fromPort

The first port in a range of open ports on an instance.

Allowed ports:

• TCP and UDP - 0 to 65535

• ICMP - The ICMP type for IPv4 addresses. For example, specify 8 as the fromPort (ICMP type), and -1 as the toPort (ICMP code), to enable ICMP Ping. For more information, see Control Messages on Wikipedia.

• ICMPv6 - The ICMP type for IPv6 addresses. For example, specify 128 as the fromPort (ICMPv6 type), and 0 as toPort (ICMPv6 code). For more information, see Internet Control Message Protocol for IPv6.