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我分别创建了 2 个安全组。一个用于在公共子网中运行的 ec2-instance，另一个用于在私有子网中运行的 ec2-instance。

我想从公共实例安全地 ssh 到私有实例。

私有安全组的以下端口配置是否正确或需要打开任何其他端口？这些安全组端口是否需要以某种方式连接才能通过 ssh 连接到私有实例？（我创建了 vpc，一个公共和私有子网，eip，nat-gateway）。

public_sgGroup.tf

resource "aws_security_group" "public_sg" {
  name = "Public_sg"
  description = "Security Group for Public instance-Bastion"
  

  ingress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }
  
  egress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["${var.s_group_vpc_cidr}"]
  }

  egress {
    from_port   = 80
    to_port     = 80
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

   egress {
    from_port   = 443
    to_port     = 443
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

  tags {
    Name = "Public_sgGroup"
  }
}

private_sgGroup

resource "aws_security_group" "private_sg" {
  name = "Private_sg"
  description = "Security Group for Private instance"
  

  egress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }
  
  ingress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["${var.s_group_vpc_cidr}"]
  }

  ingress {
    from_port   = 80
    to_port     = 80
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

   ingress {
    from_port   = 443
    to_port     = 443
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

  tags {
    Name = "Private_sgGroup"
  }
}

提前致谢。

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