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<title>Plan for Universal Connection</title>
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<h2 id="beforestart">Plan for Universal Connection</h2>
<p>You need to make some decisions before running the Universal Connection
wizard. During the configuration process, you are asked to choose the type
of connection you want to use for IBM&reg; customer support. That decision depends
on your network and accessibility to the Internet from your iSeries&trade; server. With
NAT-compatible IPSec, iSeries servers support a connection even when there is
an intervening NAT firewall. Support for HTTP and HTTPS allow connections
through most firewalls and through customer- or IBM-supplied proxies.</p>
<p>Consider the following points before you select a Universal Connection
configuration scenario:</p>
<ul>
<li>Your hardware, software, and network configuration:
<ul>
<li>If your server is not on a network, or is only on a private network and
has a modem, you may want to select the <span class="bold">A dial-up connection
using the AT&reg;&amp;T Global Network Services</span> option. This option provides you
with a secure dial-up connection to IBM services and support and all data is protected
using a VPN or SSL.</li>
<li>If your system or partition has access to a partition, system, or HMC
that has a modem, you can configure that system with the <span class="bold">Connect through another system or partition </span>option using a remote AT&amp;T
Connection.</li>
<li>If your server has direct access (broadband with a fixed IP address or
LAN with a globally routable IP address) to the Internet (without an intervening
firewall), or if your server has a private IP address but can access the Internet
through a firewall using NAT, you can select the <span class="bold">A direct connection to the Internet</span> option. This is the recommended option,
as it allows for the fastest, most secure access to IBM services and support.</li>
<li>If you have an Internet service provider (ISP) that your server dials
into and acts as a connecting point for other servers or partitions, you may
want to select the <span class="bold">A connection using an Internet
Service Provider</span> option. This option supports a secure connection to IBM services
and support at the same time and over the same dial-up connection that is
currently used by your iSeries server to access the Internet.</li>
<li>If your server is located on a private network, does not have a global
IP address, and has access to a router or server that allows the iSeries server to
establish a connection to the Internet through an ISP, select the <span class="bold">A multi-hop connection to the Internet </span>option.</li>
<li>In addition to one of the above configurations, if your enterprise
contains an HTTP proxy or you configure a Service and Support proxy on one
or more of your logical partitions, you can also configure so that service
applications that support HTTP and/or HTTPS proxies can use these proxies.</li></ul>
<a name="wq9"></a>
<div class="notetitle" id="wq9">Note:</div>
<div class="notebody">You can configure both a primary and a backup
configuration and a primary and a backup proxy.</div></li>
<li>Your company's network security policy</li>
<li>Setting packet rules: You need to ensure that the Universal Connection
traffic is allowed through your firewall. For details, see <a href="packetff.htm#packetff">IP Packet Filter Firewall</a>.</li>
<li>SOCKS security: You need to ensure that none of the Universal Connection
traffic gets directed through a SOCKS server. See the <a href="../rzab6/csocks.htm">Client SOCKS support</a> topic for more information.</li>
<li>Domain Name Server (DNS): When possible, the service applications
will use a DNS to look up service destination addresses. This allows for additional
fault tolerance. This being the case, we encourage you to make your DNS available
to the appropriate iSeries servers using the CHGTCPDMN CL command.</li></ul>
<a name="wq10"></a>
<div class="notetitle" id="wq10">Note:</div>
<div class="notebody">Some configuration is required when using an
HMC modem to connect to IBM through an i5/OS&trade; partition, or when having an HMC connecting
to IBM through an i5/OS partition's VPN or modem connection. For further
information, see <a href="../icbase/ipha5/settingup.htm" target="_blank">Setting up your service
environment</a> in the IBM Systems Hardware Information Center.</div>
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