Setup guide

UNCLASSIFIED

Chapter 4-

Configuring System Settings

Figure 13: Sharing Services Configuration Panel

4. Unlock the window for editing if necessary.

5. Make sure all checkboxes are unchecked. These services are all disabled by

default, and unless there is a specific operational need for a service, it should

remain disabled. If a service is enabled because of operational requirement,

the risks incurred by opening that service should be considered. Also, note

that when setting up the built-in firewall in the next section, it is expected that

all services are off in order to correctly enable the firewall, and any services

enabled here will also have to be allowed through the firewall.

6. Replace the entry in the Computer Name box at the top of the screen with

a new name for the system. The name should be unrelated to any account

names on the system.

Mac OS X includes basic firewall filtering. This firewall prevents incoming network

connections to certain ports; it does not restrict outgoing transmissions by default.

The firewall can be configured in two ways: by using the System Preferences

program, or by using the ipfw command in a terminal window. A limited subset

of possible configurations can be managed through the System Preferences