Canon 802.11g 54M WLAN User Manual

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802.11g 4-Port Wireless LAN Broadband Router 
 
 
 
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4. Glossary   
Ad-Hoc Mode   
An Ad-hoc integrated wireless LAN is a group of computers, each has a Wireless LAN 
adapter, Connected as an independent wireless LAN. Ad hoc wireless LAN is applicable at 
a departmental scale for a branch or SOHO operation.   
BSS ID   
A specific Ad hoc LAN is called a Basic Service Set (BSS). Computers in a BSS must be 
configured with the same BSS ID. 
DHCP (Dynamic Host Configuration Protocol) 
DHCP is a protocol for dynamically assigning IP addresses to networked computers. With 
DHCP, a computer can automatically be given a unique IP address each time it connects to 
a network—making IP address management an easier task for network administrators. 
When a computer logs on to the network, the DHCP server selects an IP address from a 
master list and assigns it to the system. 
DMZ Host (De-Militarized Zone Host) 
DMZ is the portion of a private network that is visible through the network’s firewalls. DMZ 
Host allows a local computer exposed to the Internet. Therefore, an incoming packet will be 
checked by Firewall and NAT algorithms in the router then pass to the DMZ host when 
packet is not sent by hacker and is not limited by Virtual Server list. Besides, there are 
some IP protocols that do not have port number information. There is no way to use Virtual 
Server setting to forward incoming packet. Thus, DMZ host is the way to forward such kind 
of packets. If you try to enable DMZ host and setup Virtual Server, the precedence is Virtual 
Server and then DMZ. For example, the incoming packet will be checked with Firewall rules, 
Virtual Server rules and   
then DMZ host. 
 
DSSS (Direct-Sequencing Spread-Spectrum)   
DSSS operate over the radio airwaves in the unlicensed ISM band (industrial, scientific, 
medical). DSSS uses a radio transmitter to spread data packets over a fixed range of 
frequency band. 
Encryption  
It’s a security method that applies a specific algorithm to data in order to alter the data 
appearance and prevent other devices from reading the information.   
Firewall 
A firewall is a device that sits between your computer and the Internet that prevents 
unauthorized access to or from your network. A firewall can be a computer using firewall