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Subnetting public IPs

Posted on 2009-07-14
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Last Modified: 2012-05-07
We have a point to point circuit going from our cyber center to our central office. We have an Asa at the cyber center that nats our public ips to our inside network to our central office. Does any one know how we can subnet our public network so we can physically have one of our public ips sitting at our central office on a seperate router?
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Question by:dufff
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by:KETTANEH
KETTANEH earned 1000 total points
ID: 24857139
the ISP will give you a subnet of public IPs. you have to connect the main router to  a switch (public switch) and from this switch you can put any IP of your public (even you can use a subnet of that range)
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by:dosdet2
dosdet2 earned 1000 total points
ID: 24862450
You may want to use a one to one nat from the internet facing router (with the public IP) to your central office router (with an internal IP) for added protection.  

For most applications that can be setup to act like the public IP is sitting on that router without having the exposure of having a public IP there.  Just a thought.
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Accepted Solution

by:
dufff earned 0 total points
ID: 25019139
This is what I did to make it work:
-sw01

 vlan 102

 name New_VPN

interface Vlan102

description New VPN Network

ip address 67.99.95.241 255.255.255.248

router eigrp 100

network 67.99.95.240 0.0.0.7

fw01

name 67.99.95.242 new_vpn

access-list TO_FW<--FROM_OUTSIDE extended permit ip any host new_vpn
 
static (inside,outside) new_vpn new_vpn netmask 255.255.255.255

Now i have a public IP at one of my point to point locations

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by:dufff
ID: 25019155
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