Personal firewalls
We recommend that you use a personal firewall on your PC, especially if your computer
is located in the Halls and Colleges.
The Windows XP SP2 builtin firewall protects your computer from the multiple probes
from other infected computers on the network, but it does not filter outgoing traffic.
ZoneAlarm is a free Windows firewall from http://www.zonelabs.com
It is harder to configure, but allows you to specify what programs are allowed to access
the Internet and which ones are not. If your computer gets infected with a virus and
the malicious code tries to contact an IRC server for instance, ZoneAlarm will alert
you to this.
Unfortunately, the newest version of ZoneAlarm, v6.0.667.000 has the problem that
it logs every packet that it receives and in the process generates a huge number of
nameserver lookups. Please use an older version, v5.5.094 for instance.
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