Routing of traffic between separate compainies both using private 10 net addresses

15 pts.
Tags:
Cisco 3550
Cisco VPN
Firewall Cluster
Private IP
VPN issue
We have two different networks in two towns that wish you route traffic using existing 10.x.x.x network traffic. There is no conflict with the addresses we wish to use. There is of course a firwall in place on both sides. Is it possible to route all 10 net traffic between sights using one VPN, or would you have to set up individual VPN tunnels. This is a new question for me, never considering desperate 10 traffic between different networks. Any help would be appreciated.

Thanks,

Brett



Software/Hardware used:
Cisco 3550 and Firewall One Cluster

Answer Wiki

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From what you provided, you should be able to route the 10.x.x.x traffic down a single VPN connection. Of course it will depend on your VPN device. If your firewalls also support VPN then all you have to do is setup the vpn connection and put the specific subnets on your local side and remote side. Example

Site A
Local network 10.100.1.0/24, 10.125.25.0/26
Remote network 10.255.20.128/25, 10.100.2.0/24, 10.100.3.0/24

Then on the other side it would have the opposite networks as above.
Site B
Local network 10.255.20.128/25, 10.100.2.0/24, 10.100.3.0/24
Remote network 10.100.1.0/24, 10.125.25.0/26

You just need to make sure you put in the time to look at what IPs are used on each side to setup the correct local and remote subnets for your VPN connections.

Hope that helps
Ryan Gunther

http://www.onlinetech.com

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  • pkpatel1151
    You can use one VPN regardless of number of networks on each side.
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  • Bunny1
    [...] Routing of traffic between separate companies both using private 10 net addresses [...]
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  • Bunny1
    [...] Routing of traffic between separate compainies both using private 10 net addresses [...]
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