path: root/interface-definitions/firewall.xml.in

<?xml version="1.0"?>
<interfaceDefinition>
  <node name="firewall" owner="${vyos_conf_scripts_dir}/firewall.py">
    <properties>
      <priority>199</priority>
      <help>Firewall</help>
    </properties>
    <children>
      <leafNode name="all-ping">
        <properties>
          <help>Policy for handling of all IPv4 ICMP echo requests</help>
          <completionHelp>
            <list>enable disable</list>
          </completionHelp>
          <valueHelp>
            <format>enable</format>
            <description>Enable processing of all IPv4 ICMP echo requests</description>
          </valueHelp>
          <valueHelp>
            <format>disable</format>
            <description>Disable processing of all IPv4 ICMP echo requests</description>
          </valueHelp>
          <constraint>
            <regex>(enable|disable)</regex>
          </constraint>
        </properties>
        <defaultValue>enable</defaultValue>
      </leafNode>
      <leafNode name="broadcast-ping">
        <properties>
          <help>Policy for handling broadcast IPv4 ICMP echo and timestamp requests</help>
          <completionHelp>
            <list>enable disable</list>
          </completionHelp>
          <valueHelp>
            <format>enable</format>
            <description>Enable processing of broadcast IPv4 ICMP echo/timestamp requests</description>
          </valueHelp>
          <valueHelp>
            <format>disable</format>
            <description>Disable processing of broadcast IPv4 ICMP echo/timestamp requests</description>
          </valueHelp>
          <constraint>
            <regex>(enable|disable)</regex>
          </constraint>
        </properties>
        <defaultValue>disable</defaultValue>
      </leafNode>
      <leafNode name="config-trap">
        <properties>
          <help>SNMP trap generation on firewall configuration changes</help>
          <completionHelp>
            <list>enable disable</list>
          </completionHelp>
          <valueHelp>
            <format>enable</format>
            <description>Enable sending SNMP trap on firewall configuration change</description>
          </valueHelp>
          <valueHelp>
            <format>disable</format>
            <description>Disable sending SNMP trap on firewall configuration change</description>
          </valueHelp>
          <constraint>
            <regex>(enable|disable)</regex>
          </constraint>
        </properties>
        <defaultValue>disable</defaultValue>
      </leafNode>
      <node name="group">
        <properties>
          <help>Firewall group</help>
        </properties>
        <children>
          <tagNode name="address-group">
            <properties>
              <help>Firewall address-group</help>
              <constraint>
                <regex>[a-zA-Z0-9][\w\-\.]*</regex>
              </constraint>
            </properties>
            <children>
              <leafNode name="address">
                <properties>
                  <help>Address-group member</help>
                  <valueHelp>
                    <format>ipv4</format>
                    <description>IPv4 address to match</description>
                  </valueHelp>
                  <valueHelp>
                    <format>ipv4range</format>
                    <description>IPv4 range to match (e.g. 10.0.0.1-10.0.0.200)</description>
                  </valueHelp>
                  <constraint>
                    <validator name="ipv4-address"/>
                    <validator name="ipv4-range"/>
                  </constraint>
                  <multi/>
                </properties>
              </leafNode>
              <leafNode name="include">
                <properties>
                  <help>Include another address-group</help>
                  <completionHelp>
                    <path>firewall group address-group</path>
                  </completionHelp>
                  <multi/>
                </properties>
              </leafNode>
              #include <include/generic-description.xml.i>
            </children>
          </tagNode>
          <tagNode name="domain-group">
            <properties>
              <help>Firewall domain-group</help>
              <constraint>
                <regex>[a-zA-Z_][a-zA-Z0-9][\w\-\.]*</regex>
              </constraint>
              <constraintErrorMessage>Name of domain-group can only contain alpha-numeric letters, hyphen, underscores and not start with numeric</constraintErrorMessage>
            </properties>
            <children>
              <leafNode name="address">
                <properties>
                  <help>Domain-group member</help>
                  <valueHelp>
                    <format>txt</format>
                    <description>Domain address to match</description>
                  </valueHelp>
                  <constraint>
                    <validator name="fqdn"/>
                  </constraint>
                  <multi/>
                </properties>
              </leafNode>
              #include <include/generic-description.xml.i>
            </children>
