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firewalls.tf
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firewalls.tf
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resource "aws_network_interface" "firewall1_trust_eni" {
subnet_id = module.vpc.private_subnets[0]
security_groups = [aws_security_group.firewall_mgmt.id, module.vpc.default_security_group_id]
private_ips_count = 1
private_ips = ["172.17.100.10"]
tags = {
Name = "firewall1_trust_eni"
}
}
resource "aws_network_interface" "firewall2_trust_eni" {
subnet_id = module.vpc.private_subnets[1]
security_groups = [aws_security_group.firewall_mgmt.id, module.vpc.default_security_group_id]
private_ips_count = 1
private_ips = ["172.17.101.10"]
tags = {
Name = "firewall2_trust_eni"
}
}
resource "aws_network_interface" "firewall1_untrust_eni" {
subnet_id = module.vpc.public_subnets[0]
security_groups = [aws_security_group.firewall.id]
source_dest_check = false
private_ips_count = 1
private_ips = ["172.17.0.50"]
tags = {
Name = "firewall1_untrust_eni"
}
}
resource "aws_network_interface" "firewall2_untrust_eni" {
subnet_id = module.vpc.public_subnets[1]
security_groups = [aws_security_group.firewall.id]
source_dest_check = false
private_ips_count = 1
private_ips = ["172.17.1.50"]
tags = {
Name = "firewall2_untrust_eni"
}
}
resource "aws_instance" "firewall1" {
ami = "ami-0e287dd3d384b7525"
instance_type = "t3.nano"
key_name = var.ssh_key
network_interface {
device_index = 0
network_interface_id = aws_network_interface.firewall1_untrust_eni.id
}
network_interface {
device_index = 1
network_interface_id = aws_network_interface.firewall1_trust_eni.id
}
tags = {
Name = "firewall1"
}
}
resource "aws_instance" "firewall2" {
ami = "ami-0e287dd3d384b7525"
instance_type = "t3.nano"
key_name = var.ssh_key
network_interface {
device_index = 0
network_interface_id = aws_network_interface.firewall2_untrust_eni.id
}
network_interface {
device_index = 1
network_interface_id = aws_network_interface.firewall2_trust_eni.id
}
tags = {
Name = "firewall2"
}
}
resource "aws_security_group" "firewall" {
name = "firewall"
description = "permit all for firewall"
vpc_id = module.vpc.vpc_id
ingress {
from_port = 0
to_port = 0
protocol = "-1"
cidr_blocks = ["0.0.0.0/0"]
}
egress {
from_port = 0
to_port = 0
protocol = "-1"
cidr_blocks = ["0.0.0.0/0"]
}
}
resource "aws_security_group" "firewall_mgmt" {
name = "firewall management"
description = "Permit SSH to firewall from VPC"
vpc_id = module.vpc.vpc_id
ingress {
from_port = 22
to_port = 22
protocol = "tcp"
cidr_blocks = ["172.17.0.0/16"]
}
}
data "template_file" "firewall1_config" {
depends_on = [aws_lb.alb]
template = file("firewall-config.tpl")
vars = {
hostname = "firewall1"
trust_ip = "172.17.100.10"
untrust_ip = "172.17.0.50"
untrust_implied_router_ip = "172.17.0.1"
alb_ip = "x.x.x.x"
}
}
data "template_file" "firewall2_config" {
depends_on = [aws_lb.alb]
template = file("firewall-config.tpl")
vars = {
hostname = "firewall2"
trust_ip = "172.17.101.10"
untrust_ip = "172.17.1.50"
untrust_implied_router_ip = "172.17.1.1"
alb_ip = "y.y.y.y"
}
}