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2.8 KiB
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>15.14. IP Forwarding and Firewalling</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Admin_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Administrator's Guide" /><link rel="up" href="networks.html" title="Chapter 15. Managing Networks and Traffic" /><link rel="prev" href="static-nat.html" title="15.13. Static NAT" /><link rel="next" href="ip-load-balancing.html" title="15.15. IP Load Balancing" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right" href="http://docs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="static-nat.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="ip-load-balancing.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="ip-forwarding-firewalling" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="ip-forwarding-firewalling">15.14. IP Forwarding and Firewalling</h2></div></div></div><div class="para">
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By default, all incoming traffic to the public IP address is rejected. All outgoing traffic from the guests is translated via NAT to the public IP address and is allowed.
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To allow incoming traffic, users may set up firewall rules and/or port forwarding rules. For example, you can use a firewall rule to open a range of ports on the public IP address, such as 33 through 44. Then use port forwarding rules to direct traffic from individual ports within that range to specific ports on user VMs. For example, one port forwarding rule could route incoming traffic on the public IP's port 33 to port 100 on one user VM's private IP.
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For the steps to implement these rules, see Firewall Rules and Port Forwarding.
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</div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="static-nat.html"><strong>Prev</strong>15.13. Static NAT</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="ip-load-balancing.html"><strong>Next</strong>15.15. IP Load Balancing</a></li></ul></body></html>
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