Select Security???Set up a Personal Firewall. The Firewall service appears in the window.
4. Select particular services you would like to have available from your desktop system and
click OK.
The default settings shown might be appropriate for many desktop systems because they
don??™t allow any incoming service requests. With SSH, FTP, and Echo request on, someone
could log in to your system over the network (with appropriate login and password), get
files you offer through your own FTP service, and ping your computer to see if it is up and
running on the network. Of course, opening your firewall to allow SSH and FTP services
assumes you have those two services turned on and configured as you like.
Other services you can enable from check boxes on this window include Web server,
Domain Name System Server, and CUPS server (for printing). If your system is configured
as a mail server, you can select Mail Server and, optionally, POP and IMAP servers
(to allow mail users to get their e-mail messages).
If you want to add other ports, click the Advanced button. The Mandriva tool uses a
different syntax for adding ports than does Fedora. You need to separate port numbers
and protocols with a slash (for example, 123/udp 123/tcp to open the network time
protocol for those two protocols).
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