Appendix eI

Frequently Asked Questions

Q. What is a firewall?

A. Firewall helps make your computer invisible to online attackers and blocks some malicious software such as viruses, worms, and Trojans. A firewall can also help prevent software on your computer from accessing the Internet to accept updates and modification without your permission1.Firewalls come in both software and hardware form, but hardware firewalls are intended for use in addition to a software firewall. It is important to have both a firewall and antivirus software turned on before you connect to the Internet1.

Q. What is antivirus software?

A. Antivirus software helps protect your computer against specific viruses and related malicious software, such as worms and Trojans. ...

Get Computer and Information Security Handbook, 2nd Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.