On your ZA try going to the firewall section and go to advanced, try checking enable ARP protection, Allow uncommon protocols at High Security, and the one on top of the second one. If your on a network, check the enable gateway protection.
The least security someone could have is an anti-virus because thats where some hacks first occur, with the victims computer infected. Id get your computer scanned at Trend Micro and get an Anti Virus. I barely noticed the fact of the netstat results you put. Id get a DNS form of IP if you have broadband. Be careful when you post next time.