          </tagNode>
          <tagNode name="ipv6-address-group">
            <properties>
              <help>Firewall ipv6-address-group</help>
              <constraint>
                <regex>[a-zA-Z0-9][\w\-\.]*</regex>
              </constraint>
            </properties>
            <children>
              <leafNode name="address">
                <properties>
                  <help>Address-group member</help>
                  <valueHelp>
                    <format>ipv6</format>
                    <description>IPv6 address to match</description>
                  </valueHelp>
                  <valueHelp>
                    <format>ipv6range</format>
                    <description>IPv6 range to match (e.g. 2002::1-2002::ff)</description>
                  </valueHelp>
                  <constraint>
                    <validator name="ipv6-address"/>
                    <validator name="ipv6-range"/>
                  </constraint>
                  <multi/>
                </properties>
              </leafNode>
              <leafNode name="include">
                <properties>
                  <help>Include another ipv6-address-group</help>
                  <completionHelp>
                    <path>firewall group ipv6-address-group</path>
                  </completionHelp>
                  <multi/>
                </properties>
              </leafNode>
              #include <include/generic-description.xml.i>
            </children>
          </tagNode>
          <tagNode name="ipv6-network-group">
            <properties>
              <help>Firewall ipv6-network-group</help>
              <constraint>
                <regex>[a-zA-Z0-9][\w\-\.]*</regex>
              </constraint>
            </properties>
            <children>
              #include <include/generic-description.xml.i>
              <leafNode name="network">
                <properties>
                  <help>Network-group member</help>
                  <valueHelp>
                    <format>ipv6net</format>
                    <description>IPv6 address to match</description>
                  </valueHelp>
                  <constraint>
                    <validator name="ipv6-prefix"/>
                  </constraint>
                  <multi/>
                </properties>
              </leafNode>
              <leafNode name="include">
                <properties>
                  <help>Include another ipv6-network-group</help>
                  <completionHelp>
                    <path>firewall group ipv6-network-group</path>
                  </completionHelp>
                  <multi/>
                </properties>
              </leafNode>
            </children>
          </tagNode>
          <tagNode name="mac-group">
            <properties>
              <help>Firewall mac-group</help>
              <constraint>
                <regex>[a-zA-Z0-9][\w\-\.]*</regex>
              </constraint>
            </properties>
            <children>
              #include <include/generic-description.xml.i>
              <leafNode name="mac-address">
                <properties>
                  <help>Mac-group member</help>
                  <valueHelp>
                    <format>&lt;MAC address&gt;</format>
                    <description>MAC address to match</description>
                  </valueHelp>
                  <constraint>
                    <validator name="mac-address"/>
                  </constraint>
                  <multi/>
                </properties>
              </leafNode>
              <leafNode name="include">
                <properties>
                  <help>Include another mac-group</help>
                  <completionHelp>
                    <path>firewall group mac-group</path>
                  </completionHelp>
                  <multi/>
                </properties>
              </leafNode>
            </children>
          </tagNode>
          <tagNode name="network-group">
            <properties>
              <help>Firewall network-group</help>
              <constraint>
                <regex>[a-zA-Z0-9][\w\-\.]*</regex>
              </constraint>
            </properties>
            <children>
              #include <include/generic-description.xml.i>
              <leafNode name="network">
                <properties>
                  <help>Network-group member</help>
                  <valueHelp>
                    <format>ipv4net</format>
                    <description>IPv4 Subnet to match</description>
                  </valueHelp>
                  <constraint>
                    <validator name="ipv4-prefix"/>
                  </constraint>
                  <multi/>
                </properties>
              </leafNode>
              <leafNode name="include">
                <properties>
                  <help>Include another network-group</help>
                  <completionHelp>
                    <path>firewall group network-group</path>
                  </completionHelp>
                  <multi/>
                </properties>
              </leafNode>
            </children>
          </tagNode>
