yahootech asked:


Is it possible to hack a network instead of a computer so that all the data’s transfered thru a sniffer (for example)? I have a secured (WPA-PSK) wireless network with 4 other computers using that wireless netwrok. I have a firewall (ZoneAlarm) on the highest settings (stealth mode) on each computer as well. I use firefox, don’t open any email attachments and am very specific about whose email I choose to open. How else can any hacker intrude? Would it still be possible to install a prog remotely (without a popular trojan perhaps). Wouldn’t I be able to see if some sort of notification if that were to happen? I’m paranoid because I know some people that always end up doing the same things as me because of the activity on my computer (& they’re shameless to copy what I do and then tell me about it instead). I think they are tracking what sites I visit, what I type (including forms on an internet browser, what I view, etc. I’d like expert advice from a network security analyst possibly.
So those open ports vulnerable even with a firewall? Would they be outgoing or incoming ports? and are they UDP or TCP? Because I can list ports I want to block on Zone Alarm. But is it even effective blocking through ZA? What’s the best way to scan and block those ports?
And what are the following ports for (listed in ZA firewall settings)?
-outgoing NetBIOS (ports 135, 137-139, 445)
-incoming ping (ICMP Echo)
-outgoing ping (ICMP Echo)
-other incoming ICMP
-other outgoing ICMP
-incoming IGMP
-outgoing IGMP
-incoming UDP
-outgoing UDP
-incoming TCP
-outgoing TCP

And which ones should I block without completely comprising functionality?

ACELINE