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Restrict AWS Client VPN Access

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We already have a AWS Client VPN Setup, which is working as expected.

My On Prem team is able to connect with AWS Client VPN and access Cloud Resources.

Now my management wants to restrict AWS Client VPN access from our corporate office only.

I tried it by making changes to Security Group associated with my AWS Client VPN endpoint by allowing only access from our corporate office CIDR. But when I tested, it is not working as expected, my other team members was able to access the EC2 over VPN from outside our on-premises network.

Even I tried keeping the entire in-bound rule as blank, but still I was able to SSH into my EC2 instance.

Is there a way, to restrict access for AWS Client VPN, so that it is accessible only from my corporate office, or a way to restrict that the traffic going from VPN should only be from my on-premises network.

Sujets
Réseaux et diffusion de contenu
Balises
Client VPN AWSAmazon VPCGroupe de sécuritéRéseaux et diffusion de contenu
Langue
English
demandé il y a un an989 vues
1 réponse
2
Réponse acceptée

Hello.

By enabling the client connect handler and creating a Lambda that rejects connections other than a specific public IPv4 address, you can limit connections to only those from the office.
https://docs.aws.amazon.com/vpn/latest/clientvpn-admin/connection-authorization.html

EXPERT
répondu il y a un an
EXPERT
vérifié il y a un an
EXPERT
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  • Shivkumar
    il y a un an

    Thanks Riku for the prompt response, allow me to check this implementation and get back to you.

  • Shivkumar
    il y a un an

    Hello Riku, it is working as expected, but one small question, then what is the use of the firewall associated with the AWS Client VPN? Which traffic it is controlling?

  • Riku_Kobayashi EXPERT
    il y a un an

    It may be used to control which AWS resources a user can access as described in the following documentation: https://docs.aws.amazon.com/vpn/latest/clientvpn-admin/security-best-practices.html

    Use security groups to control which resources users can access in your VPC. For more information, see Security groups.

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