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What is NAT over VPN?
VPN provides a means for performing network address translation, called VPN NAT. VPN NAT differs from traditional NAT in that it translates addresses before applying the IKE and IPSec protocols. Network address translation (NAT) takes your private IP addresses and translates them into public IP addresses.
In what situation is a VPN feasible between two networks?
A VPN could be built between two end-systems or between two organizations, between several end-systems within a single organization or between multiple organizations across the global Internet, between individual applications, or any combination of the above.
Do IP ranges overlap?
An overlapping address space is when the IP address range in two networks are partially or completely the same. 10.0/24, and the other device on the remote end is attached to a network using the same IP address subnet, it is not possible to route the traffic through the tunnel.
How does a VPN work with overlapping addresses?
VPN traffic between sites with overlapping addresses requires address translation in both directions. Because the source address on outbound traffic cannot be the same as the destination address on inbound traffic, the addresses referenced in the inbound and outbound policies cannot be symmetrical.
Can you use site to site VPN with overlapping subnets?
I have two sites that need to connect to each other using ASA’s and site-to-site VPN. Problem is both site LAN’s have same LAN subnet and neither is in a position to re-IP right now. I’ve read that Sonicwalls have an “Apply NAT Policies” feature on them, and I’m wondering if the ASA has anything similar I can do to get around this problem.
How to solve the problem of overlapping networks?
Combined, Solution #2 will require Policy Twice NAT configuration. Solution #2 will still solve the overlapping networks problem in the same way – by convincing the local site that the opposite site is on a foreign network. The only difference is Solution #2 will attain this effect by deploying address translation on only one router.
When is the IP address in two networks is the same?
An overlapping address space is when the IP address range in two networks are partially or completely the same. If a host is attached to a network with the IP address 192.168.10.0/24, and the other device on the remote end is attached to a network using the same IP address subnet, it is not possible to route the traffic through the tunnel.