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35 lines
2.1 KiB
XML
35 lines
2.1 KiB
XML
<?xml version='1.0' encoding='utf-8' ?>
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<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % BOOK_ENTITIES SYSTEM "cloudstack.ent">
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%BOOK_ENTITIES;
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]>
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<!-- Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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<section id="ip-forwarding-firewalling">
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<title>IP Forwarding and Firewalling</title>
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<para>By default, all incoming traffic to the public IP address is rejected.
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All outgoing traffic from the guests is also blocked by default.</para>
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<para>To allow outgoing traffic, follow the procedure in <xref linkend="egress-firewall-rule"/>.</para>
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<para>To allow incoming traffic, users may set up firewall rules and/or port forwarding rules. For
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example, you can use a firewall rule to open a range of ports on the public IP address, such as
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33 through 44. Then use port forwarding rules to direct traffic from individual ports within
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that range to specific ports on user VMs. For example, one port forwarding rule could route
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incoming traffic on the public IP's port 33 to port 100 on one user VM's private IP.</para>
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<xi:include href="egress-firewall-rule.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
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<xi:include href="firewall-rules.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
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<xi:include href="port-forwarding.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
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</section>
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