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Terraform module to create Networking resources for workload deployment on AWS Cloud.
module "key_pair_vpn" {
source = "squareops/keypair/aws"
environment = "production"
key_name = format("%s-%s-vpn", "production", "skaf")
ssm_parameter_path = format("%s-%s-vpn", "production", "skaf")
}
module "vpc" {
source = "squareops/vpc/aws"
environment = "production"
name = "skaf"
vpc_cidr = "10.0.0.0/16"
azs = ["us-east-1a", "us-east-1b"]
enable_public_subnet = true
enable_private_subnet = true
enable_database_subnet = true
enable_intra_subnet = true
one_nat_gateway_per_az = true
vpn_server_enabled = true
vpn_server_instance_type = "t3a.small"
vpn_key_pair = module.key_pair_vpn.key_pair_name
enable_flow_log = true
flow_log_max_aggregation_interval = 60
flow_log_cloudwatch_log_group_retention_in_days = 90
}Refer examples for all examples.
To prevent destruction interruptions, any resources that have been created outside of Terraform and attached to the resources provisioned by Terraform must be deleted before the module is destroyed.
The private key generated by Keypair module will be stored in AWS Systems Manager Parameter Store. For more details refer this
Users need to declare vpc_cidr and subnets are calculated with the help of in-built functions.
This module supports three scenarios to create Network resource on AWS. Each will be explained in brief in the corresponding sections.
-
simple-vpc (default behavior): To create a VPC with public subnets and IGW.
vpc_cidr = ""enable_public_subnet = true
-
vpc-with-private-sub: To create a VPC with public subnets, private subnets, IGW gateway and NAT gateway.
vpc_cidr = ""enable_public_subnet = trueenable_private_subnet = true
-
complete-vpc-with-vpn: To create a VPC with public, private, database and intra subnets along with an IGW and NAT gateway. Jump server/Bastion Host is also configured.
vpc_cidr = ""enable_public_subnet = trueenable_private_subnet = trueenable_database_subnet = trueenable_intra_subnet = trueone_nat_gateway_per_az = truevpn_server_enabled = truevpn_server_instance_type = "t3a.small"vpn_key_pair = ""enable_flow_log = trueflow_log_max_aggregation_interval = 60flow_log_cloudwatch_log_group_retention_in_days = 90
The required IAM permissions to create resources from this module can be found here
To configure Pritunl VPN:
1. Access the Pritunl UI over HTTPS using the public IP of EC2 instance in browser
2. Retrieve the initial key, user and password for setting up Pritunl from AWS Secrets Manager and log in to Pritunl.
3. Create a DNS record mapping to the EC2 instance's public IP
4. After login, in the Initial setup window, add the record created in the 'Lets Encrypt Domain' field.
5. Pritunl will automatically configure a signed SSL certificate from Lets Encrypt.
6. Add organization and user to pritunl.
7. Add server and set port as 10150 which is already allowed from security group while creating instance for VPN server.
8. Attach organization to the server and Start the server.
9. Copy or download user profile link or file.
10. Import the profile in Pritunl client.
NOTE: Port 80 should be open publicly in the vpn security group to verify and renewing the domain certificate.
Security scanning is graciously provided by Prowler. Prowler is the leading fully hosted, cloud-native solution providing continuous cluster security and compliance.
| Benchmark | Description |
|---|---|
| Ensure no security groups allow ingress from 0.0.0.0/0 or ::/0 to port 3389 | No Security Groups open to 0.0.0.0/0 |
| Ensure the default security group of every VPC restricts all traffic | No Default Security Groups open to 0.0.0.0/0 |
| Name | Version |
|---|---|
| terraform | >= 1.0 |
| aws | >= 4.23 |
| Name | Version |
|---|---|
| aws | >= 4.23 |
| Name | Source | Version |
|---|---|---|
| vpc | terraform-aws-modules/vpc/aws | 3.14.4 |
| vpn_server | ./modules/vpn | n/a |
| Name | Type |
|---|---|
| aws_ec2_instance_type.arch | data source |
| Name | Description | Type | Default | Required |
|---|---|---|---|---|
| azs | List of Availability Zone to be used by VPC | list(any) |
n/a | yes |
| database_subnet_cidrs | Database Tier subnet CIDRs to be created | list(any) |
[] |
no |
| default_network_acl_ingress | List of maps of ingress rules to set on the Default Network ACL | list(map(string)) |
[ |
no |
| enable_database_subnet | Set true to enable database subnets | bool |
false |
no |
| enable_flow_log | Whether or not to enable VPC Flow Logs | bool |
false |
no |
| enable_intra_subnet | Set true to enable intra subnets | bool |
false |
no |
| enable_private_subnet | Set true to enable private subnets | bool |
false |
no |
| enable_public_subnet | Set true to enable public subnets | bool |
false |
no |
| environment | Specify the environment indentifier for the VPC | string |
"" |
no |
| flow_log_cloudwatch_log_group_retention_in_days | Specifies the number of days you want to retain log events in the specified log group for VPC flow logs. | number |
null |
no |
| flow_log_max_aggregation_interval | The maximum interval of time during which a flow of packets is captured and aggregated into a flow log record. Valid Values: 60 seconds or 600 seconds. |
number |
60 |
no |
| intra_subnet_cidrs | A list of intra subnets CIDR to be created | list(any) |
[] |
no |
| name | Specify the name of the VPC | string |
"" |
no |
| one_nat_gateway_per_az | Set to true if a NAT Gateway is required per availability zone for Private Subnet Tier | bool |
false |
no |
| private_subnet_cidrs | A list of private subnets CIDR to be created inside the VPC | list(any) |
[] |
no |
| public_subnet_cidrs | A list of public subnets CIDR to be created inside the VPC | list(any) |
[] |
no |
| vpc_cidr | The CIDR block of the VPC | string |
"10.0.0.0/16" |
no |
| vpn_key_pair | Specify the name of AWS Keypair to be used for VPN Server | string |
"" |
no |
| vpn_server_enabled | Set to true if you want to deploy VPN Gateway resource and attach it to the VPC | bool |
false |
no |
| vpn_server_instance_type | EC2 instance Type for VPN Server, Only amd64 based instance type are supported eg. t2.medium, t3.micro, c5a.large etc. | string |
"t3a.small" |
no |
| Name | Description |
|---|---|
| database_subnets | List of IDs of database subnets |
| intra_subnets | List of IDs of Intra subnets |
| private_subnets | List of IDs of private subnets |
| public_subnets | List of IDs of public subnets |
| vpc_cidr_block | IPV4 CIDR Block for this VPC |
| vpc_id | The ID of the VPC |
| vpn_host_public_ip | IP Address of VPN Server |
| vpn_security_group | Security Group ID of VPN Server |
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