          <tagNode name="port-group">
            <properties>
              <help>Firewall port-group</help>
              <constraint>
                <regex>[a-zA-Z0-9][\w\-\.]*</regex>
              </constraint>
            </properties>
            <children>
              #include <include/generic-description.xml.i>
              <leafNode name="port">
                <properties>
                  <help>Port-group member</help>
                  <valueHelp>
                    <format>txt</format>
                    <description>Named port (any name in /etc/services, e.g., http)</description>
                  </valueHelp>
                  <valueHelp>
                    <format>u32:1-65535</format>
                    <description>Numbered port</description>
                  </valueHelp>
                  <valueHelp>
                    <format>start-end</format>
                    <description>Numbered port range (e.g. 1001-1050)</description>
                  </valueHelp>
                  <multi/>
                  <constraint>
                    <validator name="port-range"/>
                  </constraint>
                </properties>
              </leafNode>
              <leafNode name="include">
                <properties>
                  <help>Include another port-group</help>
                  <completionHelp>
                    <path>firewall group port-group</path>
                  </completionHelp>
                  <multi/>
                </properties>
              </leafNode>
            </children>
          </tagNode>
        </children>
      </node>
      <tagNode name="interface">
        <properties>
          <help>Interface name to apply firewall configuration</help>
          <completionHelp>
            <script>${vyos_completion_dir}/list_interfaces.py</script>
          </completionHelp>
        </properties>
        <children>
          <node name="in">
            <properties>
              <help>Forwarded packets on inbound interface</help>
            </properties>
            <children>
              #include <include/firewall/name.xml.i>
            </children>
          </node>
          <node name="out">
            <properties>
              <help>Forwarded packets on outbound interface</help>
            </properties>
            <children>
              #include <include/firewall/name.xml.i>
            </children>
          </node>
          <node name="local">
            <properties>
              <help>Packets destined for this router</help>
            </properties>
            <children>
              #include <include/firewall/name.xml.i>
            </children>
          </node>
        </children>
      </tagNode>
      <leafNode name="ip-src-route">
        <properties>
          <help>Policy for handling IPv4 packets with source route option</help>
          <completionHelp>
            <list>enable disable</list>
          </completionHelp>
          <valueHelp>
            <format>enable</format>
            <description>Enable processing of IPv4 packets with source route option</description>
          </valueHelp>
          <valueHelp>
            <format>disable</format>
            <description>Disable processing of IPv4 packets with source route option</description>
          </valueHelp>
          <constraint>
            <regex>(enable|disable)</regex>
          </constraint>
        </properties>
        <defaultValue>disable</defaultValue>
      </leafNode>
      <tagNode name="ipv6-name">
        <properties>
          <help>IPv6 firewall rule-set name</help>
          <constraint>
            <regex>[a-zA-Z0-9][\w\-\.]*</regex>
          </constraint>
        </properties>
        <children>
          #include <include/firewall/default-action.xml.i>
          #include <include/firewall/enable-default-log.xml.i>
          #include <include/generic-description.xml.i>
          <leafNode name="default-jump-target">
            <properties>
              <help>Set jump target. Action jump must be defined in default-action to use this setting</help>
              <completionHelp>
                <path>firewall ipv6-name</path>
              </completionHelp>
            </properties>
          </leafNode>
          <tagNode name="rule">
            <properties>
              <help>Firewall rule number (IPv6)</help>
              <valueHelp>
                <format>u32:1-999999</format>
                <description>Number for this Firewall rule</description>
              </valueHelp>
              <constraint>
                <validator name="numeric" argument="--range 1-999999"/>
              </constraint>
              <constraintErrorMessage>Firewall rule number must be between 1 and 999999</constraintErrorMessage>
            </properties>
            <children>
              #include <include/firewall/action.xml.i>
              #include <include/generic-description.xml.i>
              <node name="destination">
                <properties>
                  <help>Destination parameters</help>
                </properties>
                <children>
                  #include <include/firewall/address-ipv6.xml.i>
