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

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