Why does NAT routing require two static IP addresses?
For our small office, we are replacing our Linksys router to Cisco PIX 506.
Under our old setup, we had one external static IP address with NAT enabled. Port forwarding was a simple setup. Requests on port 80 go to our web server, port 25 go to our SMTP server, etc.
In order to do a similar setup using Cisco PIX 506, I am told that I need two static IP addresses. One for the PIX device itself and the other for port-forwarding. This doesn't make sense. If el cheapo Linksys router could do it with one static IP address, why can't Cisco PIX device do it?
I would appreciate it if someone can enlighten me. I hope there is a way to set it up with just one external IP address.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...