this guide describes the following products:

    this guide describes the following products:

    1 the two variants of the officeconnect?internet firewall:

    1 officeconnect internet firewall 25 3c16770

    2 officeconnect internet firewall dmz 3c16771

    2 officeconnect web site filter 3c16772 ?software for use with either variant of the internet firewall, available as an optional extra.

    introduction

    the officeconnect internet firewall acts as a secure barrier to protect a private lan from hacker attacks from the internet. it can also be used to control the access that lan users have to the internet.

    the officeconnect internet firewall 25 supports up to 25 users on the lan.

    the officeconnect internet firewall dmz supports up to 100 users on the lan. in addition, the officeconnect internet firewall dmz has a demilitarized zone (dmz) port. servers and workstations attached to this port are publicly accessible from the internet, but remain secure from denial-of-service (dos) hacker attacks from the internet. if an internet firewall feature described in this guide applies only to the dmz version, a note tells you this.

    the officeconnect web site filter is an optional extra that can be used with either variant of the internet firewall. you can use it to prevent lan users accessing web sites that fit into categories that are considered inappropriate for business use. the web site filter updates the internet firewall automatically with the latest urls matching selected categories. it is available as a 12-month

    subscription. the internet firewall has a one-month free subscription for the web site filter.

    this guide is intended for use by the person responsible for installing or managing the network. it assumes knowledge of the following:

    1 basic familiarity with ethernet networks and the internet protocol.

    2 knowledge of how to install and handle electronically sensitive equipment.

    if release notes are shipped with your product and the information there differs from the information in this guide, follow the instructions in the release notes.

    most user guides and release notes are available in adobe acrobat reader portable document format (pdf) or html on the 3com world wide web site:

    http://www.3com.com/