Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I want download updates for Windows XP. Until all updates have been downloaded, my computer will be more exposed to hackers. How can I block all internet connections except those to/from the Microsoft Update website?

Also, what else should I do to prevent hackers from accessing my PC while updates are being downloaded and installed (there's a lot of them after a clean installation).

share|improve this question
up vote 3 down vote accepted

The simplest way to address this is to enable the windows firewall or put yourself behind a NAT router. This will disable incoming connections. If your computer is exposed to hackers via outgoing connections, updating windows will not resolve the issue. Otherwise, a firewall will correct the issue permanently with or without updates.

share|improve this answer
its first instalation - pc clean after disk format – Yosef Oct 6 '12 at 19:55
Ok, so again, a firewall will work. – Ben West Oct 6 '12 at 19:57
but if windows luck important updates hacker can access the PC right? – Yosef Oct 6 '12 at 20:23
I'm sorry I don't understand the question. If your computer is behind a firewall, particularly a router or other hardware device, a hacker should be unable to connect, let-alone breach; I recommend not browsing the internet, however, until fully patched. No security-measures or firewall can prevent access when initiated by you, even if accidentally or unintentionally. – Ben West Oct 6 '12 at 20:40

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.