Liz's Security Devices
Hardware Security Device
A hardware firewall. A small box that sits between a modem and a computer or network
- Designed to block unauthorized access
- Allow outgoing communication
- Configured to permit, deny, encrypt or decrypt
- Examines packets of data
Configured to permit or deny based on a set of rules
- White list – Deny all
- Black list – Allow all
Filter based on:
- IP addresses
- Domain names
- Protocols
- Ports
Can also block specified content and keep logs of sites visited or IP addresses trying to access the network
They are another layer of protection:
- Filter
- Block
- Identify suspicious activity
- Cannot replace antivirus software
- Cannot clean a virus from a computer
- Cannot prevent users from copying infected files
page revision: 8, last edited: 06 May 2009 16:59
