<?xml version="1.0"?>
<interfaceDefinition>
  <node name="vpn">
    <children>
      <node name="l2tp" owner="${vyos_conf_scripts_dir}/vpn_l2tp.py">
        <properties>
          <help>L2TP Virtual Private Network (VPN)</help>
        </properties>
        <children>
          <node name="remote-access">
            <properties>
              <help>Remote access L2TP VPN</help>
            </properties>
            <children>
              #include <include/accel-ppp/mtu-128-16384.xml.i>
              <leafNode name="outside-address">
                <properties>
                  <help>External IP address to which VPN clients will connect</help>
                  <constraint>
                    <validator name="ipv4-address"/>
                  </constraint>
                </properties>
              </leafNode>
              #include <include/accel-ppp/gateway-address.xml.i>
              #include <include/accel-ppp/name-server.xml.i>
              <node name="lns">
                <properties>
                  <help>L2TP Network Server (LNS)</help>
                </properties>
                <children>
                  <leafNode name="shared-secret">
                    <properties>
                      <help>Tunnel password used to authenticate the client (LAC)</help>
                    </properties>
                  </leafNode>
                </children>
              </node>
              <leafNode name="ccp-disable">
                <properties>
                  <help>Disable Compression Control Protocol (CCP)</help>
                  <valueless />
                </properties>
              </leafNode>
              <node name="ipsec-settings">
                <properties>
                  <help>Internet Protocol Security (IPsec) for remote access L2TP VPN</help>
                </properties>
                <children>
                  <node name="authentication">
                    <properties>
                      <help>IPsec authentication settings</help>
                    </properties>
                    <children>
                      <leafNode name="mode">
                        <properties>
                          <help>Authentication mode for IPsec</help>
                          <valueHelp>
                            <format>pre-shared-secret</format>
                            <description>Use pre-shared secret for IPsec authentication</description>
                          </valueHelp>
                          <valueHelp>
                            <format>x509</format>
                            <description>Use X.509 certificate for IPsec authentication</description>
                          </valueHelp>
                          <constraint>
                            <regex>^(pre-shared-secret|x509)$</regex>
                          </constraint>
                          <completionHelp>
                            <list>pre-shared-secret x509</list>
                          </completionHelp>
                        </properties>
                      </leafNode>
                      <leafNode name="pre-shared-secret">
                        <properties>
                          <help>Pre-shared secret for IPsec</help>
                        </properties>
                      </leafNode>
                      <node name="x509">
                        <properties>
                          <help>X.509 certificate</help>
                        </properties>
                        <children>
                          #include <include/certificate-ca.xml.i>
                          <leafNode name="crl-file">
                            <properties>
                              <help>File containing the X.509 Certificate Revocation List (CRL)</help>
                              <valueHelp>
                                <format>txt</format>
                                <description>File in /config/auth</description>
                              </valueHelp>
                            </properties>
                          </leafNode>
                          <leafNode name="server-cert-file">
                            <properties>
                              <help>File containing the X.509 certificate for the remote access VPN server (this host)</help>
                              <valueHelp>
                                <format>txt</format>
                                <description>File in /config/auth</description>
                              </valueHelp>
                            </properties>
                          </leafNode>
                          <leafNode name="server-key-file">
                            <properties>
                              <help>File containing the private key for the X.509 certificate for the remote access VPN server (this host)</help>
                              <valueHelp>
                                <format>txt</format>
                                <description>File in /config/auth</description>
                              </valueHelp>
                            </properties>
                          </leafNode>
                          <leafNode name="server-key-password">
                            <properties>
                              <help>Password that protects the private key</help>
                            </properties>
                          </leafNode>
                        </children>
                      </node>
                    </children>
                  </node>
                  <leafNode name="ike-lifetime">
                    <properties>
                      <help>IKE lifetime</help>
                      <valueHelp>
                        <format>u32:30-86400</format>
                        <description>IKE lifetime in seconds (default 3600)</description>
                      </valueHelp>
                      <constraint>
                        <validator name="numeric" argument="--range 30-86400"/>
                      </constraint>
                    </properties>
                  </leafNode>
                   <leafNode name="lifetime">
                    <properties>
                      <help>ESP lifetime</help>
                      <valueHelp>
                        <format>u32:30-86400</format>
                        <description>IKE lifetime in seconds (default 3600)</description>
                      </valueHelp>
                      <constraint>
                        <validator name="numeric" argument="--range 30-86400"/>
                      </constraint>
                    </properties>
                  </leafNode>
                </children>
              </node>
              #include <include/accel-ppp/wins-server.xml.i>
              <node name="client-ip-pool">
                <properties>
                  <help>Pool of client IP addresses (must be within a /24)</help>
                </properties>
                <children>
                  #include <include/accel-ppp/client-ip-pool-start-stop.xml.i>
                  #include <include/accel-ppp/client-ip-pool-subnet.xml.i>
                </children>
              </node>
              #include <include/accel-ppp/client-ipv6-pool.xml.i>
              <leafNode name="description">
                <properties>
                  <help>Description for L2TP remote-access settings</help>
                </properties>
              </leafNode>
              <leafNode name="dhcp-interface">
                <properties>
                  <help>DHCP interface to listen on</help>
                </properties>
              </leafNode>
              <leafNode name="idle">
