You can associate multiple subnets from the same VPC with a Client VPN endpoint. The region to use. While there is not a specific solution to simulate Client VPN failover the documentation below might provide some guidance on how to think about it To use the following examples, you must have the AWS CLI installed and configured. This resource can prove useful when a module accepts a subnet ID as an input variable and needs to, for example, determine the ID of the VPC that the . We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. Route ("exampleRoute", client_vpn_endpoint_id = example_endpoint. You can associate only one subnet in each Availability Zone. Why do quantum objects slow down when volume increases? You are not logged in. 1 The source code below provisions the AWS client VPN. You are not logged in. Similarly as long as you associate 2 subnets from 2 different AZs to the ClientVPN endpoints the setup will give you AZ level redundancy. With Client VPN, we can access our resources from any location using an OpenVPN-based VPN client. Once connected ssh into your ec2 instance. In the AWS Client VPN, for the number of active client connections, Name the VPN connection and enter a subnet that will be given to the VPN clients. If you have the required permissions, the error response is DryRunOperation . This subnet shouldn't overlap with the VPC subnet. All rights reserved. AWS VPN suddenly stopped connecting to private instances My VPN 'suddenly' (without any obvious reason) stopped allowing connections to EC2 instances, ECS tasks that live on the private subnet. Server and Client Certificate and keys: id, destination_cidr_block = "0.0.0.0/0", target_vpc_subnet_id = example_network_association. In this article, I will show you how to configure the AWS client VPN endpoint for accessing resources in a private subnet of peered VPC setup. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. "/> AWS Client VPN is a managed client-based VPN service. WireGuard performs much better as compared to OpenVPN. The default value is 60 seconds. Credentials will not be loaded if this argument is provided. The authorization rule specifies which clients have access to the VPC. To associate a target network with a Client VPN endpoint (console) Open the Amazon VPC console at https://console.aws.amazon.com/vpc/. Use the certificates which are uploaded in previous step while configuring EndPoint. https://aws.amazon.com/blogs/networking-and-content-delivery/using-aws-client-vpn-to-scale-your-work-from-home-capacity/. Did you find this page useful? Select the Client VPN endpoint with which to associate the target network, choose Target network associations, and then choose Associate target network. there is no problems resolving to RDS which are in private subnet once im on VPN. Open the Amazon VPC console, In the navigation pane, chooseClient VPN Endpointsand chooseCreate Client VPN Endpoint. To specify a subnet thats in a different VPC, you must first modify the Client VPN endpoint ( ModifyClientVpnEndpoint ) and change the VPC thats associated with it. Open the AWS Client VPN application than Click File > Manage Profiles Click add Profile Link the profile to the terraform/certs/client-config.ovp file Now connect to your VPN. For Subnet to associate, choose the subnet to associate with the Client VPN endpoint. For more information, see How to ensure idempotency . A good answer clearly answers the question and provides constructive feedback and encourages professional growth in the question asker. It enables you to securely access your AWS resources from anywhere in the world. Step 4. Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. Overrides config/env settings. Unless otherwise stated, all examples have unix-like quotation rules. AWS Client VPN is a AWS client-based VPN service that enables we to securely access our resources in AWS and our on-premises network. The way you have setup is correct, as long as you have TGW ENIs in 2 dedicated /28 subnets in 2 different Availability Zones will give you AZ level redundancy and thats what is mentioned in the TGW Best practice guidance. For that reason, we are ignoring all changes on the subnet_id attribute. For VPC, choose the VPC in which the subnet is provisioned. First time using the AWS CLI? AWS: Setup Client VPN and DNS host mapping for the VPC Access | by tanut aran | CODEMONDAY | Medium Sign In Get started 500 Apologies, but something went wrong on our end. Route traffic of a Client VPN VPC to an instance in the same VPC, AWS VPC route traffic to Client VPN connections, AWS Lambda Function in VPC With Internet Gateway Still Can't access Internet, AWS VPC with internet access sometimes timeouts with outside requests, Can't connect Client VPN Endpoint to RDS in a VPC, Weird behavior on AWS Client VPN endpoint access through Peered VPC. 