Installation guide

104
TCP/IP network protocols and most other protocols broadcast frames periodically to
advertise or discover network resources. This can have a significant impact on the network
performance with a large number of end users. VLANs can prevent traffic from flooding
the entire network. Nowadays, many virus attacks influence the network traffic. Using
VLANs to avoid extending the virus.
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The Vigor 3300 allow users to setup the LAN to LAN communication. For instance, a
company might create multiple subnet for employees and wish they can communicate
with each other. The administrator should allow the LAN to LAN communication. On the
other hand, a company does not allow communicate with different department. The
administrator should block the LAN to LAN communication.
Configure firewall to allow or deny LAN to LAN communication. Add following setting
to block different VLAN communication.
Figure 5-3. IP Filter table
Figure 5-4. IP Filter setting