Is it possible for a NAT implementation to convert simultaneously ANY possible inside local address (multiple IP ranges, VLSM etc) to a single inside global address? Inside local can be routed or non routed ranges.
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The solution u want is very much possible. The method used is called as NAT address overloading. The principle used is. You match an access-list with the inside local ip address ranges.. Then you create a nat pool with a single ip address ( the public inside global address) and give a keyword "overload" to the pool. and associate the pool with this access-list.
Now when NAT takes place... u r internal ip addresses will be translated to the same inside global ip address..the router distinguishes different connections by changing the ports..(TCP or UDP ports)..
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