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Cisco 800 Series with multiple external IP

Posted on 2015-02-17
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Last Modified: 2015-02-19
We have a Cisco 800 series router and want to configure this with multiple WAN IP addresses. The Router is configured with 2 VLANS (192.168.1.x and 192.168.2.x). How do we configure the router with the additional IP in the ISP given range (say 64.11.12.2, 64.11.12.3 and 64.11.12.4) so that we can forward port 80 on 12.3 to internal 192.168.1.5 and 12.4 to 192.168.2.10)
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Question by:Mitch P
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by:Matthew Borrusso
Matthew Borrusso earned 250 total points
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Predrag Jovic earned 250 total points
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As Matthew Borrusso already said you need to configure NAT.
This is just config example
- create pool of addresses

#ip nat pool MYPOOL  64.11.12.2 64.11.12.4 netmask 255.255.255.xxx

64.11.12.2 - start P address
64.11.12.4 - end IP address
255.255.255.xxx - subnet mask assigned by provider

- permit VLANs to NAT
access-list 1 permit 192.168.1.0 0.0.0.255
access-list 1 permit 192.168.1.0 0.0.0.255

- NAT config

ip nat source list 1 pool MYPOOL overload

 - statically assign WAN IP address and port to host(s) behind NAT
ip nat inside source static tcp 192.168.1.5 80 64.11.12.3 80
ip nat inside source static tcp 192.168.2.10 80 64.11.12.4 80
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by:Mitch P
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Thanks to you both
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