                  #include <include/firewall/fqdn.xml.i>
                  #include <include/firewall/geoip.xml.i>
                  #include <include/firewall/source-destination-group-ipv6.xml.i>
                  #include <include/firewall/port.xml.i>
                </children>
              </node>
              <node name="source">
                <properties>
                  <help>Source parameters</help>
                </properties>
                <children>
                  #include <include/firewall/address-ipv6.xml.i>
                  #include <include/firewall/fqdn.xml.i>
                  #include <include/firewall/geoip.xml.i>
                  #include <include/firewall/source-destination-group-ipv6.xml.i>
                  #include <include/firewall/port.xml.i>
                </children>
              </node>
              #include <include/firewall/common-rule.xml.i>
              #include <include/firewall/dscp.xml.i>
              #include <include/firewall/packet-length.xml.i>
              #include <include/firewall/hop-limit.xml.i>
              <node name="icmpv6">
                <properties>
                  <help>ICMPv6 type and code information</help>
                </properties>
                <children>
                  <leafNode name="code">
                    <properties>
                      <help>ICMPv6 code</help>
                      <valueHelp>
                        <format>u32:0-255</format>
                        <description>ICMPv6 code (0-255)</description>
                      </valueHelp>
                      <constraint>
                        <validator name="numeric" argument="--range 0-255"/>
                      </constraint>
                    </properties>
                  </leafNode>
                  <leafNode name="type">
                    <properties>
                      <help>ICMPv6 type</help>
                      <valueHelp>
                        <format>u32:0-255</format>
                        <description>ICMPv6 type (0-255)</description>
                      </valueHelp>
                      <constraint>
                        <validator name="numeric" argument="--range 0-255"/>
                      </constraint>
                    </properties>
                  </leafNode>
                  #include <include/firewall/icmpv6-type-name.xml.i>
                </children>
              </node>
              <leafNode name="jump-target">
                <properties>
                  <help>Set jump target. Action jump must be defined to use this setting</help>
                  <completionHelp>
                    <path>firewall ipv6-name</path>
                  </completionHelp>
                </properties>
              </leafNode>
            </children>
          </tagNode>
        </children>
      </tagNode>
      <leafNode name="ipv6-receive-redirects">
        <properties>
          <help>Policy for handling received ICMPv6 redirect messages</help>
          <completionHelp>
            <list>enable disable</list>
          </completionHelp>
          <valueHelp>
            <format>enable</format>
            <description>Enable processing of received ICMPv6 redirect messages</description>
          </valueHelp>
          <valueHelp>
            <format>disable</format>
            <description>Disable processing of received ICMPv6 redirect messages</description>
          </valueHelp>
          <constraint>
            <regex>(enable|disable)</regex>
          </constraint>
        </properties>
        <defaultValue>disable</defaultValue>
      </leafNode>
      <leafNode name="ipv6-src-route">
        <properties>
          <help>Policy for handling IPv6 packets with routing extension header</help>
          <completionHelp>
            <list>enable disable</list>
          </completionHelp>
          <valueHelp>
            <format>enable</format>
            <description>Enable processing of IPv6 packets with routing header type 2</description>
          </valueHelp>
          <valueHelp>
            <format>disable</format>
            <description>Disable processing of IPv6 packets with routing header</description>
          </valueHelp>
          <constraint>
            <regex>(enable|disable)</regex>
          </constraint>
        </properties>
        <defaultValue>disable</defaultValue>
      </leafNode>
      <leafNode name="log-martians">
        <properties>
          <help>Policy for logging IPv4 packets with invalid addresses</help>
          <completionHelp>
            <list>enable disable</list>
          </completionHelp>
          <valueHelp>
            <format>enable</format>
            <description>Enable logging of IPv4 packets with invalid addresses</description>
          </valueHelp>
          <valueHelp>
            <format>disable</format>
            <description>Disable logging of Ipv4 packets with invalid addresses</description>
          </valueHelp>
          <constraint>
            <regex>(enable|disable)</regex>
          </constraint>
        </properties>
        <defaultValue>enable</defaultValue>
      </leafNode>
      <tagNode name="name">
