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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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