ip range with iptables

["Wijaya, J." <wijayaj () gmx net>]

I am trying to block yahoo messenger for my LAN, but only on certain ip
range, how can i do this? i already read some articles that we can't do
this with iptables, but is there any other way to work around this task??

On more thing, i manage to figured out yahoo messenger servers, instead
blocking each IP address for it, i block the main servers,

scs-fooa.yahoo.com
scs-foob.yahoo.com
scs-fooc.yahoo.com
scs-food.yahoo.com
scs-fooe.yahoo.com
scs-foof.yahoo.com

Maybe some of network administrators are already know this, just to share
things.

thanks in advance

-iYung-

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