        <properties>
          <help>IPv4 firewall rule-set name</help>
          <constraint>
            <regex>[a-zA-Z0-9][\w\-\.]*</regex>
          </constraint>
        </properties>
        <children>
          #include <include/firewall/default-action.xml.i>
          #include <include/firewall/enable-default-log.xml.i>
          #include <include/generic-description.xml.i>
          <leafNode name="default-jump-target">
            <properties>
              <help>Set jump target. Action jump must be defined in default-action to use this setting</help>
              <completionHelp>
                <path>firewall name</path>
              </completionHelp>
            </properties>
          </leafNode>
          <tagNode name="rule">
            <properties>
              <help>Firewall rule number (IPv4)</help>
              <valueHelp>
                <format>u32:1-999999</format>
                <description>Number for this Firewall rule</description>
              </valueHelp>
              <constraint>
                <validator name="numeric" argument="--range 1-999999"/>
              </constraint>
              <constraintErrorMessage>Firewall rule number must be between 1 and 999999</constraintErrorMessage>
            </properties>
            <children>
              #include <include/firewall/action.xml.i>
              #include <include/generic-description.xml.i>
              <node name="destination">
                <properties>
                  <help>Destination parameters</help>
                </properties>
                <children>
                  #include <include/firewall/address.xml.i>
                  #include <include/firewall/fqdn.xml.i>
                  #include <include/firewall/geoip.xml.i>
                  #include <include/firewall/source-destination-group.xml.i>
                  #include <include/firewall/port.xml.i>
                </children>
              </node>
              <node name="source">
                <properties>
                  <help>Source parameters</help>
                </properties>
                <children>
                  #include <include/firewall/address.xml.i>
                  #include <include/firewall/fqdn.xml.i>
                  #include <include/firewall/geoip.xml.i>
                  #include <include/firewall/source-destination-group.xml.i>
                  #include <include/firewall/port.xml.i>
                </children>
              </node>
              #include <include/firewall/common-rule.xml.i>
              #include <include/firewall/dscp.xml.i>
              #include <include/firewall/packet-length.xml.i>
              <node name="icmp">
                <properties>
                  <help>ICMP type and code information</help>
                </properties>
                <children>
                  <leafNode name="code">
                    <properties>
                      <help>ICMP code</help>
                      <valueHelp>
                        <format>u32:0-255</format>
                        <description>ICMP code (0-255)</description>
                      </valueHelp>
                      <constraint>
                        <validator name="numeric" argument="--range 0-255"/>
                      </constraint>
                    </properties>
                  </leafNode>
                  <leafNode name="type">
                    <properties>
                      <help>ICMP type</help>
                      <valueHelp>
                        <format>u32:0-255</format>
                        <description>ICMP type (0-255)</description>
                      </valueHelp>
                      <constraint>
                        <validator name="numeric" argument="--range 0-255"/>
                      </constraint>
                    </properties>
                  </leafNode>
                  #include <include/firewall/icmp-type-name.xml.i>
                </children>
              </node>
              <leafNode name="jump-target">
                <properties>
                  <help>Set jump target. Action jump must be defined to use this setting</help>
                  <completionHelp>
                    <path>firewall name</path>
                  </completionHelp>
                </properties>
              </leafNode>
              #include <include/firewall/ttl.xml.i>
            </children>
          </tagNode>
        </children>
      </tagNode>
      <leafNode name="receive-redirects">
        <properties>
          <help>Policy for handling received IPv4 ICMP redirect messages</help>
          <completionHelp>
            <list>enable disable</list>
          </completionHelp>
          <valueHelp>
            <format>enable</format>
            <description>Enable processing of received IPv4 ICMP redirect messages</description>
          </valueHelp>
          <valueHelp>
            <format>disable</format>
            <description>Disable processing of received IPv4 ICMP redirect messages</description>
          </valueHelp>
          <constraint>
            <regex>(enable|disable)</regex>
          </constraint>
        </properties>
