In this video we unpack the semi-common problem of overlapping IP addresses when connecting to other companies from Microsoft Azure. We then propose, explain and give a technical demonstration of two solutions. Number one uses Azure VPN Gateway NAT feature, and number two uses the IP agnostic nature of Azure Private Link Service. Links mentioned in the video are included below.
Some excellent labs by fellow MSFT Azure Networking GBB:
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Docs:
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Tip: If you are building this solution in Azure make sure you pay special attention to NSG and UDR (they need to take in to consideration the NAT ranges in play)
00:00 Introduction
01:00 Base lab topology
02:22 Spoke VNet with overlapping IP address space
04:04 Additional context and scope
04:55 Problematic BGP and effective routes analysis
06:00 Azure VPN Gateway NAT, solution and config
09:50 Azure VPN Gateway NAT, verification and demo
12:30 Azure VPN Gateway NAT, packet walk
16:00 Azure VPN Gateway NAT, Azure monitor NAT metrics
16:25 Private Link Service, solution and config
22:30 Private Link Service, verification and packet walk
24:50 Conclusion and recommendations
