| A | B |
|---|
| Firewall | A security barrier that controls the flow of information between the Internet and a private network. |
| Public Network | Another name for the Internet. No central control or ownership. |
| Gateway | A router configured to protect the network by examining each packet. |
| Virtual Private Networks (VPN) | Encrypted connection between two computers. |
| Wired Equivalent Privacy (WEP) | Original security mechanism for wireless networks. Obsolete |
| Wifi Protected Access (WPA) | Better security than WEP, does not require wireless networking hardware |
| Wifi Protected Access (WPA2) | The most secure encryption. Requires modern wireless equipment. |
| Authentication | The process of verifying the identity of a user who logs o to a system or network. |
| Access control | The process of controlling who may access particular network resources or services. |
