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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<div class="nested0" id="rzamuconremote"><a name="rzamuconremote"><!-- --></a><h1 class="topictitle1">Scenario: Enable remote connections</h1>
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<div><p>Your company has a branch sales office that has several remote
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sales personnel who need to connect to your iSeries™ server. You also connect to your
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corporate office located in another state. Because the information that is
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transmitted between these areas of your company is sensitive, you are concerned
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about protecting it as it is sent across the Internet. Use this scenario to
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configure connections to remote clients and servers.</p>
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<div class="section"><h4 class="sectiontitle">Situation</h4><p>You are the network administrator for
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a branch sales office that manages several mobile sales employees. You also
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work with the corporate office located in another state. Both the remote sales
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personnel and the corporate office need access to your internal network; however,
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you are concerned about protecting information as it is transmitted over the
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Internet.</p>
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<p>The corporate office often needs access to
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sensitive information like customer accounts and billing statements. Your
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mobile sales employees transmit information to your branch sales office by
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dialing an Internet service provider (ISP) through the Point-to-Point Protocol
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(PPP). Because they also transmit sensitive information, you need to ensure
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data integrity and privacy in these communications. You do not want sensitive
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credit card numbers or customer contact information exposed to the Internet.
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After researching your options for both groups of users, you have decided
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to use a virtual private network (VPN) to protect your connections to the
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corporate office and to use Layer Two Tunnel Protocol (L2TP) protected with
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a VPN for your remote employees.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Objectives </h4><p>The administrators for
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MyCo, Inc have the following objectives:</p>
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<ul><li>To provide access to remote sales people and the corporate office</li>
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<li>To use existing iSeries servers to support these goals</li>
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<li>To allow remote sales people and the corporate office to access the branch
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office network</li>
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</ul>
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</div>
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<div class="section"><h4 class="sectiontitle">Details</h4><p>The following network topology shows the
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connections between a branch sales office and a corporate headquarters and
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remote sales personnel. Connections to the branch sales office are protected
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through a VPN. The following descriptions of each part of this network provide
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details on their configuration.</p>
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<br /><img src="rzamu503.gif" alt="Enable remote connections" /><br /></div>
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<div class="section"><h4 class="sectiontitle">Branch sale office</h4><ul><li>iSeries A runs on OS/400<sup>®</sup> Version 5 Release 2 (V5R2) and
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contains all pertinent business applications.</li>
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<li>iSeries A
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acts as the gateway for the VPN connection with the branch sales office.</li>
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<li>iSeries A has IP address 192.168.1.2,
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which is globally routable. <div class="important"><span class="importanttitle">Important:</span> IP addresses
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used in this scenario are meant for example purposes only. They do not reflect
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an IP address scheme and should not be used in any actual configuration. Use
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your own IP addresses when completing these tasks.</div>
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</li>
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<li>Subnet mask is 255.255.255.0. </li>
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<li>iSeries A
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connects to its subnet with the IP address 10.1.1.1. </li>
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<li>Within the internal network of the branch sales office, all PCs have been
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configured with a default route that points to iSeries A.</li>
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<li>The fully qualified host name of iSeries A is iseriesa.myco.min.com.</li>
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<li>Both iSeries A
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and B can initiate connections.</li>
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<li>Remote employees use a pool of IP addresses that range from of 10.1.1.100
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to 10.1.1.150.</li>
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</ul>
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</div>
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<div class="section"><h4 class="sectiontitle">Corporate office</h4><ul><li>iSeries B
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runs on OS/400 Version
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5 Release 2 (V5R2) and contains all pertinent business applications.</li>
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<li>iSeries B
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acts as the gateway for the VPN connection for corporate office.</li>
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<li>iSeries B
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has the IP address of 172.16.1.3 that is globally routable. <div class="important"><span class="importanttitle">Important:</span> IP
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addresses used in this scenario are meant for example purposes only. They
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do not reflect an IP addressing scheme and should not be used in any actual
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configuration. You should use your own IP addresses when completing these
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tasks.</div>
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</li>
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<li>Subnet mask is 255.255.255.0. </li>
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<li>iSeries B
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connects to its subnet with the IP address 10.2.1.1. </li>
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<li>Within the internal network of the corporate office, all PCs have been
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configured with a default route that points to iSeries B.</li>
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<li>The fully qualified host name of iSeries B is iseriesb.myco.wis.com.</li>
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</ul>
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</div>
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<div class="section"><h4 class="sectiontitle">Remote sales personnel</h4><ul><li>Laptop with a Microsoft<sup>®</sup> Windows<sup>®</sup> XP operating system</li>
