Step 5: Save firewall service changes
Once you have configured your filters and determined which services to allow, save your changes so the new settings take effect.
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.
Managing Firewall Service
This section gives
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.
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.
To start or stop firewall service:
1In Server Admin, choose Firewall from the Computers & Services list.
2Click Start Firewall.
When the service is started, the Stop Service button is available.
Opening the Firewall for Standard Services
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.
You can easily allow standard services through the firewall without advanced and extensive configuration. Standard services include (but are not limited to):
•Web service
•Apple File service
•Windows File service
•FTP service
•Printer Sharing
Chapter 3 IP Firewall Service | 49 |
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