# FirewallruleProperties ## Properties | Name | Type | Description | Notes | | ------------------ | ---------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------- | | **icmpCode** | **number** | Defines the allowed code (from 0 to 254) if protocol ICMP or ICMPv6 is chosen. Value null allows all codes. | \[optional] \[default to undefined] | | **icmpType** | **number** | Defines the allowed type (from 0 to 254) if the protocol ICMP or ICMPv6 is chosen. Value null allows all types. | \[optional] \[default to undefined] | | **ipVersion** | **string** | The IP version for this rule. If sourceIp or targetIp are specified, you can omit this value - the IP version will then be deduced from the IP address(es) used; if you specify it anyway, it must match the specified IP address(es). If neither sourceIp nor targetIp are specified, this rule allows traffic only for the specified IP version. If neither sourceIp, targetIp nor ipVersion are specified, this rule will only allow IPv4 traffic. | \[optional] \[default to undefined] | | **name** | **string** | The name of the resource. | \[optional] \[default to undefined] | | **portRangeEnd** | **number** | Defines the end range of the allowed port (from 1 to 65534) if the protocol TCP or UDP is chosen. Leave portRangeStart and portRangeEnd null to allow all ports. | \[optional] \[default to undefined] | | **portRangeStart** | **number** | Defines the start range of the allowed port (from 1 to 65534) if protocol TCP or UDP is chosen. Leave portRangeStart and portRangeEnd value null to allow all ports. | \[optional] \[default to undefined] | | **protocol** | **string** | The protocol for the rule. Property cannot be modified after it is created (disallowed in update requests). | \[default to undefined] | | **sourceIp** | **string** | Only traffic originating from the respective IP address (or CIDR block) is allowed. Value null allows traffic from any IP address (according to the selected ipVersion). | \[optional] \[default to undefined] | | **sourceMac** | **string** | Only traffic originating from the respective MAC address is allowed. Valid format: aa:bb:cc:dd:ee:ff. Value null allows traffic from any MAC address. | \[optional] \[default to undefined] | | **targetIp** | **string** | If the target NIC has multiple IP addresses, only the traffic directed to the respective IP address (or CIDR block) of the NIC is allowed. Value null allows traffic to any target IP address (according to the selected ipVersion). | \[optional] \[default to undefined] | | **type** | **string** | The type of the firewall rule. If not specified, the default INGRESS value is used. | \[optional] \[default to undefined] | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.ionos.com/nodejs-sdk/models/firewallruleproperties.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.