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<li>Remote employees use a pool of IP addresses that range from 10.1.1.100
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to 10.1.1.150.</li>
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</ul>
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</div>
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<div class="section"><h4 class="sectiontitle">Prerequisites and assumptions</h4><p>This scenario provides
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an example VPN configuration between a branch sales office and a corporate
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office. It also provides instructions on how to configure remote access for
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travelling sales people connecting to the branch office. This scenario assumes
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that several prerequisite steps have been completed and tested, and are operational
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before beginning these configuration steps. These prerequisites are assumed
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to have been completed for this scenario:</p>
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<ol><li>Ensure that the following licensed programs have been installed: <ul><li>OS/400 Version
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5 Release 2 (5722-SS1)</li>
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<li>Digital Certificate Manager (5722-SS1 Option 34) <div class="note"><span class="notetitle">Note:</span> This scenario assumes
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that DCM has been installed on both systems, but it has not been configured
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on either system.</div>
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</li>
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<li>TCP/IP Connectivity Utilities for i5/OS™ (5722-TC1) </li>
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<li>IBM<sup>®</sup> HTTP
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Server for iSeries (5722-DG1)</li>
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<li>IBM eServer™ iSeries Access
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for Windows (5722-XE1)
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and iSeries Navigator</li>
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<li>IBM Developer
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Kit for Java™ (5722-JV1)</li>
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<li>Ensure that you have the latest PTFs have been installed on your system.</li>
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</ul>
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</li>
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<li>Ensure that the following server setup has been completed: <ul><li>TCP/IP must be configured, including IP interfaces, routes, local host
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name, and local domain name.</li>
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<li>Basic system security has been configured and tested.</li>
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<li>The Network component of iSeries Navigator has been installed.</li>
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<li>The retain server security data (QRETSVRSEC *SEC) system value has been
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set to 1.</li>
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<li>The shared memory (QSHRMEMCTL) system value has been set to 1.</li>
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<li>Normal TCP/IP communications has been established between required endpoints.</li>
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</ul>
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</li>
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<li>Ensure that the following requirements are on the PC that is used for
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remote employees: <ul><li>Windows XP
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client with a Windows 32-bit operating system is properly connected
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to your iSeries server
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and configured for TCP/IP.</li>
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<li>A 233 Mhz processing unit.</li>
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<li>Windows XP
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clients must have 64 MB RAM.</li>
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<li>iSeries Access
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for Windows and iSeries Navigator
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have been installed on the client PC.</li>
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<li>Software must support IP Security (IPSec) protocol.</li>
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<li>Software must support Layer 2 Tunneling Protocol (L2TP).</li>
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<li>Connection to an ISP has been established.</li>
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</ul>
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</li>
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</ol>
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<p>In addition to these prerequisites, it is assumed that both networks
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have set up and activated filter rules on their networks, configured routing,
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and established an IP addressing scheme. If you have not completed these tasks,
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see the following topics: IP filtering and network address translation (NAT)
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and TCP/IP routing and workload balancing. </p>
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<div class="tip"><span class="tiptitle">Tip:</span> This
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scenario shows the iSeries security gateways attached directly to the
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Internet. The absence of a firewall is intended to simplify the scenario.
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It does not imply that the use of a firewall is not necessary. In fact, you
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should consider the security risks involved anytime you connect to the Internet.
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Review <a href="http://www.redbooks.ibm.com/abstracts/sg245954.html" target="_blank">AS/400<sup>®</sup> Internet Security Scenarios: A Practical Approach</a><img src="rbpdf.gif" alt="Link to PDF" />, for a
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detailed description of various methods for reducing security risks.</div>
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</div>
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</div>
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<div>
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<ol>
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<li class="olchildlink"><a href="rzamudcmsteps.htm">Set up Certificate Authority with Digital Certificate Manager</a><br />
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</li>
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<li class="olchildlink"><a href="rzamuconfigurevpn.htm">Configure VPN connection between the branch sales office and the corporate office</a><br />
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</li>
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<li class="olchildlink"><a href="rzamumobilesteps.htm">Configure VPN connection to remote users</a><br />
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</li>
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</ol>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzamudynamic2.htm">Network scenarios</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="../rzajb/rzajbrzajb0ippacketsecuritysd.htm">IP filtering and network address translation (NAT)</a></div>
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<div><a href="../rzajw/rzajwkickoff.htm">TCP/IP routing and workload balancing</a></div>
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<div><a href="http://www.redbooks.ibm.com/pubs/pdfs/redbooks/sg245954.pdf" target="_blank">AS/400 Internet Security Scenarios: A Practical Approach, SG24-5954-00</a></div>
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<div><a href="../rzahu/rzahudcmscenariosoverview.htm">DCM scenarios</a></div>
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<div><a href="../rzaja/rzajascenarios.htm">VPN scenarios</a></div>
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<div><a href="../rzaiy/rzaiyscenarios.htm">PPP scenarios</a></div>
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</div>
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</div></div>
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