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Home > Archive > CCNP > January 2004 > reaching nat ip
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| subnet27 2004-01-08, 5:15 am |
| Hi,
Suppose i trace a natted ip what will be the results.
ie. I nat 172.16.0.5 x.x.x.x public ip.
i give a trace from a public machine to the public ip will i be able to reach it.
or
my trace stops at the public interface of the router.
regards, | |
| Demijohn 2004-01-08, 4:42 pm |
| Any responses from inside that reach the public device should appear to be from the public interface on the nat router.
What responses you actually get depend on the router (and/or firewall) configuration. | |
| subnet27 2004-01-09, 12:38 am |
| Thank you.
regards, | |
| sanjup 2004-01-10, 12:18 pm |
| Hi
iam just finding lab practise questions on NAT.Plz kindly suggest where i can find the questions.
thank you
sanjana | |
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| I don't quite understand what you mean, but if you are surfing the web, and try to ping an internal address from your network at work, chances are that the internal range is private, and won't be routed.
If you are trying to ping a public address from the internal network, you will get replies (unless your firewall is preventing the replies)
Inexactly:
Your internal netwrok (eg 10.0.0.1) will hit the external interface of your router. Your PC MAC address/IP address will be added to the NAT table, along with the destination and a unique identifier. The address information will be stripped from your packets, and the routers address info is added. The entry number for your PC will be appended to the header, and your packet will be forwarded.
The reverse will happen on the way
Hope this helps (or gets someone to give you a more accurate/precise response) |
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