terraform-aws-firewall

Terraform module to create an AWS firewall

Usage

module "firewall" {
  name        = "my-firewall"
  description = "my firewall for this vpc"

  # Cannot use vpc dependency as vpc will also depend on this
  subnet_ids = [
   "subnet-1a",
   "subnet-1b",
   "subnet-1c"
  ]

  vpc_id = "vpc-xx"

  # the key name will be used in sid, only accept numeric :*
  blocked_ips = {
    "30092021": [
      "277.333.444.555/32", "333.444.555.666/32"
    ]
  }

  blocked_domains = {
    "my-blocked-domain-list": [
      "example.com"
    ]
  }
}

Requirements

Name	Version
terraform	>= 0.13

Providers

Name	Version
aws	n/a
random	n/a

Modules

No modules.

Resources

Name	Type
aws_cloudwatch_log_group.main	resource
aws_kms_alias.main	resource
aws_kms_key.main	resource
aws_networkfirewall_firewall.main	resource
aws_networkfirewall_firewall_policy.main	resource
aws_networkfirewall_logging_configuration.main	resource
aws_networkfirewall_rule_group.allow-ips	resource
aws_networkfirewall_rule_group.block-domains	resource
aws_networkfirewall_rule_group.block-everything	resource
aws_networkfirewall_rule_group.block-ips	resource
random_id.sid	resource
aws_caller_identity.current	data source

Inputs

Name	Description	Type	Default	Required
allowed_ips	IPs to allow (both ingress & egress), note that keys can only be numeric, and maximum capacity across all rules is 30000	map(object({ capacity = number ips = list(string) }))	{}	no
aws_region	Region which resources will be created in	string	"ap-southeast-1"	no
block_everything_capacity	Number of rules this rule group will contain	number	25	no
blocked_domains	Domains to block (both ingress & egress), maximum capacity across all rules is 30000	map(object({ capacity = number domains = list(string) }))	{}	no
blocked_ips	Block all traffic from/to specific IPs, note that keys can only be numeric, and maximum capacity across all rules is 30000	map(object({ capacity = number ips = list(string) }))	{}	no
cloudwatch_log_retention_in_days	Specifies the number of days you want to retain log events in the specified log group. Possible values are: 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, 3653, and 0. If you select 0, the events in the log group are always retained and never expire.	number	180	no
create_network_firewall	toggle for creation of network firewall, set to false if you only want to create the firewall policy with this module	bool	true	no
egress_allowed_ips	Destination IPs to allow for outgoing, note that keys can only be numeric, and maximum capacity across all rules is 30000	map(object({ capacity = number ips = list(string) }))	{}	no
enable_block_everything_by_default	Creates rule that will block all traffic by default, and you will have to whitelist routes specifically to allow internet traffic	bool	false	no
name	The name of the network firewall	string	n/a	yes
subnet_ids	Subnets used to create network firewall.	set(string)	[]	no
tags	A map of tags to add to all resources	map(any)	{}	no
vpc_id	n/a	string	""	no

Outputs

Name	Description
firewall	n/a
firewall_policy_arn	n/a