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Implement Content Filtering on IM Applications

Applicable Version: 10.00 onwards

Overview

Cyberoam allows you to configure and manage restrictions on instant messaging services provided by Yahoo and MSN messengers. Web traffic in the form of files and chat is filtered by various rules and content filtering strategies. Using IM Content Filtering, you can block certain keywords through Regular Expressions like Bank Account Number, Passport Number, etc. from appearing in chat conversations. Cyberoam removes the configured keywords and expressions, and displays an error message on the chat window.

Scenario

Configure IM Content Filter to block any Credit Card, Visa and Passport Numbers if they appear on users’ chat conversations.

Configuration

You can configure IM Content Filtering by following the steps given below. Configuration is to be done from Web Admin Console using Administrator profile.

Step 1: Add RegEx to IM Content Filter

Go to IM à Content Filter à Content Filter and specify the RegEx under RegEx List for Content Filter. Here, we have entered ^((4"d{3})|(5[1-5]"d{2})|(6011))-?"d{4}-?"d which represents any Credit Card, Visa or Passport Number.

Step 2: Enable Content Filter in IM Conversation Rule

Go to IM à IM Rules à Conversation and select the default conversation rule ‘conversationrule1’.

Enable Content Filter in conversationrule1 and click OK.

Step 3: Enable IM Scanning in Firewall Rule

Go to Firewall à Rule à Rule and select Default Rule 1: LAN_WAN_AnyTraffic.

Enable IM Scanning in LAN_WAN_AnyTraffic and click OK.

The above configuration enables scanning of chat conversations in Yahoo and MSN messengers. If any user sends a message containing a Credit, Visa or Passport number, the message is blocked by Cyberoam and an error message is displayed on the user’s chat window.

Document Version: 1.0 – 09/08/2012

Attachments
	How To â€“ Implement Content Filtering on IM Applications.pdf

Article ID: 2397