As a general rule, if you are running a server using SUSE (or any other operating system for that matter), you should turn off any services that are not needed for the running of that specific server. For example, if you were running a web server for your organization, you would not run X Windows because it is not needed to run Apache. In this situation, you would probably run in a default runlevel of 3 (multiuser, with network, no X Windows) and turn off (or better, remove) any non-essential services using the chkconfig program. Listing 4-1 shows the output of chkconfig - -list after we have turned off any services that are not needed to run Apache.
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