System information

164 Chapter 10 Managing Server Information
You can set up a rewall to protect your local network (IP subnet), or you can manage
an AirPort Extreme Base Station (802.11n) or a Time Capsule to protect your local
network. Either way, you can individually specify which services will accept incoming
connections from computers outside your server’s local network (IP subnet). If you use
rewall security (not AirPort management), you can allow incoming connections to all
services from outside your server’s local network.
If the Security pane says you’re using the application rewall, you can manage it in
System Preferences, or you can turn it o there and manage the server’s rewall in
Server Preferences. For more information, see “About Firewall Security,” next.
If your server gets its Internet connection through a network router other than an
AirPort Extreme Base Station or Time Capsule, you can use the router’s conguration
software to protect your server and your local network. If you do that, you can turn o
rewall security in the Security pane. For information about conguring your router,
see “Protecting Your Network with a Router” on page 36.
To control which services are exposed to the Internet:
1 If you have an AirPort Extreme Base Station or a Time Capsule, and you see a “Switch to
AirPort management” button in the Security pane, click the button to use the AirPort
Extreme Base Station or Time Capsule for security control.
If you’re asked to authenticate, enter the base station or Time Capsule password (not
the wireless network password).