Large Internet Local Area Network
ABSTRACT
As we all know, the Internet, with its relaxed and fortable environment and high-speed
Internet access and convenient services to attract more and more users to patronize. This
cafe business model has already been accepted by the masses, Internet cafes in major cities
has been rapid development, from the initial few, and now dozens, or even hundreds of
puters scale. Large and small cafes all over the country, from big cities to small town. But
with the increase in the number of Internet cafes, the petition has bee increasingly fierce
between the industry, in order to gain a foothold in the fierce petition, cafes cost control,
operational performance, management and maintenance have bee an extremely important
factor. Therefore, the design and implementation of a higher cost, easy management of
Internet cafes network solutions is particularly important. Internet cafes needs analysis,
wiring systems, equipment selection, safety should be taken into account.
The main use of technology: DHCP, NAT overloading, VLAN division, VPN tunnels
firewall, but the experiment in the Packet Trace Emulator do, having regard to the LAN
security while on the router R1 with exec-timeout 10 30 mand. Finally able to municate
between different VLAN; DHCP can automatically assign addresses; within the network
can access information outside the network, but the network can not be accessed outside
the network information.
Keyword DHCP / NAT overloading Technical / VLAN division / VPN tunnels Firewall /
Cabling
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