dynamically assigning NAT pool?

dynamically assigning NAT pool?

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Subject Author Date
dynamically assigning NAT pool? Theodore Frank 08-09-2004
Posted by Theodore Frank on August 9, 2004, 5:55 am
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I am running a Cisco 1751 with two interfaces. 1 10/100 Fast Ethernet
(for external) and 1 10BT Ethernet (for internal). My external
interface is hooked up to a cable modem receiving its IP address via
DHCP. I am currently trying to setup NAT to use my publicly assigned
dynamic IP address and translate it to my private network. I am
running into problems when I try to configure the "ip nat pool"
command. Since my cable modem receives its IP via DHCP, I have no
idea what IP address(es) to list in my external pool since my IP
changes. Is there a way for my pool to configure itself dynamically?
Any help would be greatly appreciated! BTW, I am running IOS 12.2-15.
Thank-you in advance.

~Tad


Posted by Tosh on August 9, 2004, 4:18 pm
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>..... Is there a way for my pool to configure itself dynamically?

No need for any pool, try the following command:
"ip nat inside source list x interface Fa0/0 overload", where "list x" is
your nat filter and "fa0/0" in your outside interface.
This way nat will always follow the ip assigned to the outside interface.
Bye,
Max.




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