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Block Windows Live Messenger using IDP
Applicable to Version: 9.4.2 build 0

Requirement
To block Windows Live Messenger using Cyberoam IDP signature

Solution
Cyberoam provides solution to block Windows Live Messenger with the help of default IDP signature.

Prerequisite
Intrusion Detection & Prevention (IDP) module must be subscribed

Editing the IDP Policy

Step 1. Go to IDP > Policy > Manage > lantowan_strict to modify the default lantowan_strict policy.

Step 2. Click the toggle expansion button in category “Cyberoam Signatures” to edit the IDP policy. (Refer to the PDF)

Step 3. Edit CYBEROAM WLM_IM signature. Select the IDP Mode as Drop.

Step 4. Save the change and apply IDP policy through firewall rule based on requirement.


Editing the Firewall Rule

Blanket Block
If the messenger needs to be blocked for all users then Create Firewall rule from Firewall > Create Rule with the following parameters:

Parameters

Value

Source

Zone - LAN
Host - Any Host

Destination

Zone - WAN
Host – Any Host

Services/Service Group

All Services

Apply Schedule

All the Time

Action

Accept

Apply Source NAT

MASQ

IDP Policy

lantowan_strict


User Specific Control
If the messenger needs to be blocked for specific user or group of users then create firewall rule from Firewall > Create Rule with the following parameters:

Parameters

Value

Source

Zone - LAN
Host - Any Host

Check Identity

User Name / Group Name

Destination

Zone - WAN
Host – Any Host

Services/Service Group

All Services

Apply Schedule

All the Time

Action

Accept

Apply Source NAT

MASQ

IDP Policy

lantowan_strict

Document Version 1.0-05/06/2007


Attachments
Article ID: 457