en-US/configure-acl.xml

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<section id="configure-acl">
  <title>Configuring Network Access Control List</title>
  <para>Define Network Access Control List (ACL) on the VPC virtual router to control incoming
    (ingress) and outgoing (egress) traffic between the VPC tiers, and the tiers and Internet. By
    default, all incoming traffic to the guest networks is blocked and all outgoing traffic from
    guest networks is allowed, once you add an ACL rule for outgoing traffic, then only outgoing
    traffic specified in this ACL rule is allowed, the rest is blocked. To open the ports, you must
    create a new network ACL. The network ACLs can be created for the tiers only if the NetworkACL
    service is supported.</para>
  <section id="network-acl">
    <title>About Network ACL Lists</title>
    <para>In &PRODUCT; terminology, Network ACL is a group of Network ACL items. Network ACL items
      are nothing but numbered rules that are evaluated in order, starting with the lowest numbered
      rule. These rules determine whether traffic is allowed in or out of any tier associated with
      the network ACL. You need to add the Network ACL items to the Network ACL, then associate the
      Network ACL with a tier. Network ACL is associated with a VPC and can be assigned to multiple
      VPC tiers within a VPC. A Tier is associated with a Network ACL at all the times. Each tier
      can be associated with only one ACL.</para>
    <para>The default Network ACL is used when no ACL is associated. Default behavior is all the
      incoming traffic is blocked and outgoing traffic is allowed from the tiers. Default network
      ACL cannot be removed or modified. Contents of the default Network ACL is:</para>
    <informaltable>
      <tgroup cols="5" align="left" colsep="1" rowsep="1">
        <colspec colnum="1" colname="c1" colwidth="31.5pt"/>
        <colspec colnum="2" colname="c2" colwidth="58.5pt"/>
        <colspec colnum="3" colname="c3" colwidth="66.0pt"/>
        <colspec colnum="4" colname="c4" colwidth="48.0pt"/>
        <colspec colnum="5" colname="c5" colwidth="58.5pt"/>
        <thead>
          <row>
            <entry><para>Rule</para></entry>
            <entry><para>Protocol</para></entry>
            <entry><para>Traffic type</para></entry>
            <entry><para>Action</para></entry>
            <entry><para>CIDR</para></entry>
          </row>
        </thead>
        <tbody>
          <row>
            <entry><para>1</para></entry>
            <entry><para>All</para></entry>
            <entry><para>Ingress</para></entry>
            <entry><para>Deny</para></entry>
            <entry><para>0.0.0.0/0</para></entry>
          </row>
          <row>
            <entry><para>2</para></entry>
            <entry><para>All</para></entry>
            <entry><para>Egress</para></entry>
            <entry><para>Deny</para></entry>
            <entry><para>0.0.0.0/0</para></entry>
          </row>
        </tbody>
      </tgroup>
    </informaltable>
  </section>
  <section id="acl-list">
    <title>Creating ACL Lists</title>
    <orderedlist>
      <listitem>
        <para>Log in to the &PRODUCT; UI as an administrator or end user.</para>
      </listitem>
      <listitem>
        <para>In the left navigation, choose Network.</para>
      </listitem>
      <listitem>
        <para>In the Select view, select VPC.</para>
        <para>All the VPCs that you have created for the account is listed in the page.</para>
      </listitem>
      <listitem>
        <para>Click the Configure button of the VPC.</para>
        <para>For each tier, the following options are displayed:</para>
        <itemizedlist>
          <listitem>
            <para>Internal LB</para>
          </listitem>
          <listitem>
            <para>Public LB IP</para>
          </listitem>
          <listitem>
            <para>Static NAT</para>
          </listitem>
          <listitem>
            <para>Virtual Machines</para>
          </listitem>
          <listitem>
            <para>CIDR</para>
          </listitem>
        </itemizedlist>
        <para>The following router information is displayed:</para>
        <itemizedlist>
          <listitem>
            <para>Private Gateways</para>
          </listitem>
          <listitem>
            <para>Public IP Addresses</para>
          </listitem>
          <listitem>
            <para>Site-to-Site VPNs</para>
          </listitem>
          <listitem>
            <para>Network ACL Lists</para>
          </listitem>
        </itemizedlist>
      </listitem>
      <listitem>
        <para>Select Network ACL Lists.</para>
        <para>The following default rules are displayed in the Network ACLs page: default_allow,
          default_deny.</para>
      </listitem>
      <listitem>
        <para>Click Add ACL Lists, and specify the following:</para>
        <itemizedlist>
          <listitem>
            <para><emphasis role="bold">ACL List Name</emphasis>: A name for the ACL list.</para>
          </listitem>
          <listitem>
            <para><emphasis role="bold">Description</emphasis>: A short description of the ACL list
              that can be displayed to users.</para>
          </listitem>
        </itemizedlist>
      </listitem>
    </orderedlist>
  </section>
  <section id="add-acl-rule">
    <title>Creating an ACL Rule</title>
    <orderedlist>
      <listitem>
        <para>Log in to the &PRODUCT; UI as an administrator or end user.</para>
      </listitem>
      <listitem>
        <para>In the left navigation, choose Network.</para>
