Apple Mac OS X Server (Administrator’s Guide) Bedienungsanleitung Seite 531

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Firewall Service 531
Step 2: Add filters to the IP filter list
Read “Before You Set Up Firewall Service” on page 527 to learn how IP filters work and how
to create them.
To add IP filters:
1 In Server Settings, click the Network tab.
2 Click Firewall and choose Show Firewall List.
3 Click New and create a filter.
For more information about creating a new filter, see “Creating an IP Filter” on page 532.
Step 3: Start Firewall service
m In Server Settings, click Firewall and choose Start Firewall.
Managing Firewall Service
Check this section to find step-by-step instructions for setting up and configuring Firewall
service.
Starting and Stopping Firewall Service
By default, Firewall service blocks all incoming TCP connections and allows all UDP
connections. Before you turn on Firewall service, make sure you’ve set up filters allowing
access from IP addresses you choose – otherwise, no one will have access to your server.
To start or stop Firewall service:
1 In Server Settings, click the Network tab.
2 Click Firewall and choose Start Firewall or Stop Firewall.
Setting Firewall Service to Start Automatically
If you plan to use Firewall service regularly, you should set the service to start automatically
on startup. This ensures that your firewall is in place after a system restart or power outage.
Important If you add or change a filter after starting Firewall service, the new filter will
affect connections already established with the server. For example, if you deny all access to
your FTP server after starting Firewall service, computers already connected to your FTP
server will be disconnected.
Important If you add or change a filter after turning on Firewall service, the new filter will
affect connections already established with the server. For example, if you deny all access to
your file server, computers already connected to your file server will be disconnected.
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