172.30.8.98. https://docs.aws.amazon.com/vpn/latest/clientvpn-admin/disaster-recovery-resiliency.html, Multiple target networks for high availability To use mutual certificate authentication select, Click on Create Client VPN endpoint and Select Associations to associate VPC with Subnet And Associate the same wait till Client VPN endpoint becomes available, Connect to Client VPN using the configuration file, Try connecting the Instance with private IP which is in the same VPC. When a subnet is connected to a Client VPN endpoint by configuring the target network, AWS creates a network interface in . Reads arguments from the JSON string provided. For Directory ID, specify the ID of the AWS Active Directory. Once the certificate creation is completed, login to the AWS console and import the certificates through ACM. WireGuard. Each connection to the Client VPN endpoint is assigned a unique IP address from the client CIDR range. User Guide for subnet_id) . The ID of the subnet to associate with the Client VPN endpoint. the VPC does have the options enabled to resolve. Also i can connect directly to redshift if i use the private IP. The maximum socket read time in seconds. The following associate-client-vpn-target-network example associates a subnet with the specified Client VPN endpoint. $ pulumi import aws:ec2clientvpn/networkAssociation:NetworkAssociation example cvpn-endpoint-0ac3a1abbccddd666,vpn-assoc-0b8db902465d069ad Example Usage Using default security group Using custom security groups It uses OpenVPN and TLS to provide a secure connection into your AWS environment. AWS Client VPN can connect but cannot access VPC resources. We recommend that you associate at least two subnets to provide Availability Zone redundancy. AWS CLIENT VPN > Redshift private subnet DNS Resolution fails. VPN (Client) VPN (Site-to-Site) WAF; WAF Classic; WAF Classic Regional; Wavelength; Web Services Budgets . confusion between a half wave and a centre tapped full wave rectifier, Arbitrary shape cut into triangles and packed into rectangle of the same area, Radial velocity of host stars and exoplanets. Click to Create Client VPN Endpoint. I setup a AWS Client VPN, have some issues with DNS resolution for redshfit. How to connect to outside world from amazon vpc? Select the Client VPN endpoint to associate with the target network. If you would like to suggest an improvement or fix for the AWS CLI, check out our contributing guide on GitHub. It is an AWS managed client-based VPN service which will help us to access the AWS resources Securely. For example, the following command creates an endpoint that uses Active Directory based authentication with a client CIDR block of 172.16../16. Associates a target network with a Client VPN endpoint. for those who are stuck with similar issue, the answer was very straight forward. Do you have a suggestion to improve the documentation? set the DNS server of the AWS VPN Client to the VPC network range, plus 2 ex if VPC range is 10.38../16 then the DNS server is at 10.31..2 https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/resolver.html Comment rePost-User-8542852 answered 5 months ago By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. If you specified a VPC when you created the Client VPN endpoint or if you have previous subnet associations, the specified subnet must be in the same VPC. But the problem i encountered is that Redshift DNS name doesnt resolve. Making statements based on opinion; back them up with references or personal experience. rev2022.12.11.43106. The JSON string follows the format provided by --generate-cli-skeleton. The base64 format expects binary blobs to be provided as a base64 encoded string. The default is port 443. I've configured AWS Client VPN so that I can successfully connect using mutual authentication (certificates) and I can access the Internet. With this we have successfully established an AWS VPC Client VPN. If the value is set to 0, the socket read will be blocking and not timeout. When using file:// the file contents will need to properly formatted for the configured cli-binary-format. This native AWS tool attaches to your VPC via an AWS Client VPN Endpoint Association with an hourly charge and comes paired with a free client to install on your endpoint device (same as OpenVPN). The default value is 60 seconds. A target network is a subnet in a VPC, Select the Associations column and specify the VPC and Subnet to associate and then click on Associate, To authorize clients to access the VPC in which the associated subnet is located, you must create an authorization rule. Basics of Cisco Defense Orchestrator; Onboard ASA Devices; Onboard FDM-Managed Devices AWS Client VPN for Desktop AWS Client VPN for Windows, 64-bit Download AWS Client VPN for macOS, 64-bit Prints a JSON skeleton to standard output without sending an API request. Find centralized, trusted