amazon-web-services - AWS 安全组导出上的协议(protocol) -1 是什么意思？

Question

我明白了egress AWS 安全组上的属性控制出站流量，但有人知道 -1 的协议(protocol)是什么意思吗？

resource "aws_security_group" "elb" {
  name = "example-elb”
  ingress {
    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"] }
}

Answer 1

它在 the documentation :

The IP protocol name (tcp, udp, icmp) or number (see Protocol Numbers). (VPC only) Use -1 to specify all protocols. If you specify -1, or a protocol number other than tcp, udp, icmp, or 58 (ICMPv6), traffic on all ports is allowed, regardless of any ports you specify. For tcp, udp, and icmp, you must specify a port range. For protocol 58 (ICMPv6), you can optionally specify a port range; if you don't, traffic for all types and codes is allowed.