ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación descargar pdf (Pagina 286)

devices. For 22 bedrooms, it is just necessary to have two segments (one with 15 and

one with 7) to cover the story requirements.

Figure 11.16 illustrates the PLC architecture to be configured for the AsokaUSA

8950 PLC device used for managing these 3 segments with 15 PLC devices.

Internet Access with Confidentiality Between Computers

One of the disadvantages of the PLC HomePlug 1.0 and Turbo networks comes

from the fact that the medium is shared and that there may be network connections

between network PLC devices, and therefore between bedrooms, as is shown by the

case of the three bedrooms illustrated in Figure 11.17.

However, the data confidentiality can be ensured with the PlugLAN 8950

devices from AsokaUSA used for establishing blocking rules between the computers

of the PLC network.

Let us suppose that the bedroom network is in 192.168.0.1/24. These rules are

configured using the HTTP interface by means of the Security menu by selecting the

Data filtering submenu and by ticking the Edit box. The new filtering rule must of

course indicate the source and destination IP addresses of all the stations to be fil-

tered.

The rule to be implemented must block the bidirectional IP traffic of any com-

puter from network 192.168.1.0/24 to any other computer of the same network.

An additional rule is necessary to authorize any bidirectional traffic to the outside

networks.

Sample Implementation of PLC in a Hotel 267

Figure 11.15 Managing the story PLC network with more than 15 devices

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ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación Pagina 286