Official Lammle User Forum
Lab 11.2 Problems
My Dynamic NAT configuration doesn't seem to be working.
I have tested and verified that everything in Lab 11.1 is working (after some complications I finally got it working.) I was able to follow all the steps in Lab 11.2 and everything seemed to be working fine until step 8. When I use the show users command the IP address for the second and third connections are the same. My understanding is they should be different. To add to that, when I do a show run on Lab_A to verify the Nat configs, it shows:
ip nat pool GlobalNet 126.96.36.199 188.8.131.52 netmask 255.255.255.0
ip nat inside source list 1 pool GlobalNet overload
no ip http server
ip default-network 184.108.40.206
access-list 1 permit 192.168.20.0 0.0.0.255
access-list 1 permit 192.168.30.0 0.0.0.255
The interesting thing to me is in the mapping to access list configuration (ip nat inside source list 1 pool GlobalNet overload) it shows overload. Doesn't this mean that PAT is being used? Could that explain why I am seeing the same IP address when viewing the users? I got rid of this line and reinserted it making sure that I didn't add overload but it doesn't seem to work, overload shows up again anyway. I would assume because a pool of IP addresses is being used that overload wouldn't make sense. None of the other dynamic NAT configs in this chapter use the overload command, page 676 explains thats used for PAT. So why is it showing up here?
One last thing, the sh ip nat translations doesn't show anything and the debug ip nat doesn't show anything either when pinging through Lab_A.
P.S. - I am using RouterSim and I have found it is not very forgiving with using certain variations of commands.
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