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DISCUS™ DRG A124G
If you have a client PC that cannot run an Internet application properly from be-
hind the firewall, you can open the client up to unrestricted two-way Internet ac-
cess. Enter the IP address of a
DMZ (Demilitarized Zone)
host this screen.
Adding a client to the DMZ may expose your local network to a variety of secu-
rity risks, so only use this option as a last resort.
FIGURE 9
DMZ settings
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Firewall Section
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DISCUS™ DRG A124G
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SNMP Section
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SNMP Section
SNMP Section
Use the SNMP configuration screen to display and modify parameters for the
Simple Network Management Protocol (SNMP)
.
Figure 1 shows
SNMP
main
screen.
FIGURE 1
SNMP Main panel
SNMP >> COMMUNITY
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 Router, the NMS
must first submit a valid community string for authentication.
Figure 2 shows the
SNMP community
configuration.
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DISCUS™ DRG A124G
SNMP community settings
The meaning of fields is explained in
Table 1.
TABLE 1
List of SNMP community fields
PARAMETER
DESCRIPTION
Community
A community name authorized for management access
Access
Management access is restricted to Read Only (Read) or Read /
Write (Write)
Valid
Enables / Disables the entry
Up to five community names may be entered.
SNMP >> TRAP
Specify the IP address of the NMS to notify when a significant event is detected
by the agent. When a trap condition occurs, the SNMP agent sends an SNMP
trap message to any NMS specified as a trap received.
Figure 3 shows
SNMP Trap
configuration.
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DISCUS™ DRG A124G
FIGURE 3
TRAP configuration panel
Table 2
Table 2shows the meaning of SNMP trap menu.
TABLE 2
List of parameters on SNMP trap menu
PARAMETER
DESCRIPTION
IP Address
Traps are sent to this address when errors or specific events oc-
cur on the network
Community
A community string (password) specified for trap management.
Enter a word, something other than public or private, to prevent
unauthorized individuals from accessing information on your sys-
tem
Version
Sets the trap status to disabled, or enabled with V1 or V2c
The V2c protocol was proposed in late 1995 and includes en-
hancements to V1 that are universally accepted. These include a
get-bulk command to reduce network management traffic when
retriving a sequence of MIB variables, and a more elaborate set of
error codes for improved reporting to a Network Management Sta-
tion
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