MPLS/VPN Architecture Overview > Case Study: Virtual
May 31, 2017 · Site-to-Site VPN with overlapping Subnet - posted in Barracuda NextGen and CloudGen Firewall F-Series: Hi folks, I got to replace a cisco bridge construction, which currently connects 2 locations with WAN traffic encryption. The central location and the sub location have the same ip subnet. The easiest way would be to replace the old cisco routers against new models and use the same technology Dec 05, 2017 · VPN with Overlapping Networks December 5, 2017 By Ed Harmoush 10 Comments When connecting two sites together using a Virtual Private Network (VPN), a common issue that is encountered is trying to build a VPN with overlapping networks — where both sites happen to use the same Private IP addresses. This network configuration example provides detailed information about and a step-by-step configuration example for VPNs with overlapping subnets using SRX Series Services Gateway Overlapping Virtual Private Networks. Route Targets. Propagation of VPN Routing Information in the Provider Network. VPN Packet Forwarding. In the previous chapter, you learned about Virtual Private Network (VPN) evolution; two major VPN models, overlay VPN and peer-to-peer VPN; and the major technologies used to implement both VPN models. Jul 06, 2020 · Cloud VPN expects an on-premises VPN gateway to use its external IP address for its identity. For more details about VPN gateways behind one-to-one NAT, refer to the troubleshooting page. Maximum Transfer Unit (MTU) considerations. The Cloud VPN MTU size is 1460. Jan 30, 2019 · In that address space is a subnet, 10.1.0.0/24 that has a Policy-Based Virtual Network Gateway with a Site-to-Site VPN established to an on-premises network with the address space 10.2.0.0/16. I've got the VPN connection up and running and am able to pass traffic between the two networks. All good so far. Feb 15, 2017 · I have client-to-site VPN issues if the remote user's home network overlaps with the main network. I can't see how site-to-site VPN could ever work with the sites overlapping. From a "logical" perspective, the users on one network should see the other network as just one hop away.
With an L2L VPN tunnel between different organizations, these issues become a greater concern because of overlapping IP space and the need for greater network security. We will demonstrate how both can be dealt with, but first let us setup the IPSec configuration that is common to L2L tunnels.
Overlapping Virtual Private Networks :: Chapter 8. MPLS Overlapping Virtual Private Networks. The SuperCom example might lead you to believe that a VPN is associated with a single VRF in a PE-router. Although that would be true in the case where the VPN customer needs no connectivity with other VPN customers, the situation might become more complex and require more than one VRF per VPN customer Create or Select a Network - VMware Docs Home Configure Overlapping IP for VPN. To configure overlapping IP for VPN: Enable VPN via NAT in Overlapping Address Network setup. Go to Configure > Networks from the Navigation Panel.; Click the New Network button.; In the New Network Allocation dialog box: . Type the network name in the Name textbox.; If there is a description, type it in the Description textbox.
Configuring route based IPSec with overlapping networks
What you can do is select an IP subnet that is not in use in either of your networks and then NAT your local LAN to that subnet and use that subnet when communicating to the remote site. Site-to-Site VPN with Overlapping Subnets You are forgetting to take into account the destination address. The 11.11.11.x IP can be whatever you want it to be.