Creates an entry (a rule) in a network ACL with the specified rule number. Each network ACL has a set of numbered ingress rules and a separate set of numbered egress rules. When determining whether a packet should be allowed in or out of a subnet associated with the ACL, we process the entries in the ACL according to the rule numbers, in ascending order. Each network ACL has a set of ingress rules and a separate set of egress rules.
We recommend that you leave room between the rule numbers (for example, 100, 110, 120, ...), and not number them one right after the other (for example, 101, 102, 103, ...). This makes it easier to add a rule between existing ones without having to renumber the rules.
After you add an entry, you can't modify it; you must either replace it, or create an entry and delete the old one.
For more information about network ACLs, see Network ACLs in the Amazon Virtual Private Cloud User Guide.
The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see Common Query Parameters.
The IPv4 network range to allow or deny, in CIDR notation (for example
Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is
DryRunOperation. Otherwise, it is
Indicates whether this is an egress rule (rule is applied to traffic leaving the subnet).
ICMP protocol: The ICMP or ICMPv6 type and code. Required if specifying the ICMP protocol, or protocol 58 (ICMPv6) with an IPv6 CIDR block.
Type: IcmpTypeCode object
The IPv6 network range to allow or deny, in CIDR notation (for example
The ID of the network ACL.
TCP or UDP protocols: The range of ports the rule applies to.
Type: PortRange object
The protocol. A value of
allmeans all protocols. If you specify
-1, or a protocol number other than
icmp, traffic on all ports is allowed, regardless of any ports or ICMP types or codes you specify. If you specify protocol
58(ICMPv6) and specify an IPv4 CIDR block, traffic for all ICMP types and codes allowed, regardless of any that you specify. If you specify protocol
58(ICMPv6) and specify an IPv6 CIDR block, you must specify an ICMP type and code.
Indicates whether to allow or deny the traffic that matches the rule.
allow | deny
The rule number for the entry (for example, 100). ACL entries are processed in ascending order by rule number.
Constraints: Positive integer from 1 to 32766. The range 32767 to 65535 is reserved for internal use.
The following elements are returned by the service.
The ID of the request.
trueif the request succeeds, and an error otherwise.
For information about the errors that are common to all actions, see Common Errors.
This example creates an entry with rule number 110 in the network ACL with the
acl-2cb85d45. The rule allows ingress traffic from any IPv4
0.0.0.0/0) on UDP port 53.
https://ec2.amazonaws.com/?Action=CreateNetworkAclEntry &NetworkAclId=acl-2cb85d45 &RuleNumber=110 &Protocol=udp &RuleAction=allow &Egress=false &CidrBlock=0.0.0.0/0 &PortRange.From=53 &PortRange.To=53 &AUTHPARAMS
<CreateNetworkAclEntryResponse xmlns="http://ec2.amazonaws.com/doc/2016-11-15/"> <requestId>59dbff89-35bd-4eac-99ed-be587EXAMPLE</requestId> <return>true</return> </CreateNetworkAclEntryResponse>
This example creates an entry with rule number 120 in the network ACL with the
acl-2cb85d45. The rule allows ingress traffic from any IPv6
::/0) on TCP port 80.
https://ec2.amazonaws.com/?Action=CreateNetworkAclEntry &NetworkAclId=acl-2cb85d45 &RuleNumber=120 &Protocol=tcp &RuleAction=allow &Egress=false &Ipv6CidrBlock=::/0 &PortRange.From=80 &PortRange.To=80 &AUTHPARAMS
For more information about using this API in one of the language-specific AWS SDKs, see the following: