ai wrote:No, I never install or download any windows updates as THEY cause more trouble than help you. I only have bad experiences with those and honestly I can't imagine why people actually install and trust them. I hate them more than anything else (yes even more than goths and emos).
Well, sorry, but that is asking for trouble. If you tolerate security holes in your system libraries your firewall software (sitting atop those libraries) won't save you.
Instead of closing the gaps in the hull of your ship you're installing faster water pumps. While this is *some* sort of security concept it won't keep you afloat forever. Now, you're mentioning that all of sudden your networking behaves different. One possibility is that you're already sinking.
Notice that most attacks nowadays won't work by means of "unasked connections" to your system (something a firewall can block) but by e.g. "drive-by downloads" - something firewalls *won't* block as your computer did initiate those connections. And why do drive-by downloads work? Because e.g. some faulty image decoders, HTML renderers or script interpreters (this list is incomplete) go titsup when seeing slightly malformed input and will execute injected code. Nope, zero protection from a firewall. Your only hope is that updates will fix those faulty system components or that your malware scanner will detect and stop the nastyness in time (and often this doesn't work very good either).
If you don't trust Microsoft (nothing wrong with that) you shouldn't run Windows. Period. Turning down the only viable offer of getting rid of known security holes in Windows is not an option. One needs to get rid of the entry points for malware. Firewalls are one *additional* line of defense, as are virus scanners.