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Outside NAT on PIX 6.3

As mentionned in the PIX 6.3 specifications, we are able to nat outer address on less secure interface on the PIX (6.3).

In my case, I have a connection to open from a host A (192.168.40.40) on the inside interface to a host B (10.125.125.125) on the outside interface. I have to nat (static) the address 10.125.125.125 to 190.168.50.50 on the outside interface so the internal host (A) will open its connection to host B using 192.168.50.50 as destination IP address instead of 10.125.125.125.

My question is:

1- How should I configure that NAT on the PIX?

2- The security rule to permit A to initiate a connection to B, should be configured with which destination address (the real or the natted)?

Thanks for your help.

1 REPLY

Re: Outside NAT on PIX 6.3

Assuming, "inside" and "outside" refer to more secure and less secure (respectively) interfaces, this should be a relatively simple destination NAT exercise. The command to do this in the 6.3 release of PIX code should look something like this:

static (outside,inside) 190.168.50.50 10.125.125.125

**Note that this is reverse from what you normally see.

The security rule applied to your inside interface in this case should permit traffic to the NAT address (190.168.50.50). Hope this helps.

Scott

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