      </listitem>
      <listitem>
        <para>In the Select view, select VPC.</para>
        <para>All the VPCs that you have created for the account is listed in the page.</para>
      </listitem>
      <listitem>
        <para>Click the Configure button of the VPC.</para>
      </listitem>
      <listitem>
        <para>Select Network ACL Lists.</para>
        <para>In addition to the custom ACL lists you have created, the following default rules are
          displayed in the Network ACLs page: default_allow, default_deny.</para>
      </listitem>
      <listitem>
        <para>Select the desired ACL list.</para>
      </listitem>
      <listitem>
        <para>Select the ACL List Rules tab.</para>
        <para>To add an ACL rule, fill in the following fields to specify what kind of network
          traffic is allowed in the VPC. </para>
        <itemizedlist>
          <listitem>
            <para><emphasis role="bold">Rule Number</emphasis>: The order in which the rules are
              evaluated.</para>
          </listitem>
          <listitem>
            <para><emphasis role="bold">CIDR</emphasis>: The CIDR acts as the Source CIDR for the
              Ingress rules, and Destination CIDR for the Egress rules. To accept traffic only from
              or to the IP addresses within a particular address block, enter a CIDR or a
              comma-separated list of CIDRs. The CIDR is the base IP address of the incoming
              traffic. For example, 192.168.0.0/22. To allow all CIDRs, set to 0.0.0.0/0.</para>
          </listitem>
          <listitem>
            <para><emphasis role="bold">Action</emphasis>: What action to be taken. Allow traffic or
              block.</para>
          </listitem>
          <listitem>
            <para><emphasis role="bold">Protocol</emphasis>: The networking protocol that sources
              use to send traffic to the tier. The TCP and UDP protocols are typically used for data
              exchange and end-user communications. The ICMP protocol is typically used to send
              error messages or network monitoring data. All supports all the traffic. Other option
              is Protocol Number.</para>
          </listitem>
          <listitem>
            <para><emphasis role="bold">Start Port</emphasis>, <emphasis role="bold">End
                Port</emphasis> (TCP, UDP only): A range of listening ports that are the destination
              for the incoming traffic. If you are opening a single port, use the same number in
              both fields.</para>
          </listitem>
          <listitem>
            <para><emphasis role="bold">Protocol Number</emphasis>: The protocol number associated
              with IPv4 or IPv6. For more information, see <ulink
                url="http://www.iana.org/assignments/protocol-numbers/protocol-numbers.xml">Protocol
                Numbers</ulink>.</para>
          </listitem>
          <listitem>
            <para><emphasis role="bold">ICMP Type</emphasis>, <emphasis role="bold">ICMP
                Code</emphasis> (ICMP only): The type of message and error code that will be
              sent.</para>
          </listitem>
          <listitem>
            <para><emphasis role="bold">Traffic Type</emphasis>: The type of traffic: Incoming or
              outgoing.</para>
          </listitem>
        </itemizedlist>
      </listitem>
      <listitem>
        <para>Click Add. The ACL rule is added.</para>
        <para>You can edit the tags assigned to the ACL rules and delete the ACL rules you have
          created. Click the appropriate button in the Details tab.</para>
      </listitem>
    </orderedlist>
  </section>
  <section id="create-acl-tier">
    <title>Creating a Tier with Custom ACL List</title>
    <orderedlist>
      <listitem>
        <para>Create a VPC.</para>
      </listitem>
      <listitem>
        <para>Create a custom ACL list.</para>
      </listitem>
      <listitem>
        <para>Add ACL rules to the ACL list.</para>
      </listitem>
      <listitem>
        <para>Create a tier in the VPC.</para>
        <para>Select the desired ACL list while creating a tier.</para>
      </listitem>
      <listitem>
        <para>Click OK.</para>
      </listitem>
    </orderedlist>
  </section>
  <section id="assign-acl-tier">
    <title>Assigning a Custom ACL List to a Tier</title>
    <orderedlist>
      <listitem>
        <para>Create a VPC.</para>
      </listitem>
      <listitem>
        <para>Create a tier in the VPC.</para>
      </listitem>
      <listitem>
        <para>Associate the tier with the default ACL rule.</para>
      </listitem>
      <listitem>
        <para>Create a custom ACL list.</para>
      </listitem>
      <listitem>
        <para>Add ACL rules to the ACL list.</para>
      </listitem>
      <listitem>
        <para>Select the tier for which you want to assign the custom ACL.</para>
      </listitem>
      <listitem>
        <para>Click the Replace ACL List icon.<inlinemediaobject>
            <imageobject>
              <imagedata fileref="./images/replace-acl-icon.png"/>
            </imageobject>
            <textobject>
              <phrase>replace-acl-icon.png: button to replace an ACL list</phrase>
            </textobject>
          </inlinemediaobject></para>
        <para>The Replace ACL List dialog is displayed.</para>
      </listitem>
      <listitem>
        <para>Select the desired ACL list.</para>
      </listitem>
      <listitem>
        <para>Click OK.</para>
      </listitem>
    </orderedlist>
  </section>
</section>