System information

Chapter 9 Managing Server Information 137
To change firewall settings:
1 In the Firewall pane of Server Preferences, click the On/Off switch to turn the firewall
on or off.
Turn the firewall on if you want to control incoming connections for each listed service
separately.
Turn off the firewall to allow all services to accept incoming connections from outside
your server’s local network.
2 In the list of services, select a service’s checkbox if you want the service to accept
incoming connections only from the server’s local network.
Deselect a service’s checkbox if you want the service to accept incoming connections
from all networks including the Internet.
Settings in the list of services take effect only if the firewall is on.
About the Firewall
Mac OS X Server includes firewall software you can use to block unwanted network
communication with your server. This firewall is called an application firewall because it
accepts or denies an incoming connection based on the particular application, service,
or other software module that is trying to accept the connection. This firewall doesn’t
control outgoing network traffic. Settings in the Firewall pane of Server Preferences
control the same firewall as settings in the Firewall pane of the Security pane in System
Preferences.