HP Pavilion dv4000 Hardware and Software Guide - Page 147

Security Firewall Software When you use the notebook for e-mail, network, or Internet access, it is possible for unauthorized persons to obtain information about you, your notebook, and your data. Firewalls monitor all incoming and outgoing traffic on your computer by including features such as logging and reporting, automatic alarms, and user interfaces for configuring the firewall. To protect your privacy, it is recommended that you use firewall software. Your notebook comes with preinstalled firewall software. Refer to the online Help in the firewall software application for additional information. ✎ Under some circumstances a firewall can block access to Internet games, interfere with printer or file sharing on a network, or block authorized e-mail attachments. To temporarily solve the problem, disable the firewall, perform the task that is interfering with the firewall, and then reenable the firewall. To permanently resolve the problem, reconfigure the firewall. Hardware and Software Guide 12-13