I sometimes teach classes, so I am interested in knowing why you are 
blocking it. What are you concerned about? Also, does the corporate 
security policy or acceptable use policy address it?

Thanks.

Fred

At 02:45 PM 1/24/01 -0500, Andrew Tseng wrote:
>Hi:
>         My company uses Checkpoint FW-1 4.0 running in a NT 4.0 box. Is 
> there any way to block users using AOL messenger ?  I blocked AOL 
> messenger default port:5190 but it swithed to other ports such as 53, 23 
> or 25 which have to be opened. Also, connections of AOL logon host 
> "login.oscar.aol.com" and AOL Netblock "64.12.149.0",  "152.163.180.0" 
> are disallowed.  However, I still see users happy using AOL messenger 
> which really discourage me. Could anyone give me some ideas how to block 
> AOL Msgr? Should I block AOL Msgr by port or address basis or I have to 
> buy third-party SW like WebSense or SurfControl? Any comments will be 
> appreciated.
>
>
>Andrew Tseng
>
>Ikegami Electronics USA
>37 Brook Ave
>Maywood, NJ07607
>
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