mirror of
https://github.com/apache/cloudstack.git
synced 2025-12-18 11:34:23 +01:00
51 lines
2.4 KiB
XML
51 lines
2.4 KiB
XML
<?xml version='1.0' encoding='utf-8' ?>
|
|
<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
|
|
<!ENTITY % BOOK_ENTITIES SYSTEM "Release_Notes.ent">
|
|
%BOOK_ENTITIES;
|
|
]>
|
|
<section id="ongoing-configuration-of-external-firewalls-loadbalancer" lang="en-US">
|
|
<!-- Licensed to the Apache Software Foundation (ASF) under one
|
|
or more contributor license agreements. See the NOTICE file
|
|
distributed with this work for additional information
|
|
regarding copyright ownership. The ASF licenses this file
|
|
to you under the Apache License, Version 2.0 (the
|
|
"License"); you may not use this file except in compliance
|
|
with the License. You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing,
|
|
software distributed under the License is distributed on an
|
|
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
KIND, either express or implied. See the License for the
|
|
specific language governing permissions and limitations
|
|
under the License.
|
|
--> <title>Ongoing Configuration of External Firewalls and Load Balancers</title>
|
|
<para>
|
|
Additional user actions (e.g. setting a port forward) will cause further programming of the firewall and load balancer. A user may request additional public IP addresses and forward traffic received at these IPs to specific VMs. This is accomplished by enabling static NAT for a public IP address, assigning the IP to a VM, and specifying a set of protocols and port ranges to open. When a static NAT rule is created, &PRODUCT; programs the zone's external firewall with the following objects:
|
|
</para>
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para>
|
|
A static NAT rule that maps the public IP address to the private IP address of a VM.
|
|
</para>
|
|
</listitem>
|
|
<listitem>
|
|
<para>
|
|
A security policy that allows traffic within the set of protocols and port ranges that are specified.
|
|
</para>
|
|
</listitem>
|
|
<listitem>
|
|
<para>
|
|
A firewall filter counter that measures the number of bytes of incoming traffic to the public IP.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
<para>
|
|
The number of incoming and outgoing bytes through source NAT, static NAT, and load balancing rules is measured and saved on each external element. This data is collected on a regular basis and stored in the &PRODUCT; database.
|
|
</para>
|
|
</section>
|
|
|
|
|