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	<title>The IT Stuff &#187; nat</title>
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		<title>Why NAT (Advantages &amp; Disadvantages)</title>
		<link>http://www.theitstuff.com/cisco/ccnp/why-nat-advantages-disadvantages/</link>
		<comments>http://www.theitstuff.com/cisco/ccnp/why-nat-advantages-disadvantages/#comments</comments>
		<pubDate>Wed, 28 Jan 2009 10:14:12 +0000</pubDate>
		<dc:creator>Networking World</dc:creator>
				<category><![CDATA[CCNA]]></category>
		<category><![CDATA[CCNP]]></category>
		<category><![CDATA[LAN]]></category>
		<category><![CDATA[TCP/IP]]></category>
		<category><![CDATA[CISCO]]></category>
		<category><![CDATA[nat]]></category>

		<guid isPermaLink="false">http://www.theitstuff.com/?p=1325</guid>
		<description><![CDATA[NAT can take a single IP address and distribute it for use of many users by creating a Local Area Network (LAN).The LAN will share a single globally recognized IP address.
Disadvantages:

Translation sometime complex (e.g. FTP, VOIP).
Apps using dynamic ports (UPnP).
Does not scale (today avg. of 500 active sessions per user).
Introduce states inside the network:
Multi-homed networks
Breaks [...]]]></description>
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