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Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

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Communication<br />

with systems in<br />

an external<br />

network<br />

Figure 198: <strong>Sidewinder</strong><br />

<strong>G2</strong> serving as an SNMP<br />

agent for internal or<br />

external management<br />

station<br />

Chapter 15: Configuring the SNMP Agent<br />

Communication with systems in an external network<br />

You can route (or forward) SNMP messages between a management station<br />

behind the <strong>Sidewinder</strong> <strong>G2</strong> and any SNMP managed node on the other side <strong>of</strong><br />

the <strong>Sidewinder</strong> <strong>G2</strong>. You can also allow an external management station to<br />

access the <strong>Sidewinder</strong> <strong>G2</strong> SNMP agent. Both <strong>of</strong> these scenarios require the<br />

use <strong>of</strong> a UDP proxy.<br />

Important: A UDP proxy is not needed to allow the <strong>Sidewinder</strong> <strong>G2</strong> SNMP agent to<br />

communicate with a management station in an internal network (behind the<br />

<strong>Sidewinder</strong> <strong>G2</strong>).<br />

Figure 198 summarizes which SNMP configurations require you to configure a<br />

UDP proxy.<br />

internal<br />

SNMP<br />

mgmt.<br />

station<br />

(OpenView)<br />

no<br />

proxy<br />

needed<br />

internal<br />

network<br />

SNMP<br />

agent<br />

UDP<br />

proxy<br />

external<br />

network<br />

UDP<br />

proxy<br />

SNMP<br />

agent<br />

Internet<br />

The <strong>Sidewinder</strong> <strong>G2</strong> UDP proxy sends SNMP requests and messages via UDP<br />

port 161. The <strong>Sidewinder</strong> <strong>G2</strong> UDP proxy sends SNMP traps to an external<br />

management station via UDP port 162.<br />

The SNMP agent cannot run in the Firewall burb. Although only one SNMP<br />

agent is allowed to operate on the <strong>Sidewinder</strong> <strong>G2</strong>, access through other burbs<br />

is supported using the UDP proxy.<br />

Note: Refer to “Setting up a new proxy” on page 270 for information on configuring<br />

a UDP proxy.<br />

R<br />

external<br />

SNMP<br />

mgmt.<br />

station<br />

471

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