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vpc-security-groups.tf
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vpc-security-groups.tf
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## Bastion SG
resource "aws_security_group" "bastion" {
name_prefix = "${var.main_project_tag}-bastion-sg"
description = "Firewall for the bastion instance"
vpc_id = aws_vpc.consul.id
tags = merge(
{ "Name" = "${var.main_project_tag}-bastion-sg" },
{ "Project" = var.main_project_tag }
)
}
resource "aws_security_group_rule" "bastion_allow_22" {
security_group_id = aws_security_group.bastion.id
type = "ingress"
protocol = "tcp"
from_port = 22
to_port = 22
cidr_blocks = var.allowed_bastion_cidr_blocks
ipv6_cidr_blocks = length(var.allowed_bastion_cidr_blocks_ipv6) > 0 ? var.allowed_bastion_cidr_blocks_ipv6 : null
description = "Allow SSH traffic."
}
resource "aws_security_group_rule" "bastion_allow_outbound" {
security_group_id = aws_security_group.bastion.id
type = "egress"
protocol = "-1"
from_port = 0
to_port = 0
cidr_blocks = ["0.0.0.0/0"]
ipv6_cidr_blocks = length(var.allowed_bastion_cidr_blocks_ipv6) > 0 ? ["::/0"] : null
description = "Allow any outbound traffic."
}
## Load Balancer SG
resource "aws_security_group" "load_balancer" {
name_prefix = "${var.main_project_tag}-alb-sg"
description = "Firewall for the application load balancer fronting the consul server."
vpc_id = aws_vpc.consul.id
tags = merge(
{ "Name" = "${var.main_project_tag}-alb-sg" },
{ "Project" = var.main_project_tag }
)
}
resource "aws_security_group_rule" "load_balancer_allow_80" {
security_group_id = aws_security_group.load_balancer.id
type = "ingress"
protocol = "tcp"
from_port = 80
to_port = 80
cidr_blocks = var.allowed_traffic_cidr_blocks
ipv6_cidr_blocks = length(var.allowed_traffic_cidr_blocks_ipv6) > 0 ? var.allowed_traffic_cidr_blocks_ipv6 : null
description = "Allow HTTP traffic."
}
resource "aws_security_group_rule" "load_balancer_allow_443" {
security_group_id = aws_security_group.load_balancer.id
type = "ingress"
protocol = "tcp"
from_port = 443
to_port = 443
cidr_blocks = var.allowed_traffic_cidr_blocks
ipv6_cidr_blocks = length(var.allowed_traffic_cidr_blocks_ipv6) > 0 ? var.allowed_traffic_cidr_blocks_ipv6 : null
description = "Allow HTTPS traffic."
}
resource "aws_security_group_rule" "load_balancer_allow_outbound" {
security_group_id = aws_security_group.load_balancer.id
type = "egress"
protocol = "-1"
from_port = 0
to_port = 0
cidr_blocks = ["0.0.0.0/0"]
ipv6_cidr_blocks = length(var.allowed_traffic_cidr_blocks_ipv6) > 0 ? ["::/0"] : null
description = "Allow any outbound traffic."
}
## Consul Server Instance SG
resource "aws_security_group" "consul_server" {
name_prefix = "${var.main_project_tag}-consul-server-sg"
description = "Firewall for the consul server."
vpc_id = aws_vpc.consul.id
tags = merge(
{ "Name" = "${var.main_project_tag}-consul-server-sg" },
{ "Project" = var.main_project_tag }
)
}
resource "aws_security_group_rule" "consul_server_allow_8500" {
security_group_id = aws_security_group.consul_server.id
type = "ingress"
protocol = "tcp"
from_port = 8500
to_port = 8500
source_security_group_id = aws_security_group.load_balancer.id
description = "Allow HTTP traffic from Load Balancer."
}
resource "aws_security_group_rule" "consul_server_allow_client_8500" {
security_group_id = aws_security_group.consul_server.id
type = "ingress"
protocol = "tcp"
from_port = 8500
to_port = 8500
source_security_group_id = aws_security_group.consul_client.id
description = "Allow HTTP traffic from Consul Client."
