ipProtocol

The IP protocol name ( tcp , udp , icmp , icmpv6 ) or number (see Protocol Numbers ). Use -1 to specify all protocols. When authorizing security group rules, specifying -1 or a protocol number other than tcp , udp , icmp , or icmpv6 allows traffic on all ports, regardless of any port range you specify. For tcp , udp , and icmp , you must specify a port range. For icmpv6 , the port range is optional; if you omit the port range, traffic for all types and codes is allowed.