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Intrusion Defense Firewall 1.2 User's Guide - Trend Micro? Online ...

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example, your network has no DNS and you are using dynamic IPs. (IDF Server Plug-in always identifies<br />

Computers/Client Plug-ins by their unique fingerprint, not their IP addresses.)<br />

Remote Activation<br />

The default process of installing and activating a Client Plug-in on a Computer is as follows: the Client<br />

Plug-in is installed on a Computer and then a User uses the IDF Server Plug-in to "activate the client plugin".<br />

This activation sends a unique encrypted fingerprint from the Server Plug-in to the Client Plug-in. The<br />

Client Plug-in now knows not to accept any instructions not identified as coming from the Server Plug-in<br />

by that fingerprint. There may be circumstances, however, where it is desirable for the activation to be<br />

initiated by the Client Plug-in rather than by the Server Plug-in. (Large, distributed installations, for<br />

example.) In this case the Server Plug-in must be configured to allow Client Plug-ins to communicate with<br />

it and initiate activation. Use the Remote Activation panel to set whether Client Plug-in Initiated<br />

activations are allowed.<br />

Client Plug-in initiated activation is performed from the command-line. The following are the Client Plugin's<br />

activation-related command-line options:<br />

Usage: dsa_control [/a ] [/g ] [/c ] [/r] Notes<br />

/a <br />

Activate client plug-in with IDF Server at specified URL. URL<br />

format must be "dsm://hostOrIp:port/"<br />

/g Client Plug-in URL. Defaults to "https://127.0.0.1:4118/"<br />

/c Certificate file<br />

/r Reset client plug-in configuration<br />

"port" is the Server<br />

Plug-in's Heartbeat port.<br />

(4120 by default.)<br />

You can instruct IDF Server Plug-in to send a default Security Profile to self-activating Client Plugins<br />

which do not already have a Security Profile assigned to them. Use the Security Profile to assign<br />

(when no Security Profile is currently assigned) to select a Security Profile.<br />

Heartbeat<br />

Heartbeat Interval (in minutes): How much time passes between heartbeats.<br />

Number of Heartbeats that can be missed before an alert is raised : Several missed<br />

heartbeats in a row may indicate a problem with the Client Plug-in or the Computer. This setting<br />

determines how many missed heartbeats are allowed to go by before the Server Plug-in triggers<br />

an alert. (For example, entering three will cause the Server Plug-in to trigger an alert on the<br />

fourth missed heartbeat.)<br />

Maximum change (in minutes) of the local system time on the computer between<br />

heartbeats before an alert is raised: For Client Plug-ins that are capable of detecting changes<br />

to the system clock (Windows Client Plug-ins) these events are reported to the Server Plug-in as<br />

Client Plug-in Event 5004. If the change exceeds the clock change listed here then an alert is<br />

triggered. For Client Plug-ins that do not support this capability (non-Windows Client Plug-ins),<br />

the Server Plug-in monitors the system time reported by the Client Plug-in at each heartbeat<br />

operation and will trigger an alert if it detects a change greater than the permissible change<br />

specified in this setting.<br />

Once a Computer-Clock-Changed alert is triggered, it must be dismissed manually.<br />

Automatically Update Computers<br />

By default, any time you make a change to any element in the IDF system, all affected Computers are<br />

immediately updated. For example, if you edit a port list, all Computers already making use of that port<br />

© Copyright 2010 <strong>Trend</strong> <strong>Micro</strong> Inc. www.trendmicro.com<br />

All rights reserved. - 57 -

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