        <defaultValue>disable</defaultValue>
      </leafNode>
      <leafNode name="resolver-cache">
        <properties>
          <help>Retains last successful value if domain resolution fails</help>
          <valueless/>
        </properties>
      </leafNode>
      <leafNode name="resolver-interval">
        <properties>
          <help>Domain resolver update interval</help>
          <valueHelp>
            <format>u32:10-3600</format>
            <description>Interval (seconds)</description>
          </valueHelp>
          <constraint>
            <validator name="numeric" argument="--range 10-3600"/>
          </constraint>
        </properties>
        <defaultValue>300</defaultValue>
      </leafNode>
      <leafNode name="send-redirects">
        <properties>
          <help>Policy for sending IPv4 ICMP redirect messages</help>
          <completionHelp>
            <list>enable disable</list>
          </completionHelp>
          <valueHelp>
            <format>enable</format>
            <description>Enable sending IPv4 ICMP redirect messages</description>
          </valueHelp>
          <valueHelp>
            <format>disable</format>
            <description>Disable sending IPv4 ICMP redirect messages</description>
          </valueHelp>
          <constraint>
            <regex>(enable|disable)</regex>
          </constraint>
        </properties>
        <defaultValue>enable</defaultValue>
      </leafNode>
      <leafNode name="source-validation">
        <properties>
          <help>Policy for source validation by reversed path, as specified in RFC3704</help>
          <completionHelp>
            <list>strict loose disable</list>
          </completionHelp>
          <valueHelp>
            <format>strict</format>
            <description>Enable Strict Reverse Path Forwarding as defined in RFC3704</description>
          </valueHelp>
          <valueHelp>
            <format>loose</format>
            <description>Enable Loose Reverse Path Forwarding as defined in RFC3704</description>
          </valueHelp>
          <valueHelp>
            <format>disable</format>
            <description>No source validation</description>
          </valueHelp>
          <constraint>
            <regex>(strict|loose|disable)</regex>
          </constraint>
        </properties>
        <defaultValue>disable</defaultValue>
      </leafNode>
      <node name="state-policy">
        <properties>
          <help>Global firewall state-policy</help>
        </properties>
        <children>
          <node name="established">
            <properties>
              <help>Global firewall policy for packets part of an established connection</help>
            </properties>
            <children>
              #include <include/firewall/action-accept-drop-reject.xml.i>
              #include <include/firewall/log.xml.i>
              #include <include/firewall/rule-log-level.xml.i>
            </children>
          </node>
          <node name="invalid">
            <properties>
              <help>Global firewall policy for packets part of an invalid connection</help>
            </properties>
            <children>
              #include <include/firewall/action-accept-drop-reject.xml.i>
              #include <include/firewall/log.xml.i>
              #include <include/firewall/rule-log-level.xml.i>
            </children>
          </node>
          <node name="related">
            <properties>
              <help>Global firewall policy for packets part of a related connection</help>
            </properties>
            <children>
              #include <include/firewall/action-accept-drop-reject.xml.i>
              #include <include/firewall/log.xml.i>
              #include <include/firewall/rule-log-level.xml.i>
            </children>
          </node>
        </children>
      </node>
      <leafNode name="syn-cookies">
        <properties>
          <help>Policy for using TCP SYN cookies with IPv4</help>
          <completionHelp>
            <list>enable disable</list>
          </completionHelp>
          <valueHelp>
            <format>enable</format>
            <description>Enable use of TCP SYN cookies with IPv4</description>
          </valueHelp>
          <valueHelp>
            <format>disable</format>
            <description>Disable use of TCP SYN cookies with IPv4</description>
          </valueHelp>
          <constraint>
            <regex>(enable|disable)</regex>
          </constraint>
        </properties>
        <defaultValue>enable</defaultValue>
      </leafNode>
      <leafNode name="twa-hazards-protection">
        <properties>
          <help>RFC1337 TCP TIME-WAIT assasination hazards protection</help>
          <completionHelp>
            <list>enable disable</list>
          </completionHelp>
          <valueHelp>
            <format>enable</format>
            <description>Enable RFC1337 TIME-WAIT hazards protection</description>
          </valueHelp>
          <valueHelp>
            <format>disable</format>
            <description>Disable RFC1337 TIME-WAIT hazards protection</description>
          </valueHelp>
          <constraint>
