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Blocking IM

I would like to block the most popular IM sites, i.e. yahoo, aol, microsoft, etc.. manualy through IP ranges and ports. Does anyone have a link to quick list with this information or have a better standard rule for a PIX 535 running 6.3(3)? We have other tools but I wanted to create a new rule blocking most of these services going through one of our firewalls.

Thanks

1 REPLY

Re: Blocking IM

hi

I think it will be tedious task if u go on blocking based on the ip address and the port numbers being used by the IMs ,the best way would be with ur external blocking servers such as Websense which proves to be a good option in this case...

regds

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