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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77

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.

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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SNMP Section

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