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              <blockquote>
                <div class="N1H-Heading1"><a name="597162">Integrating Web Security with Squid Web Proxy Cache</a></div>
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                  <span class="Heading_Number"></span><a name="607862">Applies to</a></div>
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                        <div class="B1-Bullet1_inner"><a name="607863">Web Filter v7.6</a></div>
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                        <div class="B1-Bullet1_inner"><a name="607864">Web Security v7.6</a></div>
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                <div class="N2HN-HeadNoTopic2">
                  <span class="Heading_Number"></span><a name="609145">In this topic</a></div>
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                      <td width="100%">
                        <div class="B1-Bullet_inner"><span class="LEM-LinkEmphasis"><a href="#609152" title="Integrating Web Security with Squid Web Proxy Cache" name="609174">Overview</a></span></div>
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                        <div class="B1-Bullet_inner"><span class="LEM-LinkEmphasis"><a href="#595237" title="Integrating Web Security with Squid Web Proxy Cache" name="609190">Single Squid Web Proxy Cache configuration</a></span></div>
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                        <div class="B1-Bullet_inner"><span class="LEM-LinkEmphasis"><a href="#595257" title="Integrating Web Security with Squid Web Proxy Cache" name="609200">Array configuration</a></span></div>
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                  <span class="Heading_Number"></span><a name="609152">Overview</a></div>
                <div class="B-Body"><a name="597147">Websense filtering components can be installed on the same machine as Squid Web </a>Proxy Cache, on a separate machine, or on multiple machines. Squid Web Proxy Cache machines may be deployed in an array to share the load in a larger network. A Websense Squid redirector plug-in must be installed on each machine running Squid Web Proxy Cache.</div>
                <div class="N2HN-HeadNoTopic2">
                  <span class="Heading_Number"></span><a name="595237">Single Squid Web Proxy Cache configuration</a></div>
                <div class="B-Body"><a name="595238">The following illustration shows the Websense filtering components, the Websense </a>redirector plug-in, and Squid Web Proxy Cache running on the same machine. You can also install a Websense transparent identification agent on the same machine, or on a separate machine. </div>
                <div class="F-Frame"><a name="609912"><img class="Default" src="images/Squid_On-Box.gif" width="554" height="536" style="display: block; float: none; left: 0.0; top: 0.0" alt="" /></a></div>
                <div class="B-Body"><a name="604764">The diagram provides a general overview and best practice location for your </a>integration product, but does not show all Websense components. Larger networks require Websense components to be distributed across several dedicated machines.</div>
                <div class="B-Body"><a name="597185">An alternative deployment places all Websense filtering components on a separate </a>machine from Squid Web Proxy Cache. This configuration eases the load on the Squid Web Proxy Cache machine.</div>
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                        <div class="B1-Bullet1_inner"><a name="598553">The Websense redirector plug-in must be installed on the Squid Web Proxy Cache </a>machine to enable communication with Filtering Service.</div>
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                        <div class="B1-Bullet1_inner"><a name="599863">The Filtering Service and Squid Web Proxy Cache machines must be able to </a>communicate over the network</div>
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                  <span class="Heading_Number"></span><a name="595257">Array configuration</a></div>
                <div class="B-Body"><a name="595258">Websense software is compatible with most array configurations, including Cache </a>Array Routing Protocol (CARP) arrays. If the Squid Web Proxy Cache machines in an array can run Websense software without a performance impact, install the main Websense filtering components on one of the array machines.</div>
                <div class="B-Body"><a name="595259">The following illustration shows the Websense filtering components running on a </a>Squid Web Proxy Cache machine, with Websense reporting components on a separate machine.</div>
                <div class="F-Frame"><a name="597772"><img class="Default" src="images/Squid_Array1.gif" width="611" height="575" style="display: block; float: none; left: 0.0; top: 0.0" alt="" /></a></div>
                <div class="B-Body"><a name="604800">The diagram provides a general overview and best practice location for your </a>integration product, but does not show all Websense components. Larger networks require Websense components to be distributed across several dedicated machines.</div>
                <div class="B-Body"><a name="597775">If installing Websense filtering components on the Squid Web Proxy Cache machine </a>is likely to have a performance impact, install Websense software on a separate machine outside the array, and then install the Websense redirector plug-in on each member of the array. See the following illustration.</div>
                <div class="B-Body"><a name="598577">When Websense software is installed in this configuration, all array members send </a>Internet requests to Filtering Service outside the array.</div>
                <div class="F-Frame"><a name="595269"><img class="Default" src="images/Squid_Array2.gif" width="610" height="581" style="display: block; float: none; left: 0.0; top: 0.0" alt="" /></a></div>
                <div class="B-Body"><a name="595271">Other configurations are possible. See your Squid Web Proxy Cache documentation </a>for information about array configurations. See <span class="LEM-LinkEmphasis"><a href="dic_ws_int_squid_2.aspx#579684" title="Squid Web Proxy Cache Integration">Squid Web Proxy Cache Integration</a></span> Websense software configuration instructions.</div>
                <div class="B-Body"><a name="604852">The diagram provides a general overview and best practice location for your </a>integration product, but does not show all Websense components. Larger networks require Websense components to be distributed across several dedicated machines. Also, the Web filtering components are shown above on a Windows machine. The TRITON Unified Security Center must run on Windows; the remaining components can be installed on Linux instead.</div>
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