VPN - bobbae/gcp GitHub Wiki

Cloud VPN securely extends your peer network to Google's network through an IPsec VPN tunnel. Traffic is encrypted and travels between the two networks over the public internet.

https://cloud.google.com/network-connectivity/docs/vpn

If you need an enterprise-grade connection to Google Cloud that has higher throughput, you can choose Dedicated Interconnect or Partner Interconnect.

https://cloud.google.com/network-connectivity/docs/how-to/choose-product#compare-interconnect-solutions

https://cloud.google.com/architecture/patterns-for-connecting-other-csps-with-gcp

Cloud VPN is easy to set up and cheaper than other interconnect options.

https://cloud.google.com/network-connectivity/docs/vpn/concepts/overview#specifications

https://cloud.google.com/network-connectivity/pricing

Cloud Interconnect

https://cloud.google.com/network-connectivity/docs/how-to/choose-product#cloud-interconnect

Private Google Access for on-premises hosts

https://cloud.google.com/vpc/docs/private-google-access-hybrid

Shared VPC

https://cloud.google.com/vpc/docs/shared-vpc

Network Connectivity

https://cloud.google.com/network-connectivity/docs/concepts

Types of Cloud VPN

Classic VPN

Classic VPN gateways have a single interface, a single external IP address, and support tunnels that use dynamic (BGP) or static routing (policy-based or route-based). They provide an SLA of 99.9% service availability.

HA VPN

HA VPN lets you easily set up redundant VPNs to isolate failures and provide continuous connectivity for workloads that are too important to fail.

Use Case 1: Migrate an existing Classic VPN solution to HA VPN utilizing BGP as the routing protocol to an on-premises network (or any non Google Networks). Use Case 2: Migrate an existing Classic VPN utilizing policy based VPN to HA VPN utilizing BGP between two projects or VPCs within Google Cloud Platform.

https://www.youtube.com/watch?v=lIEExVWf5bg

If a Cloud VPN tunnel goes down, it restarts automatically. If an entire virtual VPN device fails, Cloud VPN automatically instantiates a new one with the same configuration. The new gateway and tunnel connect automatically.

VPN tunnels connected to HA VPN gateways must use dynamic (BGP) routing. Depending on the way that you configure route priorities for HA VPN tunnels, you can create an active/active or active/passive routing configuration. For both of these routing configurations, both VPN tunnels remain active.

https://cloud.google.com/network-connectivity/docs/vpn/concepts/topologies

Active/active vs. active/passive routing options for HA VPN

https://cloud.google.com/network-connectivity/docs/vpn/concepts/overview#active

Comparison between HA VPN and Classic VPN

https://cloud.google.com/network-connectivity/docs/vpn/concepts/overview#comparison_table

Organization policy and VPC service controls

BYOIP - Bring your own IP

https://cloud.google.com/vpc/docs/bring-your-own-ip#planning

Limiting use of external IP

https://cloud.google.com/architecture/best-practices-vpc-design#limit-access

https://cloud.google.com/architecture/building-internet-connectivity-for-private-vms

IP address management

https://cloud.google.com/architecture/gke-ip-address-mgmt-strategies

Cloud VPN Topologies

With Cloud VPN, your on-premises hosts communicate through one or more IPsec VPN tunnels to Compute Engine Virtual Machine (VM) instances in your project's VPC networks.

https://cloud.google.com/network-connectivity/docs/vpn/concepts/topologies

HA VPN to peer VPN Gateways

https://cloud.google.com/network-connectivity/docs/vpn/concepts/topologies#to_peer_vpn_gateways

HA VPN to AWS peer Gateways

https://cloud.google.com/network-connectivity/docs/vpn/concepts/topologies#to_aws_peer_gateways

HA VPN between Google Cloud networks

https://cloud.google.com/network-connectivity/docs/vpn/concepts/topologies#2-gcp-gateways

Advanced configurations

You can create a VPN tunnel that has the same IP range as another tunnel, a subset of the other tunnel's range, or a superset of the other tunnel's range.

For details, see Order of routes.

In Networks and tunnel routing, you can find information about supported Virtual Private Cloud (VPC) networks and routing options, including traffic selectors.