Virus Warning See ???Anti-Virus Protection.???
Wait for F1 if Error If this option is disabled, your computer will continue to boot even if an error is found;
otherwise, you??™ll have to press F1 before the system will start. Such errors include a
missing keyboard, a missing video adapter, and an unexpected quantity of installed
memory. Enable this option if you want to know about every problem, or disable it if
you want the PC to start without interruption (essential for servers).
Write combining Enable this option for better video performance, but disable it if you encounter video
corruption or system crashes.
Table A-1. Common BIOS settings and what they do (continued)
Setting Description
585
Appendix BTCP/IP Ports APPENDIX B
TCP/IP Ports
When your web browser or email program connects to another computer on
the Internet, it does so through a TCP/IP port. If you have a web server or
FTP server running on your PC, it opens a port through which other computers
can connect to those services. Port numbers are used to distinguish
one network service from another.
Mostly, this is done behind the scenes. However, knowing which programs
use a specific port number becomes important when you starting considering
security. A firewall uses ports to form its rules about which types of network
traffic to allow, and which to prohibit. And the Active Connections
utility (netstat.exe), used to determine which ports are currently in use,
allows you to uncover vulnerabilities in your system using ports.
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