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Static NAT on Cisco 2600 from outside host to internal host

Posted on 2007-03-28
Medium Priority
Last Modified: 2008-02-01
Cisco 2600 router.What is the command to allow a host on the Internet to be able to RDP to an internal server?  The Cisco 2600 needs a nat statement on it, I know.  The external ip on the 2600 is: EXTERNAL_IP.  The internal ip address of the server is INTERNAL_IP.

Would the command be:
in nat inside source static tcp EXTERNAL_IP 3389 INTERNAL_IP 3389  ??

the fact that I am trying to translate an external destination address to an internal destination address makes me wonder about the term 'inside' being used in the statement, vs. using outside.

Question by:cliffordgormley
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Accepted Solution

billwharton earned 2000 total points
ID: 18812518
Nopes, it'll only be:
ip nat inside source static internal_ip external_ip

The syntax usually is:
ip nat inside souce static inside_local inside_global

inside_local refers to a local area network address on the inside of your router
inside_global refers to a globally addressable address on the outside of your router (this address should be reachable by Internet hosts)

Here's a very good document explaining you in-depth what the definitions mean. It may be confusing at first but you'll get it:

You can limit access to particular ports when you place your access lists on the outside interface.

Hope this helps

Author Comment

ID: 18812999
Excellent!  Thanks Bill

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