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AWS VPN with split tunnel enabled. When I connect to the VPN with the AWS VPN Client, I lose Internet on my Mac endpoint. However, I do seem to reach the VPN as I see my connection in the AWS VPN console.

  • I have a VPC with IPv4 CIDR 172.31.0.0/16 and 3 subnets 172.31.32.0/20, 172.31.0.0/20 and 172.31.16.0/20
  • The VPC has an internet gateway attached.
  • I have a Client VPN endpoints with Client CIDR 10.0.0.0/22 and it has one of the subnets associated as "Target network associations". The one with 172.31.0.0/20.
  • The endpoint has a security group which does have a Outbound rules to allow all traffic.
  • The endpoint has a "Authorization rules" to allow all the VPC and Destination CIDR 172.31.0.0/16.
  • The endpoint has a "Route table" to allow all traffic for the selected subnet (172.31.0.0/20)
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1 Answer 1

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OK, I found the issue. I was following this tutorial but that missed the last steps (5 to 8) of the step 5 from here. I was able to detect this by reading the step 8 of this other guide.

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