Symbian3/PDK/Source/GUID-21F92FAD-1EF1-4E36-9157-9214E7C6BB01.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Fri, 22 Jan 2010 18:26:19 +0000
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permissions -rw-r--r--
Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- This component and the accompanying materials are made available under the terms of the License 
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"Eclipse Public License v1.0" which accompanies this distribution, 
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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Contributors: 
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-->
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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="GUID-21F92FAD-1EF1-4E36-9157-9214E7C6BB01" xml:lang="en"><title>Host
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name resolution</title><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>Sometimes it is necessary to authenticate the remote device that is
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connected through a public IP network. You can do this by querying and comparing
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the <i>domain name system</i> (DNS) name of the device to its IP address.
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To perform host resolve queries to both directions, use the <codeph><xref href="jar:GUID-35228542-8C95-4849-A73F-2B4F082F0C44.jar!/sdk/doc_source/reference/reference-cpp/ESock_Server/RHostResolverClass.html" format="application/java-archive">RHostResolver</xref></codeph> class. </p>
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<p>Note that this is not a secure way to authenticate remote devices, because
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some clients (for example, in a local network) may not have DNS names at all
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. For reliable authentication and secure communication, use stronger methods
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like key exchange or secure protocol solutions.</p>
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</conbody></concept>