Billion BiPAC 645 User Manual download pdf (Page 35)

Chapter 7

Troubleshooting

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What is NAT?

Answer.

NAT is Network Address Translation. It is proposed and described in RFC-1631 and is originally for

solving the IP address depletion problem. Basically, "each NAT box has a table consisting of pairs of

locally private IP addresses and globally unique public IP addresses," by which the box can "translate"

the private IP addresses to public IP address and vice versa. BIPAC-645 supports the feature of NAT.

With proper configuration, multiple users can access the Internet using a single account via the NAT

device.

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How many rules can be used in IP Filtering function?

Answer.

There are totally 8 filtering rules can be applied in the LAN and WAN ports.

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How do I change the CLI mode form Advanced Prompt Mode into Express Prompt Mode? And vice

versa?

Answer.

Press Ctrl +E key under CLI mode, it will show Advanced Prompt Mode, then press Ctrl +E key again,

it will back to Express Prompt Mode.

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Why should I need to assign static private IP Address to certain workstations or PCs?

Answer.

With built-in DHCP feature, each workstation or PC will be assigned by BIPAC-645 a different private

IP address whenever power is on. For specific-purpose workstations, such as Mail server, FTP server,

or Mail Server, we need to set up the static private IP address to prevent from losing connection.

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How do I set up the Idle Time?

Answer.

The default setting for Idle Time is 120 seconds; meaning that BIPAC-645 will shut down ISDN

connection automatically once it have no traffic on the connection over 120 seconds. To keep ISDN on

without interruption, reset the Idle Time to 0.

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Is there any effect if I add another DHCP server into the local network in which connected with an

existing DHCP server?

Answer.

When it hooks up with power and network, it will detect whether there is any DHCP Server existed

automatically. If it does, BIPAC-645 will shut down DHCP feature automatically, and will close this

detective function as well.

Meanwhile, it will also detect the DHCP once Private IP changed.

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Billion BiPAC 645 User Manual Page 35