The domain is the bigger network, a work group is a smaller group within the domain, information can be shared between only these computers.
SSID – Service Set Identifier
The default wireless network name so that wireless devices can detect other devices in a wireless network, it must be manually entered when the SSID broadcast has been disabled on the wireless router or access point.
MAC address filtering
A security technique in which only identified MAC addresses can connect to a wireless network, used on wireless LAN’s
WEP – Wired Equivalent Privacy
First generation security for wireless, crap, it is easy to break it’s encryption making it pretty much useless.
WPA – Wi-Fi Protected Access
2nd generation of WEP, has much stronger encryption
A security layer for wireless systems, once it was made an official standard WPA2 was released
WPA2 – Wi-Fi protected access 2
The improved version of WPA which uses the entire 802.11i standard and provides goverment grade security. It can be enabled in two versions:
Personal – Password authentication
Enterprise – Server authentication
LEAP – Lightweight extensible Authentiation Protocol
CISCO’s wireless security, addresses weaknesses in WEP and WPA
WTLS – Wireless Transport Layer Security
Security for mobile devices which uses a smaller amount of bandwidth. Uses WAP (Wireless Applications Protocol)
Hub – receives data, sends to all ports
Switch – Sends to intended port, more sophisticated than a bridge
Routers – Connects entire networks to each other e.g. internet
WAP – Wireless Access Points, Uses radio waves to connect wireless devices to the network