- Make sure the firewall on your router is configured correctly.
- Keep the firmware of your router up-to-date.
- Avoid working as an administrator whenever you can.
- Avoid Internet Explorer and Outlook/Outlook Express like the plague. Use Mozilla, Opera, Firefox/Thunderbird or some other software instead.
- Keep your operating system and all software on it (especially web browser, mail client and such) up-to-date, preferrably with automatic updates.
- Update your antivirus software on a daily basis, so you always have the most recent signature data.
- Disable UPnP on your systems.
If you have Windows XP running on your laptop: stick with the Windows Firewall.
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