Blocking IM

Helllo, I have a small netowrk (10 server, & 60 desktops) that I want
to block IM completely thoughout the network.

What is the easist, least expensive way to block IM that is centralized
(not needing to install something on each PC.

I have turned off the specific IM ports, so I am assuming IM is using
port 80 for access inside my network. I cannot turn off port 80.

Thanks for any help
Gerald

quoted from http://www.howtonetworking.com/others/imports.htm


Instant Messaging Ports
a.. AOL port 5190
b.. ICQ port 4000
c.. IRC port 6667
d.. MSN port 569 or 1863
e.. Yahoo port 5050



Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"gerald" <(E-Mail Removed)> wrote in message news:(E-Mail Removed) oups.com...
Helllo, I have a small netowrk (10 server, & 60 desktops) that I want
to block IM completely thoughout the network.

What is the easist, least expensive way to block IM that is centralized
(not needing to install something on each PC.

I have turned off the specific IM ports, so I am assuming IM is using
port 80 for access inside my network. I cannot turn off port 80.

Thanks for any help
Gerald

This is a never ending battle as these ports change and you also have to deal with port 80. The cheapest way is user education. If you get caught using IM, you will be disciplined! Other than that, you will need a solution such as SurfControl, which will cost some money.

--
David Bermingham, MCSE, MCSA:Messaging
Senior Windows System Engineer
SteelEye Technology, HA and DR for Windows and Linux
www.steeleye.com
"Robert L [MS-MVP]" <(E-Mail Removed)> wrote in message news:%23nyiDt$(E-Mail Removed)...
quoted from http://www.howtonetworking.com/others/imports.htm


Instant Messaging Ports
a.. AOL port 5190
b.. ICQ port 4000
c.. IRC port 6667
d.. MSN port 569 or 1863
e.. Yahoo port 5050



Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"gerald" <(E-Mail Removed)> wrote in message news:(E-Mail Removed) oups.com...
Helllo, I have a small netowrk (10 server, & 60 desktops) that I want
to block IM completely thoughout the network.

What is the easist, least expensive way to block IM that is centralized
(not needing to install something on each PC.

I have turned off the specific IM ports, so I am assuming IM is using
port 80 for access inside my network. I cannot turn off port 80.

Thanks for any help
Gerald

If you are in a domain environment you could block users from running
IM executables via group policy.