to say that we planned to have it ready for a while now.

While port forwarding changes the destination ip address (DNAT), SNAT changes 
only the source ip address, that's what happens when you have a big LAN which 
shares the same uplink ip address. Then every source ip address of every 
outgoing packet will be replaced with the ip address of your uplink. (This 
behaviour is defined as a "system rule")

With that feature you can for example define that a certain host in orange 
should exit with a certain ip address (mailserver for example).
That makes sense, if you have multiple ip addresses on an uplink.

Or for example you could hide your workstations in GREEN behind the ORANGE ip 
address when they make connections to ORANGE, which for example allows you to 
have workstations in ORANGE, which do not have set any default gateway.
There are plenty of scenarios...

peter

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