            <regex>(enable|disable)</regex>
          </constraint>
        </properties>
        <defaultValue>disable</defaultValue>
      </leafNode>
      <tagNode name="zone">
        <properties>
          <help>Zone-policy</help>
          <valueHelp>
            <format>txt</format>
            <description>Zone name</description>
          </valueHelp>
          <constraint>
            <regex>[a-zA-Z0-9][\w\-\.]*</regex>
          </constraint>
        </properties>
        <children>
          #include <include/generic-description.xml.i>
          #include <include/firewall/enable-default-log.xml.i>
          <leafNode name="default-action">
            <properties>
              <help>Default-action for traffic coming into this zone</help>
              <completionHelp>
                <list>drop reject</list>
              </completionHelp>
              <valueHelp>
                <format>drop</format>
                <description>Drop silently</description>
              </valueHelp>
              <valueHelp>
                <format>reject</format>
                <description>Drop and notify source</description>
              </valueHelp>
              <constraint>
                <regex>(drop|reject)</regex>
              </constraint>
            </properties>
            <defaultValue>drop</defaultValue>
          </leafNode>
          <tagNode name="from">
            <properties>
              <help>Zone from which to filter traffic</help>
              <completionHelp>
                <path>zone-policy zone</path>
              </completionHelp>
            </properties>
            <children>
              <node name="firewall">
                <properties>
                  <help>Firewall options</help>
                </properties>
                <children>
                  <leafNode name="ipv6-name">
                    <properties>
                      <help>IPv6 firewall ruleset</help>
                      <completionHelp>
                        <path>firewall ipv6-name</path>
                      </completionHelp>
                    </properties>
                  </leafNode>
                  <leafNode name="name">
                    <properties>
                      <help>IPv4 firewall ruleset</help>
                      <completionHelp>
                        <path>firewall name</path>
                      </completionHelp>
                    </properties>
                  </leafNode>
                </children>
              </node>
            </children>
          </tagNode>
          <leafNode name="interface">
            <properties>
              <help>Interface associated with zone</help>
              <valueHelp>
                <format>txt</format>
                <description>Interface associated with zone</description>
              </valueHelp>
              <completionHelp>
                <script>${vyos_completion_dir}/list_interfaces.py</script>
              </completionHelp>
              <multi/>
            </properties>
          </leafNode>
          <node name="intra-zone-filtering">
            <properties>
              <help>Intra-zone filtering</help>
            </properties>
            <children>
              <leafNode name="action">
                <properties>
                  <help>Action for intra-zone traffic</help>
                  <completionHelp>
                    <list>accept drop</list>
                  </completionHelp>
                  <valueHelp>
                    <format>accept</format>
                    <description>Accept traffic</description>
                  </valueHelp>
                  <valueHelp>
                    <format>drop</format>
                    <description>Drop silently</description>
                  </valueHelp>
                  <constraint>
                    <regex>(accept|drop)</regex>
                  </constraint>
                </properties>
              </leafNode>
              <node name="firewall">
                <properties>
                  <help>Use the specified firewall chain</help>
                </properties>
                <children>
                  <leafNode name="ipv6-name">
                    <properties>
                      <help>IPv6 firewall ruleset</help>
                      <completionHelp>
                        <path>firewall ipv6-name</path>
                      </completionHelp>
                    </properties>
                  </leafNode>
                  <leafNode name="name">
                    <properties>
                      <help>IPv4 firewall ruleset</help>
                      <completionHelp>
                        <path>firewall name</path>
                      </completionHelp>
                    </properties>
                  </leafNode>
                </children>
              </node>
            </children>
          </node>
          <leafNode name="local-zone">
            <properties>
              <help>Zone to be local-zone</help>
              <valueless/>
            </properties>
          </leafNode>
        </children>
      </tagNode>
    </children>
  </node>
</interfaceDefinition>