I agree but with one caveat. I have seen double NAT break ICMP traffic in certain configurations.
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What type of ICMP? I havent really paid any attention to anything other than echo request and reply on my network, e.g. ping definitely works but I have done no checking on the various error ICMP types or the other request/replies. Anything specific about the NAT configuration that causes this?
Ping and Tracert would fail in a configuration I was running at work for a while. I had a Pix501 previously directly connected to a DSL router and everything was working fine, the DSL router was configured as a transparent bridge. I changed to a cable modem, which put the Pix501 behind a NAT on an SMC 8014 router. After that ICMP would no longer function through the Pix501. I made a couple of configuration changes which at the moment I cannot recall, and fixed it, but what had worked before did not. It would seem it was because of the double NAT.
I also had trouble setting up the internet connection in vmware running backtrack 4,
have you tried installing vmware tools in your backtrack guest? that instantly worked for me.
when your backtrack vm is up and running, go to VM => (re)install tools.
a new virtual cd drive will be created and mounted, open and install it in backtrack.
also make sure vmware virtual ethernet is in NAT mode, I've red somewhere bridged mode doesn't work.
Cheers,
Lucifer
Yes i've installed vmware tools. From what I've read, bridged mode doesn't work with the wireless connection.
I managed to get the internet working. I disabled ICS, and used the vmware dhcp server to get the ip, and seems to be ok:)
Thanks for your time
Great to hear it worked, the vmware dhcp server also did the job for me, it was a pain in the *ss, especially for a linux newbie like me.
L.