content and collaborate around the technologies you use most. Share Improve this answer Follow answered Apr 26, 2019 at 18:54 Lorenz_DR 28 5 The security group allows all traffic - Zachscs Impressum, Terms of Use & Privacy Policy, Generate Server and Client Certificates and Keys, git clone https://github.com/OpenVPN/easy-rsa.git, ./easyrsa build-server-full server nopass (This step will generate server certificate and key), ./easyrsa build-client-full client1.domain.tld nopass (This step will generate client certificate and the client private key), Store/Copy the server and client certificates and keys in specified location as these are important, cp pki/private/server.key /custom_folder/, cp pki/issued/client1.domain.tld.crt /custom_folder, cp pki/private/client1.domain.tld.key /custom_folder/, Specify the authentication method to be used to authenticate clients when they establish a VPN connection. Because of an issue within the terraform AWS provider on each update the VPN network association will be removed and recreated from scratch (and this takes a while). Thanks for contributing an answer to Stack Overflow! Image Credit: AWS To learn more, see our tips on writing great answers. You choose the client CIDR range, for example, 10.2.0.0/16. Has any one encountered something similar? This means that their traffic can be routed through any of the associated subnets when they establish a connection. The AWS Client VPN services supports two types of authentication. For the authentication, choose the certificate that you just created and uploaded. Last but not least we also have to create an authorization rule which allows our clients to access resources. AWS Client VPN is a managed client-based VPN service that enables you to securely access your AWS resources and resources in your on-premises network. Data Source: aws_subnet. Refresh the. Features of Client VPN My AZ A and AZ B in this case are not the subnets with the TGW attachment, because the CVPN endpoint doesn't allow association with a subnet smaller than /27 - would it be a better/worse idea or make any difference at all if I used /27 subnets for the TGW attachments so I could associate the CVPN endpoints with the same subnets? Not the answer you're looking for? Getting Started Prerequisite Step 1: Generate server and client certificates and keys Step 2: Create a Client VPN endpoint Step 3: Associate a target network Step 4: Add an authorization rule for the VPC Step 5: Provide access to the internet Step 6: Download the Client VPN endpoint configuration file Enter a Route destination of 0.0.0.0/0 and choose the public subnet. aws Version 4.46.0 Latest Version aws Overview Documentation Use Provider aws documentation aws provider Guides ACM (Certificate Manager) ACM PCA (Certificate Manager Private Certificate Authority) AMP (Managed Prometheus) API Gateway API Gateway V2 Account Management Amplify App Mesh App Runner AppConfig AppFlow AppIntegrations AppStream 2.0 How do I arrange multiple quotations (each with multiple lines) vertically (with a line through the center) so that they're side-by-side? All values are separated by a ,. This may not be specified along with --cli-input-yaml. AWS Client VPN is a AWS client-based VPN service that enables we to securely access our resources in AWS and our on-premises network. Refresh the. The core of Project V, named V2Ray. aws_ec2_client_vpn_target_network_association Resource Overview Chef Automate Chef Desktop Chef Habitat Chef Infra Chef Infra Server Chef InSpec Chef InSpec Overview Install and Uninstall Chef InSpec for the Cloud Chef InSpec and Friends Chef InSpec Glossary Troubleshooting Chef InSpec Reference Chef InSpec Resources InSpec Resources (Single Page) 2. CVPN endpoints and TGW ENIs don't need to be in the same subnet, it sounds like the way you have done the setup is correct. Client VPN , . The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When would I give a checkpoint to my D&D party that they can return to if they die? Active Directory authentication. The maximum socket connect time in seconds. for those who are stuck with similar issue, the answer was very straight forward. Hello, Use a specific profile from your credential file. In the navigation pane, choose Client VPN Endpoints. If i try to make a request whilst connected to the VPN, i get a DNS response but the connection to the instance times out. Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. A good answer clearly answers the question and provides constructive feedback and encourages professional growth in the question asker. This video distribution service was unprecedented in AWS regarding the scale of distribution. Client VPN is associated with the private subnets Single ENIs are created per subnet TF state shows multiple network associations for each subnet respectively Client VPN is associated with the private subnets Multiple ENIs per created per subnet Add a new light switch in line with another switch? SSM Bastion Host key pair . The software client is compatible with all features of AWS Client VPN. If other arguments are provided on the command line, those values will override the JSON-provided values. Override commands default URL with the given URL. You associate a target network with a Client VPN endpoint to enable clients to establish VPN sessions. