Can Private NAT Gateway be configured as a target for the Network Load Balancer?

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I need to forward traffic received from Site to Site VPN to another VPN, but SNATing is required before packets can be sent through ipsec tunnel. I am thinking of using PrivateLink with Private NAT Gateway as a target for the Network Load Balancer. Is Private NAT Gateway as NLB target a supported configuration? If yes, then how to set up health checks for target group?

1 Answer
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The following are the possible target types for a Network Load Balancer:

instance

The targets are specified by instance ID.

ip

The targets are specified by IP address.

alb

The target is an Application Load Balancer.

So you wont be able to configure a Private NAT gateway as a target for an NLB

Reference: https://docs.aws.amazon.com/elasticloadbalancing/latest/network/load-balancer-target-groups.html#target-type

If you are looking to establish connectivity between VPNs have you looked at VPN CloudHub functionality?

https://docs.aws.amazon.com/whitepapers/latest/aws-vpc-connectivity-options/aws-vpn-cloudhub.html

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answered a year ago

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