}
resource "aws_security_group_rule" "consul_server_allow_client_8301" {
security_group_id = aws_security_group.consul_server.id
type = "ingress"
protocol = "tcp"
from_port = 8301
to_port = 8301
source_security_group_id = aws_security_group.consul_client.id
description = "Allow LAN gossip traffic from Consul Client to Server. For managing cluster membership for distributed health check of the agents."
}
resource "aws_security_group_rule" "consul_server_allow_client_8300" {
security_group_id = aws_security_group.consul_server.id
type = "ingress"
protocol = "tcp"
from_port = 8300
to_port = 8300
source_security_group_id = aws_security_group.consul_client.id
description = "Allow RPC traffic from Consul Client to Server. For client and server agents to send and receive data stored in Consul."
}
resource "aws_security_group_rule" "consul_server_allow_server_8301" {
security_group_id = aws_security_group.consul_server.id
type = "ingress"
protocol = "tcp"
from_port = 8301
to_port = 8301
source_security_group_id = aws_security_group.consul_server.id
description = "Allow LAN gossip traffic from Consul Server to Server. For managing cluster membership for distributed health check of the agents."
}
resource "aws_security_group_rule" "consul_server_allow_server_8300" {
security_group_id = aws_security_group.consul_server.id
type = "ingress"
protocol = "tcp"
from_port = 8300
to_port = 8300
source_security_group_id = aws_security_group.consul_server.id
description = "Allow RPC traffic from Consul Server to Server. For client and server agents to send and receive data stored in Consul."
}
resource "aws_security_group_rule" "consul_server_allow_22_bastion" {
security_group_id = aws_security_group.consul_server.id
type = "ingress"
protocol = "tcp"
from_port = 22
to_port = 22
source_security_group_id = aws_security_group.bastion.id
description = "Allow SSH traffic from consul bastion."
}
resource "aws_security_group_rule" "consul_server_allow_outbound" {
security_group_id = aws_security_group.consul_server.id
type = "egress"
protocol = "-1"
from_port = 0
to_port = 0
cidr_blocks = ["0.0.0.0/0"]
description = "Allow any outbound traffic."
}
## Consul Client Instance SG
resource "aws_security_group" "consul_client" {
name_prefix = "${var.main_project_tag}-consul-client-sg"
description = "Firewall for the consul client."
vpc_id = aws_vpc.consul.id
tags = merge(
{ "Name" = "${var.main_project_tag}-consul-client-sg" },
{ "Project" = var.main_project_tag }
)
}
resource "aws_security_group_rule" "consul_client_allow_8500" {
security_group_id = aws_security_group.consul_client.id
type = "ingress"
protocol = "tcp"
from_port = 8500
to_port = 8500
source_security_group_id = aws_security_group.load_balancer.id
description = "Allow HTTP traffic from Load Balancer."
}
resource "aws_security_group_rule" "consul_client_allow_lb_9090" {
security_group_id = aws_security_group.consul_client.id
type = "ingress"
protocol = "tcp"
from_port = 9090
to_port = 9090
source_security_group_id = aws_security_group.load_balancer.id
description = "Allow traffic from Load Balancer to Consul Clients for Fake Service."
}
resource "aws_security_group_rule" "consul_client_allow_9090" {
security_group_id = aws_security_group.consul_client.id
type = "ingress"
protocol = "tcp"
from_port = 9090
to_port = 9090
source_security_group_id = aws_security_group.consul_client.id
description = "Allow traffic from Consul Clients for Fake Service."
}
resource "aws_security_group_rule" "consul_client_allow_20000" {
security_group_id = aws_security_group.consul_client.id
type = "ingress"
protocol = "tcp"
from_port = 20000
to_port = 20000
source_security_group_id = aws_security_group.consul_client.id
description = "Allow traffic from Consul Clients for Fake Service via Envoy Proxy."
}
resource "aws_security_group_rule" "consul_client_allow_22_bastion" {
security_group_id = aws_security_group.consul_client.id
type = "ingress"
protocol = "tcp"
from_port = 22
to_port = 22
source_security_group_id = aws_security_group.bastion.id
description = "Allow SSH traffic from consul bastion."
}
resource "aws_security_group_rule" "consul_client_allow_outbound" {
security_group_id = aws_security_group.consul_client.id
type = "egress"
protocol = "-1"
from_port = 0
to_port = 0
cidr_blocks = ["0.0.0.0/0"]
description = "Allow any outbound traffic."
}