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I want to block the "Google Talk" application on a workstation, without uninstalling it.

How do I do that?

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Which Operating System are you using? Each OS has different ways of doing things, including firewall configuration (you'll either be blocking the TCP/UDP/ICMP ports this application uses, or just preventing it specifically from connecting to the internet at all). – Randolf Richardson May 10 '11 at 6:48

you'd have to block the ports or the domain name at your firewall or router - the former could be a pain - you'd need to block ports 5222 and 443 - the later is a standard port used for https so it can be a bit of a pain. Alternately block the domain name using hosts.txt or at your firewall

I have no idea if this will block web access via gmail though.

(yes i know the google link is for unblocking gtalk, but blocking is unblocking in reverse)

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