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We have approximately 50 workstations, all running Windows Live Messenger.<br />
<br />
In the past couple of weeks, we've been hit by trojans that were not detected by our AV software (Trend Micro).<br />
<br />
Some of these were file transfers <br />
<br />
Is there a way in group policy to control the permissions in the WLM client? &nbsp;For example, turn off file transfers?<br />
<br />
If no, what other recommendations/suggestion<wbr />s do you have on improving the security management of IM? &nbsp;Is Office Communications Server the way to go? &nbsp;Can the personalized WLM client be used with OCS, or is that yet another IM client?<br />
<br />
Thank you!<br />

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We have approximately 50 workstations, all running Windows Live Messenger.

In the past couple of weeks, we've been hit by trojans that were not detected by our AV software (Trend Micro).

Some of these were file transfers 

Is there a way in group policy to control the permissions in the WLM client?  For example, turn off file transfers?

If no, what other recommendations/suggestions do you have on improving the security management of IM?  Is Office Communications Server the way to go?  Can the personalized WLM client be used with OCS, or is that yet another IM client?

Thank you!


How to control security on Windows Live Messenger - recommendations

Microsoft Forefront, formerly known as Internet Security and Acceleration Server (ISA Server), is a network router, firewall, antivirus program, VPN server and web cache that runs on Windows servers. It includes identity management and protection systems, and discontinued systems for threat management and network protection, along with protection for Sharepoint and Exchange. The scope of discussions includes forward and reverse proxy, application and service publishing, virtual private networks (VPNs), outbound access rules, SSL certificates and network routing within either a single node or an highly-available array pairing.