No, wireless networks tend to be slower than wired networks but they offer more range and you don't need a whole lot of wires. Wireless routers normally have Ethernet ports so you can have a mix of...
You can seucre you LAN by implementing the hardware base firewalls as well as implement the security policies in the system as well as enable the firewall of the router.Use up to date antivirus...
If the problem is neighbors or anyone else surrounding you leeching off your internet service then you might want to think about setting a password for your network. I'm not sure what type of...