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. SG associated with subnet is useful only for internet access - add 0.0.0.0/0 and forget about it (unless someone want to enlighten me after). For more information, see Target Networks in the AWS Client VPN Administrator Guide. 1. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. I would be very grateful for any hints of what might be missing. Therefore, they might experience connectivity issues if they land on an associated subnet that does not have the required route entries. This option overrides the default behavior of verifying SSL certificates. While there is not a specific solution to simulate Client VPN failover ARCHITECTURE DESIGN AND BUILDING architecture of infrastructure for video delivery vpc and. . Client is able to connect and gets assigned IP, e.g. Log in to post an answer. Does illicit payments qualify as transaction costs? You can associate only one subnet in each Availability Zone. Clients connect to a Client VPN endpoint based on the DNS round-robin algorithm. Do not sign requests. We can access AWS resources from any location using OpenVPN client with AWS client VPN. After a few minutes, the state of your Client VPN endpoint changes to Active. Target networks are subnets in your VPC. Client VPN ports. Thank you both for your replies, much appreciated. This guide shows you how to configure a AWS Client VPN with AWS Managed Microsoft Active Directory. aws_subnet provides details about a specific VPC subnet. For this AWS Region, the . On the Route table tab, choose Create route. AWS Client VPN charges are incurred by associating a subnet with a Client VPN (end point), as quoted below. If he had met some scary fish, he would immediately return to the surface. For each SSL connection, the AWS CLI will verify SSL certificates. Select your Client VPN endpoint and choose Download client configuration. Overrides config/env settings. I have the recommended setup for TGW attachments in their own /28. Automatically prompt for CLI input parameters. Otherwise, it is UnauthorizedOperation . Note: Certificate body content will be server.crt | Certificate key content will be server.key. Open the Amazon VPC console. chasing the present vimeo; her first porn video; Newsletters; salon space for rent tampa; tucker farmers market; god thank you in urhobo language; can you take a walking stick on ryanair flight. ssh ec2-user@10.200.217.138 The authenticity of host '10.200.217.138 (10.200.217.138)' can 't be established. SSM(AWS Systems Manager) AWS Private Subnet . See the WireGuard is a new experimental VPN protocol that aims to offer a simpler, faster, and more secure solution for VPN tunneling than existing VPN protocols. All rights reserved. Generate Server and Client Certificates and Keys using below steps on any Linux system. In had the exact same problem, I had to amend the OpenVPN configuration file with the following routes. Values are separated by a ,. These examples will need to be adapted to your terminals quoting rules. Created using. Copyright 2022 smartShift Technologies, Inc. All Rights Reserved. Asking for help, clarification, or responding to other answers. set the DNS server of the AWS VPN Client to the VPC network range, plus 2, ex if VPC range is 10.38.0.0/16 then the DNS server is at 10.31.0.2, https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/resolver.html. Enable VPN connectivity for clients Navigate to VPC Console > Client VPN Enpoints > Choose Clinet VPN EndPoint > Click Associations > Click Asscociate; Select the VPC (same VPC as in Step 1) and a subnet; Click on Associate; Note: If authorization rules allow it, one subnet association is enough for clients to access a VPC's entire network. You then create 10 Client VPN connections to the AWS Client VPN endpoint that is active for one hour. Then, use the create-client-vpn-endpoint command. What is AWS Client VPN? It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. You can associate multiple subnets from the same VPC with a Client VPN endpoint. AWS Client VPN download The client for AWS Client VPN is provided free of charge. