Legacy-System-to-AWS-Migration-Lift-and-Shift-Modernization-/security_groups.tf at main · BlvckOgre/Legacy-System-to-AWS-Migration-Lift-and-Shift-Modernization- · GitHub

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# EC2 Security Group - allow HTTP, SSH
resource "aws_security_group" "ec2_sg" {
  name        = "ec2-sg"
  description = "Allow HTTP and SSH"
  vpc_id      = aws_vpc.main.id

  ingress {
    description = "SSH"
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }

  ingress {
    description = "HTTP"
    from_port   = 80
    to_port     = 80
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }

  egress {
    from_port   = 0
    to_port     = 0
    protocol    = "-1"
    cidr_blocks = ["0.0.0.0/0"]
  }

  tags = {
    Name = "ec2-sg"
  }
}

# RDS Security Group - allow PostgreSQL from EC2 only
resource "aws_security_group" "rds_sg" {
  name        = "rds-sg"
  description = "Allow PostgreSQL access from EC2 only"
  vpc_id      = aws_vpc.main.id

  ingress {
    description     = "PostgreSQL from EC2"
    from_port       = 5432
    to_port         = 5432
    protocol        = "tcp"
    security_groups = [aws_security_group.ec2_sg.id]
  }

  egress {
    from_port   = 0
    to_port     = 0
    protocol    = "-1"
    cidr_blocks = ["0.0.0.0/0"]
  }

  tags = {
    Name = "rds-sg"
  }
}