Draytek VIGOR 3300 Guia de Instalação descarregar pdf (Página 107)

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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

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Draytek VIGOR 3300 Guia de Instalação Página 107