                <properties>
                  <help>PPP idle timeout</help>
                  <valueHelp>
                    <format>u32:30-86400</format>
                    <description>PPP idle timeout in seconds (default 1800)</description>
                  </valueHelp>
                    <constraint>
                      <validator name="numeric" argument="--range 30-86400"/>
                    </constraint>
                </properties>
              </leafNode>
              <node name="authentication">
                <properties>
                  <help>Authentication for remote access L2TP VPN</help>
                </properties>
                <children>
                  <leafNode name="require">
                    <properties>
                      <help>Authentication protocol for remote access peer L2TP VPN</help>
                      <valueHelp>
                        <format>pap</format>
                        <description>Require the peer to authenticate itself using PAP [Password Authentication Protocol].</description>
                      </valueHelp>
                      <valueHelp>
                        <format>chap</format>
                        <description>Require the peer to authenticate itself using CHAP [Challenge Handshake Authentication Protocol].</description>
                      </valueHelp>
                      <valueHelp>
                        <format>mschap</format>
                        <description>Require the peer to authenticate itself using CHAP [Challenge Handshake Authentication Protocol].</description>
                      </valueHelp>
                      <valueHelp>
                        <format>mschap-v2</format>
                        <description>Require the peer to authenticate itself using MS-CHAPv2 [Microsoft Challenge Handshake Authentication Protocol, Version 2].</description>
                      </valueHelp>
                      <constraint>
                        <regex>^(pap|chap|mschap|mschap-v2)$</regex>
                      </constraint>
                      <completionHelp>
                        <list>pap chap mschap mschap-v2</list>
                      </completionHelp>
                      <multi />
                    </properties>
                  </leafNode>
                  #include <include/accel-ppp/ppp-mppe.xml.i>
                  #include <include/accel-ppp/auth-mode.xml.i>
                  #include <include/accel-ppp/auth-local-users.xml.i>
                  #include <include/radius-server-ipv4.xml.i>
                  <node name="radius">
                    <children>
                      <tagNode name="server">
                        <children>
                          #include <include/accel-ppp/radius-additions-disable-accounting.xml.i>
                          <leafNode name="fail-time">
                            <properties>
                              <help>Mark server unavailable for &lt;n&gt; seconds on failure</help>
                              <valueHelp>
                                <format>0-600</format>
                                <description>Fail time penalty</description>
                              </valueHelp>
                              <constraint>
                                <validator name="numeric" argument="--range 0-600"/>
                              </constraint>
                              <constraintErrorMessage>Fail time must be between 0 and 600 seconds</constraintErrorMessage>
                            </properties>
                          </leafNode>
                        </children>
                      </tagNode>
                      <leafNode name="timeout">
                        <properties>
                          <help>Timeout to wait response from server (seconds)</help>
                        </properties>
                      </leafNode>
                      <leafNode name="acct-timeout">
                        <properties>
                          <help>Timeout to wait reply for Interim-Update packets. (default 3 seconds)</help>
                        </properties>
                      </leafNode>
                      <leafNode name="max-try">
                        <properties>
                          <help>Maximum number of tries to send Access-Request/Accounting-Request queries</help>
                        </properties>
                      </leafNode>
                      <leafNode name="nas-identifier">
                        <properties>
                          <help>Value to send to RADIUS server in NAS-Identifier attribute and to be matched in DM/CoA requests.</help>
                        </properties>
                      </leafNode>
                      <node name="dae-server">
                        <properties>
                          <help>IPv4 address and port to bind Dynamic Authorization Extension server (DM/CoA)</help>
                        </properties>
                        <children>
                          <leafNode name="ip-address">
                            <properties>
                              <help>IP address for Dynamic Authorization Extension server (DM/CoA)</help>
                            </properties>
                          </leafNode>
                          <leafNode name="port">
                            <properties>
                              <help>Port for Dynamic Authorization Extension server (DM/CoA)</help>
                            </properties>
                          </leafNode>
                          <leafNode name="secret">
                            <properties>
                              <help>Secret for Dynamic Authorization Extension server (DM/CoA)</help>
                            </properties>
                          </leafNode>
                        </children>
                      </node>
                      <node name="rate-limit">
                        <properties>
                          <help>Upload/Download speed limits</help>
                        </properties>
                        <children>
                          <leafNode name="attribute">
                            <properties>
                              <help>Specifies which radius attribute contains rate information. (default is Filter-Id)</help>
                            </properties>
                          </leafNode>
                          <leafNode name="vendor">
                            <properties>
                              <help>Specifies the vendor dictionary. (dictionary needs to be in /usr/share/accel-ppp/radius)</help>
                            </properties>
                          </leafNode>
                          <leafNode name="enable">
                            <properties>
                              <help>Enables Bandwidth shaping via RADIUS</help>
                              <valueless />
                            </properties>
                          </leafNode>
                        </children>
                      </node>
                    </children>
                  </node>
                </children>
              </node>
              <node name="ppp-options">
                <properties>
                  <help>Advanced protocol options</help>
                </properties>
                <children>
                  #include <include/accel-ppp/lcp-echo-interval-failure.xml.i>
                </children>
              </node>
            </children>
          </node>
        </children>
      </node>
    </children>
  </node>
</interfaceDefinition>