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<h1 class="topictitle1">Tips for using NAWT with WebSphere Application Server</h1>
<div><p>Set up NAWT for use by graphical Java™ programs running under WebSphere<sup>®</sup> Application
Server. When you use WebSphere Application Server and NAWT, you need
to enable secure communications between the Virtual Network Computing (VNC)
server and WebSphere Application
Server.</p>
<p> Before reading the following information, make sure that you understand
how to install and use the Native Abstract Windowing Toolkit (NAWT) on your iSeries™ server.
In particular, you need to know how to use NAWT with the version of the Java 2
Software Development Kit (J2SDK) and <span class="keyword">i5/OS™</span> release
that you use.</p>
<div class="section"><h4 class="sectiontitle"> Ensuring secure communications</h4><p>A method called
X authority checking ensures secure communications between WebSphere Application
Server and the VNC server.</p>
<p>The process of starting the VNC server creates
an .Xauthority file that contains encrypted key information. Secure communications
between WebSphere Application
Server and VNC <strong>REQUIRES</strong> that both WebSphere Application Server and VNC
have access to the encrypted key information in the .Xauthority file.</p>
</div>
<div class="section"><h4 class="sectiontitle">Using X authority checking</h4><p>Use one of the following
methods to use X authority checking:</p>
<p><strong>Run WebSphere Application Server and VNC
using the same profile</strong></p>
<p>One way that you can ensure secure communications
between WebSphere Application
Server and the VNC server is by running WebSphere Application Server from
the same profile that you use to start the VNC server. To run WebSphere Application
Server and VNC the with same profile, you must change the user profile under
which the application server runs.</p>
<p>To switch the user profile for the
application server from the default user (QEJBSVR) to a different profile,
you must perform the following actions:</p>
<ol><li>Use the WebSphere Application
Server administrative console to change the application server configuration</li>
<li>Use iSeries Navigator
to enable the new profile</li>
</ol>
<p>For information about using the WebSphere Application Server administrative
console and iSeries Navigator,
see the following documentation:</p>
<p><a href="http://www.ibm.com/servers/eserver/iseries/software/websphere/wsappserver/docs/doc.htm" target="_blank"> WebSphere Application Server</a></p>
<p><a href="../rzaih/rzaihuseradmin.htm" target="_blank">Manage
users and groups with Management Central</a></p>
<p><strong>Run WebSphere Application
Server and VNC using different profiles</strong></p>
<p>When you want WebSphere Application
Server and VNC to use different profiles, you can ensure secure communications
by having WebSphere Application
Server use the .Xauthority file.</p>
<p>To enable WebSphere Application Server to use
the .Xauthority file, complete the following steps:</p>
<ol><li>Create a new .Xauthority file (or update an existing .Xauthority file)
by starting the VNC server from your user profile. From an <span class="keyword">i5/OS</span> control
language (CL) command line, type the following command and press <strong>ENTER</strong>:
<pre> CALL QP2SHELL PARM('/QOpenSys/QIBM/ProdData/DeveloperTools/vnc/vncserver_java' ':<em>n</em>')</pre>
where <em>n</em> is the display number (a numeric value in the range of 1-99).
<p><strong>Note:</strong> The .Xauthority file resides in the directory for the
profile under which you are running the VNC server.</p>
</li>
<li>Use the following CL commands to grant the profile under which you run WebSphere Application
Server the authority to read the .Xauthority file: <pre> CHGAUT OBJ('/home') USER(<em>WASprofile</em>) DTAAUT(*RX)
CHGAUT OBJ('/home/<em>VNCprofile</em>') USER(<em>WASprofile</em>) DTAAUT(*RX)
CHGAUT OBJ('/home/<em>VNCprofile</em>/.Xauthority') USER(<em>WASprofile</em>) DTAAUT(*R)</pre>
<div class="p">where <em>VNCprofile</em> and <em>WASprofile</em> are the appropriate
profiles under which you are running the VNC server and WebSphere Application
Server.<div class="note"><span class="notetitle">Note:</span> <img src="./delta.gif" alt="Start of change" />You should only follow these steps when the <em>VNCprofile</em> and <em>WASprofile</em> are
different profiles. Following these steps when <em>VNCprofile</em> and <em>WASprofile</em> are
the same profile can cause VNC to not function correctly.<img src="./deltaend.gif" alt="End of change" /></div>
</div>
</li>
<li>From the WebSphere Application
Server administrative console, define the DISPLAY and XAUTHORITY environment
variables for your application: <ul><li>For DISPLAY, use either: <kbd class="userinput">system:n</kbd> or <kbd class="userinput">localhost:n</kbd>
<p>where <em>system</em> is the name or IP address of your iSeries system
and <em>n</em> is the display number that you used to start the VNC server.</p>
</li>
<li>For XAUTHORITY, use: <kbd class="userinput">/home/VNCprofile/.Xauthority</kbd>
<p>where <em>VNCprofile</em> is the profile that started the VNC server.</p>
</li>
</ul>
</li>
<li>Pick up the configuration changes by restarting WebSphere Application Server.</li>
</ol>
<p>For information about using the WebSphere Application Server administrative
console, see the following documentation:</p>
<p><a href="http://www.ibm.com/servers/eserver/iseries/software/websphere/wsappserver/docs/doc.htm" target="_blank">WebSphere Application Server</a></p>
</div>
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<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="nawt.htm" title="The Native Abstract Windowing Toolkit (NAWT) provides Java applications and servlets with the capability to use the Abstract Windowing Toolkit (AWT) graphics function offered by the Java 2 Software Development Kit (J2SDK), Standard Edition.">Native Abstract Windowing Toolkit</a></div>
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