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Christopher Negus

"Linux Bible, 2008 Edition: Boot up to Ubuntu, Fedora, KNOPPIX, Debian, openSUSE, and 11 Other Distributions"

Open a range of ports for a protocol by separating
them with a colon (for example, 137:139/tcp 137:139/udp to allow Windows file
and printer sharing from your computer). Separate multiple entries with spaces instead of
commas.
5. Click OK to accept your setting and continue. You are asked if you want to use an
Interactive Firewall.
6. With Use Interactive Firewall selected, you will be warned when someone tries to access
any of the services you have selected on this page. For example, you can be warned when
someone uses a port scanner, presumably in an attempt to find vulnerable ports on your
system. You can also be alerted when someone tries to access services you are sharing,
such as SSH, FTP, CUPS, or Echo services. Click OK to continue.
7. Select the Ethernet interfaces on which the firewall will be enabled and click OK to
continue.
Mandriva uses a facility called Shorewall to set up and manage its iptables rules. So, instead of looking
in /etc/sysconfig/iptables for the changes you just made, look in the /etc/shorewall
directory for files such as rules, policy, and interfaces. You can have those rules take effect
immediately by restarting the Shorewall service (as root user, from a Terminal window):
service shorewall restart
When Shorewall restarts, look for any messages displayed.


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