sensitive time

period

Maximum 30 Maximum number of half-open fragmentation

half-open packets from the same host.

fragmentation

packet

number from

same host

Half-open 1 secs Length of time before a half-open fragmentation

fragmentation session is detected as half-open.

detect sensitive

time period

Flooding cracker 300 secs Length of time from detecting a flood attack to block time blocking

the attack.

DMZ

If you have a client PC that cannot run an Internet application properly from behind the firewall,

you can open the client up to unrestricted two-way Internet access. Enter the IP address of a

DMZ (Demilitarized Zone) host on this screen. Adding a client to the DMZ may expose your local

network to a variety of security risks, so only use this option as a last resort.

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SNMP

Community

Use the SNMP configuration screen to display and modify parameters for the Simple Network

Management Protocol (SNMP). A computer attached to the network, called a Network

Management Station (NMS), can be used to access this information. Access rights to the agent

are controlled by community strings. To communicate with the Belgacom b-box, the NMS must

first submit a valid community string for authentication.

Parameter

Description

Community

A community name authorized for

management access.

Access

Management access is restricted to Read

or Write.

Valid

Enables or disables the entry.

Note:

Up to 5 community names may be entered.

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Trap

Parameter Description

IP Address Community

Version Traps are sent to this address when errors or specific events occur on the network.

A community string (password) specified for trap management. Enter a word, something other

than public or private, to prevent unauthorized individuals from reading information on your

system.

Sets the trap status to disabled, or enabled with V1 or V2c.

The v2c protocol was proposed in late 1995 and includes enhancements to v1 that are

universally accepted. These include a get-bulk command to reduce network management traffic

when retrieving a sequence of MIB variables, and a more elaborate set of error codes for

improved reporting to a Network Management Station.

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ADSL

ADSL Parameters

We recommend leaving the Operation Mode at the default Automatic setting, to automatically

negotiate with the remote DSLAM.

Parameter Description

Operation Mode • Automatic

±

T1.413 Issue 2

±

G.992.1 (G.DMT)

±

G.992.2 (G.Lite)

±

G.992.3 (ADSL2)

±

G.992.5 (ADSL2+)

Status

The Status page displays ADSL status information.

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Parameter Description

Status Line Status

Data Rate Upstream Downstream

Operation Data/Defect Indication

Noise Margin Upstream: Downstream:

Output Power

Attenuation Upstream: Downstream:

Fast Path FEC Correction

Interleaved Path FEC Correction

Fast Path CRC Error

Interleaved Path CRC Error

Loss of Signal Defect

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