ZyXEL Communications 320W What are the disadvantages of Wireless LANs?, What is an Access Point?

Page 63

P320W Support Notes

c. Installation Flexibility:

Wireless technology allows the network to go where wire cannot go.

d. Reduced Cost-of-Ownership:

While the initial investment required for wireless LAN hardware can be higher than the cost of wired LAN hardware, overall installation expenses and life-cycle costs can be significantly lower. Long-term cost benefits are greatest in dynamic environments requiring frequent moves and changes.

e. Scalability:

Wireless LAN systems can be configured in a variety of topologies to meet the needs of specific applications and installations. Configurations are easily changed and range from peer-to-peer networks suitable for a small number of users to full infrastructure networks of thousands of users that enable roaming over a broad area.

What are the disadvantages of Wireless LANs?

The speed of Wireless LAN is still relative slower than wired LAN. The most popular wired LAN is operated in 100Mbps, which is almost 10 times of that of Wireless LAN (10Mbps). A faster wired LAN standard (1000Mbps), which is 100 times faster, becomes popular as well. The setup cost of Wireless LAN is relative high because the equipment cost including access point and PCMCIA Wireless LAN card is higher than hubs and CAT 5 cables.

Where can you find wireless 802.11 networks?

Airports, hotels, and even coffee shops like Starbucks are deploying 802.11 networks so people can wirelessly browse the Internet with their laptops. As these types of networks increase, this will create additional security risk for the remote user if not properly protected.

What is an Access Point?

The AP (access point also known as a base station) is the wireless server that with an antenna and a wired Ethernet connection that broadcasts information using radio signals. AP typically acts as a bridge for the clients. It can pass information to wireless LAN cards that have been installed in computers or laptops allowing those computers to connect to the campus network and the Internet without wires.

63

All contents copyright (c) 2005 ZyXEL Communications Corporation.

Image 63
Contents Prestige 320W P320W Support Notes Ireless FAQ Trouble Shooting Ethernet connection Internet ConnectionTCP/IP Installation TCP/IP ConfigurationSetting up the Prestige router P320W Support Notes P320W Support Notes Configure an Internal Server Behind SUA Smtp Service Port NumberUsing the Dynamic DNS Ddns Snmp Overview Network Management Using SnmpP320W Support Notes SNMPv1 Operations Trap GetGetNext SetZyXEL Snmp Implementation Get Community Configure the Prestige for SnmpUsing Prestige traffic redirect Set CommunityTraffic Redirect on LAN port What is UPnP Using Universal Plug n Play UPnPUsing UPnP in ZyXEL devices Go to Management-UPnP, check Enable UPnP service P320W Support Notes Finally, your video conversation is achieved What is Infrastructure mode? Infrastructure ModeP320W Support Notes Configuration Wireless Station to Infrastructure mode P320W Support Notes Double click on the AP you want to associated with MAC Filter Overview Wireless MAC Address FilteringZyXEL MAC Filter Implementation Configure the Wlan MAC FilterIntroduction WEP ConfigurationP320W Support Notes Setting up the Access Point Setting up the Station Key settingsP320W Support Notes P320W Support Notes Ieee 802.1x Introduction IeeeAuthenticator Authentication ServerSupplicant Authentication Port State and Authentication Control Re-Authentication Eapol Exchange between 802.1x Authenticator and Supplicant P320W Support Notes Using WEB Configuration Using External Radius Authentication Server P320W Support Notes Site Survey Survey on Site PreparationP320W Support Notes P320W Support Notes What is the P320W 802.11g Wireless Firewall Router? FAQDoes the Prestige support PPPoE? What is PPPoE?Will the P320W work with my Internet connection? What do I need to use the Prestige?Which Internet Applications can I use with the Prestige? How do I know I am using PPPoE?Why does my provider use PPPoE? How can I configure the Prestige?How does e-mail work through the Prestige? How fast can the data go? What Dhcp capability does the Prestige support?Your ISP checks the MAC address Your ISP checks the Host Name What is Ddns What is BOOTP/DHCPWhen do I need Ddns service? What is a network firewall? What makes P320W secure?What are the basic types of firewalls? What kind of firewall is the P320W? What is Denials of Service DoS attack?What is Land attack? What is Ping of Death attack?What is Teardrop attack? What is SYN Flood attack?What is IP Spoofing attack? What is a Wireless LAN?What are the advantages of Wireless LANs? What are the disadvantages of Wireless LANs? Where can you find wireless 802.11 networks?What is an Access Point? What is 802.11g? What is Ieee 802.11?What is 802.11b? What is 802.11a?Is it possible to use products from a variety of vendors? What is Wi-Fi?Does the 802.11 interfere with Bluetooth devices? Can radio signals pass through walls?Whats the difference between a Wlan and a WWAN? What is Ad Hoc mode?What is Infrastructure mode? How many Access Points are required in a given area?What is Server Set ID SSID? What is Direct-Sequence Spread Spectrum Technology DSSS?What is Frequency-hopping Spread Spectrum Technology FHSS? Why the 2.4 Ghz Frequency range?What is a WEP key? What is an ESSID?What is WEP? What is the difference between 40-bit and 64-bit WEP?Open System What is Wireless Sniffer?Can the Ssid be encrypted? What are Insertion Attacks?What is 802.1x? What is AAA?What is RADIUS? Why cannot access the Internet? Why cannot access the Prestige from my computer?Your ISP checks the MAC address Unable to run applications ZyXEL SUA Supporting TableApplication Outgoing Connection Incoming Connection NAT-T P320W Support Notes