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| <section id="firewall-rules"> |
| <title>Firewall Rules</title> |
| <para>By default, all incoming traffic to the public IP address is rejected by the firewall. To |
| allow external traffic, you can open firewall ports by specifying firewall rules. You can |
| optionally specify one or more CIDRs to filter the source IPs. This is useful when you want to |
| allow only incoming requests from certain IP addresses.</para> |
| <para>You cannot use firewall rules to open ports for an elastic IP address. When elastic IP is |
| used, outside access is instead controlled through the use of security groups. See <xref |
| linkend="add-security-group"/>.</para> |
| <para>In an advanced zone, you can also create egress firewall rules by using the virtual router. |
| For more information, see <xref linkend="egress-firewall-rule"/>.</para> |
| <para>Firewall rules can be created using the Firewall tab in the Management Server UI. This tab |
| is not displayed by default when &PRODUCT; is installed. To display the Firewall tab, the |
| &PRODUCT; administrator must set the global configuration parameter firewall.rule.ui.enabled to |
| "true."</para> |
| <para>To create a firewall rule:</para> |
| <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>Click the name of the network where you want to work with.</para> |
| </listitem> |
| <listitem> |
| <para>Click View IP Addresses.</para> |
| </listitem> |
| <listitem> |
| <para>Click the IP address you want to work with.</para> |
| </listitem> |
| <listitem> |
| <para>Click the Configuration tab and fill in the following values.</para> |
| <itemizedlist> |
| <listitem> |
| <para><emphasis role="bold">Source CIDR</emphasis>. (Optional) To accept only traffic from |
| IP addresses within a particular address block, enter a CIDR or a comma-separated list |
| of CIDRs. Example: 192.168.0.0/22. Leave empty to allow all CIDRs.</para> |
| </listitem> |
| <listitem> |
| <para><emphasis role="bold">Protocol</emphasis>. The communication protocol in use on the |
| opened port(s).</para> |
| </listitem> |
| <listitem> |
| <para><emphasis role="bold">Start Port and End Port</emphasis>. The port(s) you want to |
| open on the firewall. If you are opening a single port, use the same number in both |
| fields</para> |
| </listitem> |
| <listitem> |
| <para><emphasis role="bold">ICMP Type and ICMP Code</emphasis>. Used only if Protocol is |
| set to ICMP. Provide the type and code required by the ICMP protocol to fill out the |
| ICMP header. Refer to ICMP documentation for more details if you are not sure what to |
| enter</para> |
| </listitem> |
| </itemizedlist> |
| </listitem> |
| <listitem> |
| <para>Click Add.</para> |
| </listitem> |
| </orderedlist> |
| </section> |