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I'm planning to use my WindowsXP-based pc to connect via GPRS/3G while in roaming. What I want is to check my e-mails & instant messages, which doesn't seem like a lot of traffic. What I want to avoid is other stuff on my PC (like antivirus, browser, etc.) wasting that pricey traffic on updates. Is there a way to configure my PC so only dedicated programs have Internet access?

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This isn't a programming question: stackoverflow.com/faq – marto Jul 25 '11 at 8:50
Just don't run the other applications. Your AV will only updated when there is an update and you should always accept it. – Ramhound Jul 25 '11 at 11:27
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migrated from stackoverflow.com Jul 25 '11 at 9:59

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Use an application which can monitor your network traffic. Usually the modem comes with such an app, but not all the time. "NetLimiter" can monitor / log all the kilobytes.
(Besides that, for example, Opticon modem comes with an old software. However, you can download a new one from the manufacturer's site, and it brings data logging. So yeah..always install the latest.)

(And yes, have an up-to-date antivirus. Also, use "Opera Turbo" or something like that. IF possible.)

(Also, you can check Windows "Performance" tab. It displays every network traffic. You can use "Proccess Explorer" too. Its got a "Show in tray" feature, where you can see the network activity. Useful, since you know that something eats your bandwidth.)

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Thanks for the reply. However, I would like to mention that I don't want to log/monitor connections, but rather prevent all of them unless explicitly authorized. – user42629 Nov 28 '11 at 13:18
@user42629 - You are looking for a firewall. :) – Shiki Nov 28 '11 at 18:04
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