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Did neanderthals need vitamin C from the diet? check the Security Groups; once you associate the first subnet with the endpoint, AWS automatically adds a default security group, which may not allow incoming ICMP traffic from the subnet where the EC2 is running. What is AWS Client VPN? You create an AWS Client VPN endpoint in US East (Ohio) and associate one subnet to it. * AWS Client VPN endpoint hourly fee: You will be charged for your association to the AWS Client VPN endpoint on an hourly basis. GitHub hashicorp / terraform-provider-aws Public Notifications Fork 7.4k Star 7.9k Code Issues 3.5k Pull requests 395 Actions Security Insights New issue aws_ec2_client_vpn_network_association creation issues Closed We recommend that you associate at least two subnets to provide Availability Zone redundancy. This negates the need to have a user and password setup, and thus access to Active Directory. Log in to post an answer. AWS Client VPN can connect but cannot access VPC resources Ask Question Asked 3 years, 7 months ago Modified 2 years, 8 months ago Viewed 2k times Part of AWS Collective 1 I've configured AWS Client VPN so that I can successfully connect using mutual authentication (certificates) and I can access the Internet. It is a secure and highly available service. PSE Advent Calendar 2022 (Day 11): The other side of Christmas, Books that explain fundamental chess concepts. aws_ec2_client_vpn_network_association A sorted list of VPC private subnets from the module output. A target network is a subnet in a VPC. To enable clients to establish a VPN session, you must associate a target network with the Client VPN endpoint. Associates a target network with a Client VPN endpoint. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. The unique ID of the target network association. If the value is set to 0, the socket connect will be blocking and not timeout. On the Client VPN console, choose your Client VPN endpoint ID. I have a feeling Client VPN may not be possible as the vMX100 lacks the Addressing & VLANs page. The Client VPN examples at https://aws.amazon.com/blogs/networking-and-content-delivery/using-aws-client-vpn-to-scale-your-work-from-home-capacity/ use this as an example for a failover (?) Does a 120cc engine burn 120cc of fuel a minute? These can be used together or individually: Mutual Authentication: A connection is authenticated by a client certificate stored on the user's workstation. security_groups - (Optional, Deprecated use the security_group_ids argument of the aws_ec2_client_vpn_endpoint resource instead) A list of up to five . $ aws ec2 create-client-vpn-endpoint --client . The best practice is to use multiple Availability Zone. --generate-cli-skeleton (string) setup between two AZs: Is that enough to ensure connectivity between "remote workers" and VPC B/C/D in case of a problem in AZ A or AZ B? --cli-input-json | --cli-input-yaml (string) A target network is a subnet in a VPC. Client VPN endpoint can also be used for On-premise servers as well. In the navigation pane, choose Client VPN Endpoints. Disable automatically prompt for CLI input parameters. Mathematica cannot find square roots of some matrices? Choose Associations, and then choose Associate. 2022, Amazon Web Services, Inc. or its affiliates. Does aliquot matter for final concentration? In this document, we grant access to all users by clicking Authorize Ingress and specify Destination CIDR as 0.0.0.0/0, You can enable access to additional networks connected to the VPC, such as AWS services, peered VPCs, and on-premises networks. You can associate multiple subnets with a Client VPN endpoint for high availability. Why is there an extra peak in the Lomb-Scargle periodogram? You can associate multiple subnets with a Client VPN endpoint for high availability. See the Getting started guide in the AWS CLI User Guide for more information. Still, despite following manuals, I cannot access resources in other subnets in the very same VPC. 2022, Amazon Web Services, Inc. or its affiliates. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. AWS Client VPN network associations can be imported using the endpoint ID and the association ID. SSL VPN client FortiClient Tunnel mode client configuration . AWS Client VPN supports ports 443 and 1194 for both TCP and UDP. In AWS go to the VPC console and from there click on Client VPN Endpoints. The following arguments are supported: client_vpn_endpoint_id - (Required) The ID of the Client VPN endpoint. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. To associate a target network with a Client VPN endpoint. This document does not describe the Client VPN feature: vMX100 Setup Guide for Amazon AWS If the Client VPN is not currently a supported feature in the vMX100, then the document should mention that, and the UI should remove the Client VPN. Still I cannot access EC2 instance (in this scenario this is mongodb on port 27017) which is protected by a Security Group even though I allow traffic from the aforementioned VPN Security Group (sg-08649152e7b46e74a). You can connect your computer directly to AWS Client VPN for an end-to-end VPN experience. the name of Client VPN Endpoints is empty. The difference between these two is that for the NAT option the LAN IP address of the client is translated to a WAN IP address, whereas for the Routing option the LAN IP address of the client is . But, the value of "Name" is empty, i.e. The CA certificate bundle to use when verifying SSL certificates. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. hi Example 2: Remote sites on the same subnet Using FortiManager and FortiAnalyzer . If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. This is Optional selection and can be achieved by selecting Create Route option under Route table, Once all the steps are completed in AWS, Download the Client configuration, Once client configuration is downloaded appended the client certificate and key in the file at the end which was generated in step #1, (client1.domain.tld.crt abd client1.domain.tld.key) with below syntax, Download the OpenVPN software in your Local machine and Import the file. Each subnet that you associate with the Client VPN endpoint must belong to a different Availability Zone. A JMESPath query to use in filtering the response data. Copyright 2018, Amazon Web Services. For each additional network, you must add a route to the network and configure an authorization rule to give clients access. Central limit theorem replacing radical n with n. What properties should my fictional HEAT rounds have to punch through heavy armor and ERA? The default format is base64. By default, the AWS CLI uses SSL when communicating with AWS services. The state of the target network association. See Using quotation marks with strings in the AWS CLI User Guide . Each subnet that you associate with the Client VPN endpoint must belong to a different Availability Zone. Wed Nov 16, 2016 4:05 pm Re: VPN server and dial in client are using same subnet by.VPN, SSL, TLS, LAN-to-LAN, Tunnel.Citizens Advice Cornwall chose DrayTek routers; DrayTek receives 2021 PC PRO Award. The current state of the target network association. Then, you're charged per connection/hour. An IP address range from which to assign client IP addresses. Now that you want to connect to mongo EC2, add a rule to its SG to allow 27017 from sg-08649152e7b46e74a, You are trying to connect to EC2 public IP instead of private IP. AWS first introduced AWS Client VPN in December 2018. Is there any way I could realistically simulate a failure of one AZ? Connect and share knowledge within a single location that is structured and easy to search. AWS Client VPN is a managed client-based VPN service that helps to access AWS resources and resources in your on-premises network. Choose Create route. If association is left, charges will be generated even during non-use hours such as night time, so subnet association is performed only during use time. Below are the step to implement AWS VPC Client VPN. The formatting style to be used for binary blobs. subnet_id - (Required) The ID of the subnet to associate with the Client VPN endpoint. Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? How to Create an AWS Client VPN Endpoint using AWS SSO and Terraform | by Loic LAVILLE | TrackIt | Medium Write Sign up Sign In 500 Apologies, but something went wrong on our end. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated. SSL VPN with LDAP user authentication Multiple user groups with different access permissions Troubleshooting Networking . Can we keep alcoholic beverages indefinitely? Ready to optimize your JavaScript with Rust? Below are the step to implement AWS VPC Client VPN. With Client VPN, we can access our resources from any location using an OpenVPN-based VPN client. All you need is an internet connection and your VPN credentials to start using it. help getting started. A message about the status of the target network association, if applicable. After Client VPN Endpoints created, I login to AWS console, clicked on "Client VPN Endpoints", at right hand, it shows the values of "Endpoint ID", "State" and "Client CIDR". AWS Client VPN endpoint association @ $0.10hr $0.15 * 24 (hours) * 30 (days) * 8 (subnets) = $864 AWS Client VPN connection @ $0.05 per hour $0.05 * 100 users * 12 hours * 20 days per month = $1200 Total $2064 per month, which is close to what you said, maybe because I used 20 business days per month rather than 30 days. Give us feedback. the documentation below might provide some guidance on how to think about it, https://docs.aws.amazon.com/fis/latest/userguide/fis-actions-reference.html#disrupt-connectivity, https://www.wellarchitectedlabs.com/reliability/300_labs/300_testing_for_resiliency_of_ec2_rds_and_s3/7_failure_injection_az/. AWS Client VPN routes can be imported using the endpoint ID, target subnet ID, and destination CIDR block. 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