Networks

The reply is very helpfull and I wish I had that a few days ago. What I am realy trying to achieve is this.

interface FastEthernet0/0
ip address 66.236.40.131 255.255.255.224
ip address 66.236.40.132 255.255.255.224 secondary
ip nat outside
ip access-group Filter_WAN_In in

interface FastEthernet 0/1
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip access-group Filter_LAN_In in
ip access-group Filter_LAN_Out out

ip nat inside source list 1 interface FastEthernet0/0 overload
ip nat inside static tcp 1**.168.1.113 25 interface FastEthernet0/1 25

etc.

access-list 1 permit any

ip access-list extended Filter_WAN_In
permit ip any any
deny ip any any
ip access-list extended Filter_LAN_In
permit tcp any host 192.168.1.113 25 any 25
permit ip any host
ip access-list extended Filter_LAN_Out
permit ip any any

With the above configuration, as you can see I am trying to use two ip addresses on the same interface FastEther0/0

What I would like to do is allow the inside network to use the first ip for nat translation dynamic translation and use the second ip address for specific static connection with internal servers like a mail server etc.

before I configure nat on outside interface, I am able to ping both IP's. Once nat is configured, I can only ping the primary ip not the secondary.

my question is can I physically configured the router to make use of the above implimentation? Since I am new to CISCO, I don't a whole lot about router configuration to determine if what I am trying to do is even possible.

If what I am trying to accomplish is not possible can I get an alternate solution?