Think of a firewall as a wall between your computer network and the Internet. Quick Tips Internal firewalls . Firewalls do not only protect you from the Internet. You may also want to use the firewall internally to protect a particular department's files from the rest of the company. Keep the bug spray .
Viruses can sneak past firewalls via floppy disks or e-mail attachments.
A firewall doesn't eliminate the need for anti-virus software. Nothing's infallible . A firewall should be part of a larger security plan. Keep abreast of news about security holes in your everyday applications, download the software patches, and encrypt very sensitive information. You will want to employ a technical person to set up and maintain the firewall.